./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.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_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/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_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/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_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/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 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 --- 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 11:23:39,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:39,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:39,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:39,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:39,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:39,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:39,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:39,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:39,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:39,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:39,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:39,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:39,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:39,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:39,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:39,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:39,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:39,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:39,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:39,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:39,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:39,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:39,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:39,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:39,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:39,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:39,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:39,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:39,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:39,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:39,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:39,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:39,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:39,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:39,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:39,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:39,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:39,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:39,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:39,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:39,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:23:39,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:39,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:39,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:39,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:39,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:23:39,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:23:39,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:39,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:39,406 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:39,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:39,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:23:39,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:23:39,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:39,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:23:39,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:39,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:23:39,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:23:39,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:23:39,409 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:23:39,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:23:39,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:39,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:39,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:23:39,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:39,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:39,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:23:39,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:39,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:39,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:23:39,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:23:39,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:39,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:23:39,414 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:23:39,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:23:39,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:23:39,415 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_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 [2022-11-16 11:23:39,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:39,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:39,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:39,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:39,841 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:39,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-11-16 11:23:39,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/data/58c976220/36daaa784794495cb06575db76f88fba/FLAG957bcc2f8 [2022-11-16 11:23:40,673 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:40,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-11-16 11:23:40,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/data/58c976220/36daaa784794495cb06575db76f88fba/FLAG957bcc2f8 [2022-11-16 11:23:40,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/data/58c976220/36daaa784794495cb06575db76f88fba [2022-11-16 11:23:40,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:23:40,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:23:40,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:40,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:23:40,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:23:40,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:40" (1/1) ... [2022-11-16 11:23:40,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341fcf55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:40, skipping insertion in model container [2022-11-16 11:23:40,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:40" (1/1) ... [2022-11-16 11:23:40,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:23:40,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:23:41,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:41,663 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:23:41,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:41,792 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:23:41,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41 WrapperNode [2022-11-16 11:23:41,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:41,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:41,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:23:41,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:23:41,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,842 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-16 11:23:41,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:41,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:23:41,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:23:41,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:23:41,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:23:41,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:23:41,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:23:41,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:23:41,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (1/1) ... [2022-11-16 11:23:41,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:41,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:23:41,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:23:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:23:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:23:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:23:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:23:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:23:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:23:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:23:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:23:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:23:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:23:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:23:41,996 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 11:23:42,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:23:42,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:23:42,554 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:23:42,566 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:23:42,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:23:42,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:42 BoogieIcfgContainer [2022-11-16 11:23:42,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:23:42,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:23:42,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:23:42,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:23:42,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:23:40" (1/3) ... [2022-11-16 11:23:42,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff2f656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:42, skipping insertion in model container [2022-11-16 11:23:42,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:41" (2/3) ... [2022-11-16 11:23:42,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff2f656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:23:42, skipping insertion in model container [2022-11-16 11:23:42,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:42" (3/3) ... [2022-11-16 11:23:42,582 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2022-11-16 11:23:42,594 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:23:42,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:23:42,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 11:23:42,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:23:42,718 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:23:42,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 144 flow [2022-11-16 11:23:42,818 INFO L130 PetriNetUnfolder]: 0/67 cut-off events. [2022-11-16 11:23:42,819 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:23:42,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 0/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-11-16 11:23:42,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 144 flow [2022-11-16 11:23:42,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 121 flow [2022-11-16 11:23:42,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:23:42,847 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;@5cd3997, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:23:42,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 11:23:42,864 INFO L130 PetriNetUnfolder]: 0/42 cut-off events. [2022-11-16 11:23:42,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:23:42,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:42,865 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] [2022-11-16 11:23:42,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1793118973, now seen corresponding path program 1 times [2022-11-16 11:23:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008490205] [2022-11-16 11:23:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:42,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:43,752 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 11:23:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008490205] [2022-11-16 11:23:43,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008490205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:43,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:43,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:23:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206328278] [2022-11-16 11:23:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:43,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:23:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:23:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:23:43,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 68 [2022-11-16 11:23:43,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 11:23:43,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:43,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 68 [2022-11-16 11:23:43,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:44,192 INFO L130 PetriNetUnfolder]: 24/131 cut-off events. [2022-11-16 11:23:44,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:23:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 131 events. 24/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 403 event pairs, 6 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 162. Up to 34 conditions per place. [2022-11-16 11:23:44,196 INFO L137 encePairwiseOnDemand]: 57/68 looper letters, 21 selfloop transitions, 10 changer transitions 10/77 dead transitions. [2022-11-16 11:23:44,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 239 flow [2022-11-16 11:23:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:23:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:23:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2022-11-16 11:23:44,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2022-11-16 11:23:44,223 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 423 transitions. [2022-11-16 11:23:44,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 423 transitions. [2022-11-16 11:23:44,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:44,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 423 transitions. [2022-11-16 11:23:44,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 11:23:44,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 11:23:44,243 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 11:23:44,245 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 121 flow. Second operand 9 states and 423 transitions. [2022-11-16 11:23:44,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 239 flow [2022-11-16 11:23:44,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:23:44,253 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 168 flow [2022-11-16 11:23:44,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2022-11-16 11:23:44,260 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-11-16 11:23:44,263 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 168 flow [2022-11-16 11:23:44,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 11:23:44,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:44,265 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] [2022-11-16 11:23:44,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:23:44,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1199429774, now seen corresponding path program 1 times [2022-11-16 11:23:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:44,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046704141] [2022-11-16 11:23:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:44,610 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 11:23:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046704141] [2022-11-16 11:23:44,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046704141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:44,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:44,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:23:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582737433] [2022-11-16 11:23:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:23:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:23:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:23:44,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 68 [2022-11-16 11:23:44,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 43.75) internal successors, (350), 8 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 11:23:44,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:44,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 68 [2022-11-16 11:23:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:44,792 INFO L130 PetriNetUnfolder]: 13/106 cut-off events. [2022-11-16 11:23:44,792 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-16 11:23:44,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 106 events. 13/106 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 273 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 162. Up to 17 conditions per place. [2022-11-16 11:23:44,794 INFO L137 encePairwiseOnDemand]: 58/68 looper letters, 22 selfloop transitions, 9 changer transitions 5/72 dead transitions. [2022-11-16 11:23:44,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 276 flow [2022-11-16 11:23:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:23:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 375 transitions. [2022-11-16 11:23:44,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6893382352941176 [2022-11-16 11:23:44,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 375 transitions. [2022-11-16 11:23:44,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 375 transitions. [2022-11-16 11:23:44,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:44,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 375 transitions. [2022-11-16 11:23:44,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.875) internal successors, (375), 8 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 11:23:44,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:44,801 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:44,801 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 168 flow. Second operand 8 states and 375 transitions. [2022-11-16 11:23:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 276 flow [2022-11-16 11:23:44,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 256 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:44,805 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 189 flow [2022-11-16 11:23:44,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2022-11-16 11:23:44,806 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2022-11-16 11:23:44,807 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 189 flow [2022-11-16 11:23:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.75) internal successors, (350), 8 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 11:23:44,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:44,808 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] [2022-11-16 11:23:44,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:23:44,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash -671775591, now seen corresponding path program 1 times [2022-11-16 11:23:44,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:44,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325658936] [2022-11-16 11:23:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:44,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:44,915 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 11:23:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:44,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325658936] [2022-11-16 11:23:44,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325658936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:44,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:44,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:44,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749128283] [2022-11-16 11:23:44,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:44,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:23:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:44,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 68 [2022-11-16 11:23:44,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 11:23:44,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:44,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 68 [2022-11-16 11:23:44,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:44,989 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-16 11:23:44,989 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 11:23:44,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 74 events. 1/74 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2022-11-16 11:23:44,992 INFO L137 encePairwiseOnDemand]: 64/68 looper letters, 7 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2022-11-16 11:23:44,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 63 transitions, 211 flow [2022-11-16 11:23:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:23:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2022-11-16 11:23:44,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872549019607843 [2022-11-16 11:23:44,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2022-11-16 11:23:44,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2022-11-16 11:23:44,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:44,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2022-11-16 11:23:44,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 11:23:45,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 11:23:45,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 11:23:45,001 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 189 flow. Second operand 3 states and 181 transitions. [2022-11-16 11:23:45,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 63 transitions, 211 flow [2022-11-16 11:23:45,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 192 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:45,020 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 178 flow [2022-11-16 11:23:45,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2022-11-16 11:23:45,021 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-11-16 11:23:45,022 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 178 flow [2022-11-16 11:23:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 11:23:45,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:45,022 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] [2022-11-16 11:23:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:23:45,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 661488455, now seen corresponding path program 1 times [2022-11-16 11:23:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:45,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534599157] [2022-11-16 11:23:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:45,593 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 11:23:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:45,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534599157] [2022-11-16 11:23:45,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534599157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:45,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:45,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:23:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635545279] [2022-11-16 11:23:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:45,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:23:45,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:45,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:23:45,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:23:45,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-11-16 11:23:45,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:45,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:45,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-11-16 11:23:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:46,140 INFO L130 PetriNetUnfolder]: 14/114 cut-off events. [2022-11-16 11:23:46,141 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-16 11:23:46,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 114 events. 14/114 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 5 based on Foata normal form. 2/115 useless extension candidates. Maximal degree in co-relation 191. Up to 25 conditions per place. [2022-11-16 11:23:46,142 INFO L137 encePairwiseOnDemand]: 55/68 looper letters, 30 selfloop transitions, 21 changer transitions 3/85 dead transitions. [2022-11-16 11:23:46,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 348 flow [2022-11-16 11:23:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:23:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:23:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 721 transitions. [2022-11-16 11:23:46,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5890522875816994 [2022-11-16 11:23:46,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 721 transitions. [2022-11-16 11:23:46,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 721 transitions. [2022-11-16 11:23:46,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:46,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 721 transitions. [2022-11-16 11:23:46,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 40.05555555555556) internal successors, (721), 18 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 11:23:46,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states 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 11:23:46,152 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states 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 11:23:46,152 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 178 flow. Second operand 18 states and 721 transitions. [2022-11-16 11:23:46,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 348 flow [2022-11-16 11:23:46,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:23:46,156 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 273 flow [2022-11-16 11:23:46,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=273, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2022-11-16 11:23:46,157 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2022-11-16 11:23:46,157 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 273 flow [2022-11-16 11:23:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:46,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:46,158 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] [2022-11-16 11:23:46,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:23:46,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash 642580756, now seen corresponding path program 1 times [2022-11-16 11:23:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:46,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995403716] [2022-11-16 11:23:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:46,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:46,527 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 11:23:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:46,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995403716] [2022-11-16 11:23:46,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995403716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:46,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:46,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:23:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697103651] [2022-11-16 11:23:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:23:46,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:23:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:23:46,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-11-16 11:23:46,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 273 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:46,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:46,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-11-16 11:23:46,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:46,938 INFO L130 PetriNetUnfolder]: 14/113 cut-off events. [2022-11-16 11:23:46,938 INFO L131 PetriNetUnfolder]: For 89/91 co-relation queries the response was YES. [2022-11-16 11:23:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 113 events. 14/113 cut-off events. For 89/91 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 10 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 226. Up to 37 conditions per place. [2022-11-16 11:23:46,940 INFO L137 encePairwiseOnDemand]: 56/68 looper letters, 25 selfloop transitions, 19 changer transitions 2/77 dead transitions. [2022-11-16 11:23:46,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 77 transitions, 373 flow [2022-11-16 11:23:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:23:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:23:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 559 transitions. [2022-11-16 11:23:46,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5871848739495799 [2022-11-16 11:23:46,943 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 559 transitions. [2022-11-16 11:23:46,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 559 transitions. [2022-11-16 11:23:46,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:46,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 559 transitions. [2022-11-16 11:23:46,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.92857142857143) internal successors, (559), 14 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 11:23:46,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 68.0) internal successors, (1020), 15 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:23:46,951 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 68.0) internal successors, (1020), 15 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states 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 11:23:46,951 INFO L175 Difference]: Start difference. First operand has 94 places, 72 transitions, 273 flow. Second operand 14 states and 559 transitions. [2022-11-16 11:23:46,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 77 transitions, 373 flow [2022-11-16 11:23:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 77 transitions, 334 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-16 11:23:46,960 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 268 flow [2022-11-16 11:23:46,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2022-11-16 11:23:46,963 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2022-11-16 11:23:46,963 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 268 flow [2022-11-16 11:23:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:46,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:46,965 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] [2022-11-16 11:23:46,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:23:46,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1501265001, now seen corresponding path program 2 times [2022-11-16 11:23:46,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:46,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861800352] [2022-11-16 11:23:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:47,307 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 11:23:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:47,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861800352] [2022-11-16 11:23:47,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861800352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:47,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:47,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:23:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274148026] [2022-11-16 11:23:47,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:23:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:23:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:23:47,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 68 [2022-11-16 11:23:47,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:47,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:47,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 68 [2022-11-16 11:23:47,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:47,683 INFO L130 PetriNetUnfolder]: 13/109 cut-off events. [2022-11-16 11:23:47,684 INFO L131 PetriNetUnfolder]: For 76/78 co-relation queries the response was YES. [2022-11-16 11:23:47,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 109 events. 13/109 cut-off events. For 76/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 229. Up to 24 conditions per place. [2022-11-16 11:23:47,686 INFO L137 encePairwiseOnDemand]: 56/68 looper letters, 23 selfloop transitions, 22 changer transitions 2/78 dead transitions. [2022-11-16 11:23:47,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 78 transitions, 372 flow [2022-11-16 11:23:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:23:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:23:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 635 transitions. [2022-11-16 11:23:47,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5836397058823529 [2022-11-16 11:23:47,691 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 635 transitions. [2022-11-16 11:23:47,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 635 transitions. [2022-11-16 11:23:47,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:47,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 635 transitions. [2022-11-16 11:23:47,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 39.6875) internal successors, (635), 16 states have internal predecessors, (635), 0 states have call successors, (0), 0 states 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 11:23:47,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 68.0) internal successors, (1156), 17 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states 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 11:23:47,700 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 68.0) internal successors, (1156), 17 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states 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 11:23:47,700 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 268 flow. Second operand 16 states and 635 transitions. [2022-11-16 11:23:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 78 transitions, 372 flow [2022-11-16 11:23:47,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 78 transitions, 328 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-11-16 11:23:47,706 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 262 flow [2022-11-16 11:23:47,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=262, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2022-11-16 11:23:47,710 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2022-11-16 11:23:47,711 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 262 flow [2022-11-16 11:23:47,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 11:23:47,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:47,712 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] [2022-11-16 11:23:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:23:47,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 174449957, now seen corresponding path program 1 times [2022-11-16 11:23:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327545082] [2022-11-16 11:23:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:47,934 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 11:23:47,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:47,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327545082] [2022-11-16 11:23:47,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327545082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:47,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:47,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880202289] [2022-11-16 11:23:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:47,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-11-16 11:23:47,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:47,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:47,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-11-16 11:23:47,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:48,100 INFO L130 PetriNetUnfolder]: 15/124 cut-off events. [2022-11-16 11:23:48,100 INFO L131 PetriNetUnfolder]: For 87/89 co-relation queries the response was YES. [2022-11-16 11:23:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 124 events. 15/124 cut-off events. For 87/89 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 8 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 256. Up to 47 conditions per place. [2022-11-16 11:23:48,104 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 32 selfloop transitions, 4 changer transitions 11/80 dead transitions. [2022-11-16 11:23:48,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 80 transitions, 390 flow [2022-11-16 11:23:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 325 transitions. [2022-11-16 11:23:48,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6827731092436975 [2022-11-16 11:23:48,108 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 325 transitions. [2022-11-16 11:23:48,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 325 transitions. [2022-11-16 11:23:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:48,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 325 transitions. [2022-11-16 11:23:48,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 11:23:48,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:23:48,112 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:23:48,112 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 262 flow. Second operand 7 states and 325 transitions. [2022-11-16 11:23:48,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 80 transitions, 390 flow [2022-11-16 11:23:48,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 334 flow, removed 3 selfloop flow, removed 15 redundant places. [2022-11-16 11:23:48,119 INFO L231 Difference]: Finished difference. Result has 93 places, 67 transitions, 218 flow [2022-11-16 11:23:48,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2022-11-16 11:23:48,120 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 30 predicate places. [2022-11-16 11:23:48,121 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 218 flow [2022-11-16 11:23:48,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:48,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:48,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:23:48,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 834880321, now seen corresponding path program 1 times [2022-11-16 11:23:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476633218] [2022-11-16 11:23:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:48,321 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 11:23:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:48,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476633218] [2022-11-16 11:23:48,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476633218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:48,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:48,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:48,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776356497] [2022-11-16 11:23:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:48,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:48,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-11-16 11:23:48,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:48,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-11-16 11:23:48,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:48,461 INFO L130 PetriNetUnfolder]: 11/102 cut-off events. [2022-11-16 11:23:48,461 INFO L131 PetriNetUnfolder]: For 68/69 co-relation queries the response was YES. [2022-11-16 11:23:48,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 102 events. 11/102 cut-off events. For 68/69 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 3 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 209. Up to 33 conditions per place. [2022-11-16 11:23:48,462 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 23 selfloop transitions, 5 changer transitions 12/70 dead transitions. [2022-11-16 11:23:48,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 70 transitions, 296 flow [2022-11-16 11:23:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:23:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 359 transitions. [2022-11-16 11:23:48,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6599264705882353 [2022-11-16 11:23:48,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 359 transitions. [2022-11-16 11:23:48,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 359 transitions. [2022-11-16 11:23:48,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:48,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 359 transitions. [2022-11-16 11:23:48,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 11:23:48,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:48,470 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:48,470 INFO L175 Difference]: Start difference. First operand has 93 places, 67 transitions, 218 flow. Second operand 8 states and 359 transitions. [2022-11-16 11:23:48,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 70 transitions, 296 flow [2022-11-16 11:23:48,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 70 transitions, 281 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-16 11:23:48,474 INFO L231 Difference]: Finished difference. Result has 87 places, 57 transitions, 176 flow [2022-11-16 11:23:48,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=176, PETRI_PLACES=87, PETRI_TRANSITIONS=57} [2022-11-16 11:23:48,477 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2022-11-16 11:23:48,478 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 57 transitions, 176 flow [2022-11-16 11:23:48,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:48,479 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] [2022-11-16 11:23:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:23:48,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash -968694201, now seen corresponding path program 2 times [2022-11-16 11:23:48,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:48,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44020648] [2022-11-16 11:23:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:48,685 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 11:23:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:48,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44020648] [2022-11-16 11:23:48,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44020648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:48,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:48,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833206081] [2022-11-16 11:23:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:48,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:48,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:48,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-11-16 11:23:48,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 57 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:48,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-11-16 11:23:48,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:48,769 INFO L130 PetriNetUnfolder]: 8/77 cut-off events. [2022-11-16 11:23:48,769 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 11:23:48,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 77 events. 8/77 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 4 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 168. Up to 31 conditions per place. [2022-11-16 11:23:48,770 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 18 selfloop transitions, 4 changer transitions 8/60 dead transitions. [2022-11-16 11:23:48,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 244 flow [2022-11-16 11:23:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:23:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2022-11-16 11:23:48,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2022-11-16 11:23:48,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 316 transitions. [2022-11-16 11:23:48,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 316 transitions. [2022-11-16 11:23:48,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:48,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 316 transitions. [2022-11-16 11:23:48,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 11:23:48,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:23:48,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:23:48,775 INFO L175 Difference]: Start difference. First operand has 87 places, 57 transitions, 176 flow. Second operand 7 states and 316 transitions. [2022-11-16 11:23:48,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 244 flow [2022-11-16 11:23:48,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:23:48,778 INFO L231 Difference]: Finished difference. Result has 74 places, 52 transitions, 139 flow [2022-11-16 11:23:48,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=74, PETRI_TRANSITIONS=52} [2022-11-16 11:23:48,779 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-11-16 11:23:48,779 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 52 transitions, 139 flow [2022-11-16 11:23:48,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:23:48,780 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] [2022-11-16 11:23:48,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:23:48,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:23:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1866174043, now seen corresponding path program 3 times [2022-11-16 11:23:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:48,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903515621] [2022-11-16 11:23:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:48,922 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 11:23:48,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903515621] [2022-11-16 11:23:48,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903515621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:48,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:48,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:23:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088896349] [2022-11-16 11:23:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:48,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 68 [2022-11-16 11:23:48,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 52 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:48,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:23:48,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 68 [2022-11-16 11:23:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:23:49,044 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-16 11:23:49,044 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-16 11:23:49,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 59 events. 4/59 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2022-11-16 11:23:49,045 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-11-16 11:23:49,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 53 transitions, 186 flow [2022-11-16 11:23:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:23:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:23:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 352 transitions. [2022-11-16 11:23:49,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2022-11-16 11:23:49,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 352 transitions. [2022-11-16 11:23:49,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 352 transitions. [2022-11-16 11:23:49,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:49,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 352 transitions. [2022-11-16 11:23:49,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 11:23:49,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:49,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 11:23:49,053 INFO L175 Difference]: Start difference. First operand has 74 places, 52 transitions, 139 flow. Second operand 8 states and 352 transitions. [2022-11-16 11:23:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 53 transitions, 186 flow [2022-11-16 11:23:49,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 166 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-16 11:23:49,055 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2022-11-16 11:23:49,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2022-11-16 11:23:49,056 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-11-16 11:23:49,057 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2022-11-16 11:23:49,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 11:23:49,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-11-16 11:23:49,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-11-16 11:23:49,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-16 11:23:49,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-11-16 11:23:49,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-11-16 11:23:49,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-11-16 11:23:49,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-11-16 11:23:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:23:49,064 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2022-11-16 11:23:49,070 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:23:49,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:23:49,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:23:49 BasicIcfg [2022-11-16 11:23:49,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:23:49,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:23:49,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:23:49,078 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:23:49,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:42" (3/4) ... [2022-11-16 11:23:49,082 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:23:49,090 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-16 11:23:49,095 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-16 11:23:49,095 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:23:49,095 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:23:49,138 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:23:49,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:23:49,139 INFO L158 Benchmark]: Toolchain (without parser) took 8234.01ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 97.6MB in the beginning and 65.6MB in the end (delta: 31.9MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,139 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:49,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 884.59ms. Allocated memory is still 136.3MB. Free memory was 97.4MB in the beginning and 93.6MB in the end (delta: 3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.44ms. Allocated memory is still 136.3MB. Free memory was 93.6MB in the beginning and 91.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,140 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,140 INFO L158 Benchmark]: RCFGBuilder took 693.14ms. Allocated memory is still 136.3MB. Free memory was 89.9MB in the beginning and 76.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,141 INFO L158 Benchmark]: TraceAbstraction took 6505.14ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 76.5MB in the beginning and 67.7MB in the end (delta: 8.8MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,142 INFO L158 Benchmark]: Witness Printer took 60.33ms. Allocated memory is still 163.6MB. Free memory was 67.7MB in the beginning and 65.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:23:49,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 884.59ms. Allocated memory is still 136.3MB. Free memory was 97.4MB in the beginning and 93.6MB in the end (delta: 3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.44ms. Allocated memory is still 136.3MB. Free memory was 93.6MB in the beginning and 91.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 693.14ms. Allocated memory is still 136.3MB. Free memory was 89.9MB in the beginning and 76.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6505.14ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 76.5MB in the beginning and 67.7MB in the end (delta: 8.8MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Witness Printer took 60.33ms. Allocated memory is still 163.6MB. Free memory was 67.7MB in the beginning and 65.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 923]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 599 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 599 mSDsluCounter, 399 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 824 IncrementalHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 117 mSDtfsCounter, 824 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=4, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 462 NumberOfCodeBlocks, 462 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 452 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:23:49,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d166a5b2-46d7-49bf-bb7a-2331fb0cb957/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE