./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/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_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/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_3b963155-ab59-4f73-aa0e-303c17b7a6f0/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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- 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 11:57:49,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:57:49,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:57:49,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:57:49,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:57:49,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:57:49,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:57:49,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:57:49,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:57:49,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:57:49,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:57:49,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:57:49,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:57:49,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:57:49,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:57:49,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:57:49,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:57:49,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:57:49,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:57:49,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:57:49,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:57:49,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:57:49,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:57:49,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:57:49,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:57:49,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:57:49,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:57:49,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:57:49,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:57:49,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:57:49,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:57:49,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:57:49,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:57:49,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:57:49,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:57:49,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:57:49,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:57:49,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:57:49,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:57:49,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:57:49,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:57:49,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:57:49,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:57:49,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:57:49,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:57:49,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:57:49,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:57:49,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:57:49,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:57:49,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:57:49,430 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:57:49,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:57:49,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:57:49,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:57:49,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:57:49,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:57:49,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:57:49,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:57:49,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:57:49,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:57:49,433 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:57:49,434 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:57:49,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:57:49,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:57:49,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:57:49,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:57:49,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:57:49,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:57:49,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:49,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:57:49,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:57:49,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:57:49,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:57:49,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:57:49,439 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:57:49,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:57:49,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:57:49,439 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_3b963155-ab59-4f73-aa0e-303c17b7a6f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2022-11-16 11:57:49,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:57:49,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:57:49,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:57:49,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:57:49,782 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:57:49,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-16 11:57:49,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/data/2397d9dfa/16addb6531d14b8faad0de4439121786/FLAG811737371 [2022-11-16 11:57:50,420 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:57:50,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2022-11-16 11:57:50,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/data/2397d9dfa/16addb6531d14b8faad0de4439121786/FLAG811737371 [2022-11-16 11:57:50,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/data/2397d9dfa/16addb6531d14b8faad0de4439121786 [2022-11-16 11:57:50,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:57:50,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:57:50,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:50,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:57:50,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:57:50,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:50" (1/1) ... [2022-11-16 11:57:50,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c820a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:50, skipping insertion in model container [2022-11-16 11:57:50,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:50" (1/1) ... [2022-11-16 11:57:50,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:57:50,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:57:51,431 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-16 11:57:51,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:51,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:51,517 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2022-11-16 11:57:51,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:51,580 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:51,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51 WrapperNode [2022-11-16 11:57:51,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:51,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:51,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:51,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:51,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,656 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2022-11-16 11:57:51,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:51,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:51,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:51,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:51,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:51,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:51,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:51,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:51,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ... [2022-11-16 11:57:51,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:51,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:51,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:51,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:51,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:57:51,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:57:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:57:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:57:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:57:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:57:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:57:51,803 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:57:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:57:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:51,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:51,805 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 11:57:51,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:51,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:52,332 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:52,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:52,342 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 11:57:52,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:52 BoogieIcfgContainer [2022-11-16 11:57:52,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:52,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:57:52,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:57:52,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:57:52,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:57:50" (1/3) ... [2022-11-16 11:57:52,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e0276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:52, skipping insertion in model container [2022-11-16 11:57:52,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (2/3) ... [2022-11-16 11:57:52,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e0276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:52, skipping insertion in model container [2022-11-16 11:57:52,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:52" (3/3) ... [2022-11-16 11:57:52,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2022-11-16 11:57:52,375 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:57:52,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:57:52,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:57:52,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:57:52,485 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:57:52,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 143 transitions, 294 flow [2022-11-16 11:57:52,656 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-16 11:57:52,657 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:57:52,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-11-16 11:57:52,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 143 transitions, 294 flow [2022-11-16 11:57:52,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 288 flow [2022-11-16 11:57:52,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:52,717 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;@4b20b1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:52,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 11:57:52,742 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-16 11:57:52,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:52,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:52,743 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 11:57:52,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:57:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 671998209, now seen corresponding path program 1 times [2022-11-16 11:57:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920903625] [2022-11-16 11:57:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:53,306 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 11:57:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920903625] [2022-11-16 11:57:53,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920903625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:53,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:53,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846246863] [2022-11-16 11:57:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:53,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 143 [2022-11-16 11:57:53,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 140 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 11:57:53,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:53,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 143 [2022-11-16 11:57:53,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:53,477 INFO L130 PetriNetUnfolder]: 0/130 cut-off events. [2022-11-16 11:57:53,478 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-16 11:57:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 130 events. 0/130 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 31/153 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 11:57:53,480 INFO L137 encePairwiseOnDemand]: 125/143 looper letters, 10 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2022-11-16 11:57:53,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 128 transitions, 292 flow [2022-11-16 11:57:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2022-11-16 11:57:53,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8839160839160839 [2022-11-16 11:57:53,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2022-11-16 11:57:53,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2022-11-16 11:57:53,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:53,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2022-11-16 11:57:53,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 11:57:53,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 11:57:53,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 11:57:53,540 INFO L175 Difference]: Start difference. First operand has 132 places, 140 transitions, 288 flow. Second operand 5 states and 632 transitions. [2022-11-16 11:57:53,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 128 transitions, 292 flow [2022-11-16 11:57:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:53,549 INFO L231 Difference]: Finished difference. Result has 134 places, 126 transitions, 272 flow [2022-11-16 11:57:53,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-11-16 11:57:53,555 INFO L288 CegarLoopForPetriNet]: 132 programPoint places, 2 predicate places. [2022-11-16 11:57:53,556 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 272 flow [2022-11-16 11:57:53,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 11:57:53,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:53,559 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:53,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:57:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 444992190, now seen corresponding path program 1 times [2022-11-16 11:57:53,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:53,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522664650] [2022-11-16 11:57:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:53,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:53,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:53,735 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:53,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 11:57:53,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 11:57:53,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 11:57:53,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 11:57:53,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 11:57:53,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 11:57:53,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 11:57:53,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 11:57:53,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 11:57:53,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 11:57:53,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 11:57:53,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 11:57:53,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 11:57:53,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:57:53,759 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:57:53,764 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:53,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:57:53,850 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:57:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 192 transitions, 402 flow [2022-11-16 11:57:53,947 INFO L130 PetriNetUnfolder]: 31/307 cut-off events. [2022-11-16 11:57:53,948 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:57:53,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 31/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 956 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-16 11:57:53,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 192 transitions, 402 flow [2022-11-16 11:57:53,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 192 transitions, 402 flow [2022-11-16 11:57:53,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:53,969 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;@4b20b1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:53,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:57:53,980 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-16 11:57:53,984 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:53,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:53,985 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 11:57:53,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:57:53,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1273472592, now seen corresponding path program 1 times [2022-11-16 11:57:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:53,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779343417] [2022-11-16 11:57:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:54,140 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 11:57:54,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779343417] [2022-11-16 11:57:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779343417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:54,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:54,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051360756] [2022-11-16 11:57:54,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:54,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-16 11:57:54,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 192 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 11:57:54,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:54,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-16 11:57:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:54,300 INFO L130 PetriNetUnfolder]: 2/254 cut-off events. [2022-11-16 11:57:54,301 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-16 11:57:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 254 events. 2/254 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 600 event pairs, 0 based on Foata normal form. 77/307 useless extension candidates. Maximal degree in co-relation 160. Up to 21 conditions per place. [2022-11-16 11:57:54,305 INFO L137 encePairwiseOnDemand]: 168/192 looper letters, 19 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-16 11:57:54,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 181 transitions, 426 flow [2022-11-16 11:57:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-16 11:57:54,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-11-16 11:57:54,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-16 11:57:54,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-16 11:57:54,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:54,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-16 11:57:54,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 11:57:54,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:54,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:54,323 INFO L175 Difference]: Start difference. First operand has 178 places, 192 transitions, 402 flow. Second operand 5 states and 852 transitions. [2022-11-16 11:57:54,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 181 transitions, 426 flow [2022-11-16 11:57:54,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 181 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:54,336 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 398 flow [2022-11-16 11:57:54,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2022-11-16 11:57:54,337 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 6 predicate places. [2022-11-16 11:57:54,338 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 398 flow [2022-11-16 11:57:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 11:57:54,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:54,341 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:54,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:57:54,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:57:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash 153053649, now seen corresponding path program 1 times [2022-11-16 11:57:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:54,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319374441] [2022-11-16 11:57:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:54,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:54,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319374441] [2022-11-16 11:57:54,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319374441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:54,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:54,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562006889] [2022-11-16 11:57:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:54,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:54,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-16 11:57:54,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 11:57:54,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:54,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-16 11:57:54,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:54,679 INFO L130 PetriNetUnfolder]: 2/253 cut-off events. [2022-11-16 11:57:54,679 INFO L131 PetriNetUnfolder]: For 22/52 co-relation queries the response was YES. [2022-11-16 11:57:54,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 253 events. 2/253 cut-off events. For 22/52 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 594 event pairs, 0 based on Foata normal form. 7/240 useless extension candidates. Maximal degree in co-relation 236. Up to 10 conditions per place. [2022-11-16 11:57:54,683 INFO L137 encePairwiseOnDemand]: 186/192 looper letters, 11 selfloop transitions, 8 changer transitions 0/177 dead transitions. [2022-11-16 11:57:54,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 177 transitions, 434 flow [2022-11-16 11:57:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2022-11-16 11:57:54,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.840625 [2022-11-16 11:57:54,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2022-11-16 11:57:54,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2022-11-16 11:57:54,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:54,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2022-11-16 11:57:54,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 11:57:54,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:54,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:54,700 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 398 flow. Second operand 5 states and 807 transitions. [2022-11-16 11:57:54,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 177 transitions, 434 flow [2022-11-16 11:57:54,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 177 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:54,712 INFO L231 Difference]: Finished difference. Result has 187 places, 177 transitions, 416 flow [2022-11-16 11:57:54,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=187, PETRI_TRANSITIONS=177} [2022-11-16 11:57:54,717 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 9 predicate places. [2022-11-16 11:57:54,718 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 177 transitions, 416 flow [2022-11-16 11:57:54,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 11:57:54,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:54,724 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:57:54,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:57:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 449696247, now seen corresponding path program 1 times [2022-11-16 11:57:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398606577] [2022-11-16 11:57:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398606577] [2022-11-16 11:57:54,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398606577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:54,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060849277] [2022-11-16 11:57:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:54,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:55,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:57:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:57:55,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:55,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:55,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060849277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:55,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:55,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:57:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978868042] [2022-11-16 11:57:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:57:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:57:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:57:55,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 192 [2022-11-16 11:57:55,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 177 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 11:57:55,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:55,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 192 [2022-11-16 11:57:55,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:55,538 INFO L130 PetriNetUnfolder]: 2/252 cut-off events. [2022-11-16 11:57:55,538 INFO L131 PetriNetUnfolder]: For 31/59 co-relation queries the response was YES. [2022-11-16 11:57:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 252 events. 2/252 cut-off events. For 31/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 586 event pairs, 0 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 176. Up to 13 conditions per place. [2022-11-16 11:57:55,541 INFO L137 encePairwiseOnDemand]: 187/192 looper letters, 15 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2022-11-16 11:57:55,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 179 transitions, 460 flow [2022-11-16 11:57:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:57:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:57:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-11-16 11:57:55,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-16 11:57:55,546 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-11-16 11:57:55,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-11-16 11:57:55,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:55,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-11-16 11:57:55,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states 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 11:57:55,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 11:57:55,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 11:57:55,559 INFO L175 Difference]: Start difference. First operand has 187 places, 177 transitions, 416 flow. Second operand 7 states and 1128 transitions. [2022-11-16 11:57:55,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 179 transitions, 460 flow [2022-11-16 11:57:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:55,567 INFO L231 Difference]: Finished difference. Result has 189 places, 176 transitions, 412 flow [2022-11-16 11:57:55,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=189, PETRI_TRANSITIONS=176} [2022-11-16 11:57:55,570 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 11 predicate places. [2022-11-16 11:57:55,570 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 176 transitions, 412 flow [2022-11-16 11:57:55,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 11:57:55,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:55,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:55,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:57:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:55,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:57:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash -739025627, now seen corresponding path program 1 times [2022-11-16 11:57:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:55,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372609815] [2022-11-16 11:57:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:55,899 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 11:57:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:55,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372609815] [2022-11-16 11:57:55,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372609815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:55,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:55,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:55,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913506678] [2022-11-16 11:57:55,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:55,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:55,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:55,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 192 [2022-11-16 11:57:55,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 176 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 11:57:55,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:55,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 192 [2022-11-16 11:57:55,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:56,297 INFO L130 PetriNetUnfolder]: 186/1196 cut-off events. [2022-11-16 11:57:56,298 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-11-16 11:57:56,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 1196 events. 186/1196 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8318 event pairs, 49 based on Foata normal form. 0/1067 useless extension candidates. Maximal degree in co-relation 1357. Up to 224 conditions per place. [2022-11-16 11:57:56,307 INFO L137 encePairwiseOnDemand]: 185/192 looper letters, 38 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2022-11-16 11:57:56,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 200 transitions, 566 flow [2022-11-16 11:57:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2022-11-16 11:57:56,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520833333333333 [2022-11-16 11:57:56,310 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2022-11-16 11:57:56,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2022-11-16 11:57:56,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:56,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2022-11-16 11:57:56,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:56,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:56,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states 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 11:57:56,316 INFO L175 Difference]: Start difference. First operand has 189 places, 176 transitions, 412 flow. Second operand 5 states and 818 transitions. [2022-11-16 11:57:56,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 200 transitions, 566 flow [2022-11-16 11:57:56,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 200 transitions, 555 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:57:56,324 INFO L231 Difference]: Finished difference. Result has 191 places, 181 transitions, 450 flow [2022-11-16 11:57:56,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=191, PETRI_TRANSITIONS=181} [2022-11-16 11:57:56,327 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 13 predicate places. [2022-11-16 11:57:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 181 transitions, 450 flow [2022-11-16 11:57:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 11:57:56,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:56,329 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:56,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:57:56,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:57:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash 356918205, now seen corresponding path program 1 times [2022-11-16 11:57:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:56,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742327625] [2022-11-16 11:57:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:56,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:57:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:57:56,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:57:56,399 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:57:56,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 11:57:56,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 11:57:56,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 11:57:56,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 11:57:56,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 11:57:56,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 11:57:56,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 11:57:56,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 11:57:56,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 11:57:56,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 11:57:56,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 11:57:56,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 11:57:56,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 11:57:56,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 11:57:56,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 11:57:56,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 11:57:56,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 11:57:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:57:56,408 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:57:56,409 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:57:56,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:57:56,455 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:57:56,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 241 transitions, 512 flow [2022-11-16 11:57:56,541 INFO L130 PetriNetUnfolder]: 50/473 cut-off events. [2022-11-16 11:57:56,541 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:57:56,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 473 events. 50/473 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-11-16 11:57:56,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 241 transitions, 512 flow [2022-11-16 11:57:56,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 241 transitions, 512 flow [2022-11-16 11:57:56,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:56,555 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;@4b20b1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:56,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 11:57:56,563 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-16 11:57:56,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:57:56,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:56,564 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 11:57:56,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:57:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 143423295, now seen corresponding path program 1 times [2022-11-16 11:57:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:56,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629683962] [2022-11-16 11:57:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,644 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 11:57:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629683962] [2022-11-16 11:57:56,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629683962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:56,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:56,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104531071] [2022-11-16 11:57:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:56,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-16 11:57:56,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 241 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 11:57:56,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:56,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-16 11:57:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:56,824 INFO L130 PetriNetUnfolder]: 7/405 cut-off events. [2022-11-16 11:57:56,825 INFO L131 PetriNetUnfolder]: For 107/316 co-relation queries the response was YES. [2022-11-16 11:57:56,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 405 events. 7/405 cut-off events. For 107/316 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1298 event pairs, 1 based on Foata normal form. 205/566 useless extension candidates. Maximal degree in co-relation 294. Up to 40 conditions per place. [2022-11-16 11:57:56,830 INFO L137 encePairwiseOnDemand]: 211/241 looper letters, 21 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2022-11-16 11:57:56,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 224 transitions, 528 flow [2022-11-16 11:57:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2022-11-16 11:57:56,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8838174273858921 [2022-11-16 11:57:56,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2022-11-16 11:57:56,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2022-11-16 11:57:56,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:56,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2022-11-16 11:57:56,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states 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 11:57:56,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:57:56,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:57:56,844 INFO L175 Difference]: Start difference. First operand has 222 places, 241 transitions, 512 flow. Second operand 5 states and 1065 transitions. [2022-11-16 11:57:56,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 224 transitions, 528 flow [2022-11-16 11:57:56,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 224 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:56,851 INFO L231 Difference]: Finished difference. Result has 228 places, 220 transitions, 496 flow [2022-11-16 11:57:56,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=228, PETRI_TRANSITIONS=220} [2022-11-16 11:57:56,852 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 6 predicate places. [2022-11-16 11:57:56,852 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 220 transitions, 496 flow [2022-11-16 11:57:56,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 11:57:56,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:56,853 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:56,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:57:56,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:57:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1663158705, now seen corresponding path program 1 times [2022-11-16 11:57:56,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:56,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193321379] [2022-11-16 11:57:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:56,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:57:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:56,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193321379] [2022-11-16 11:57:56,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193321379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:56,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:56,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234063482] [2022-11-16 11:57:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:56,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-16 11:57:56,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 220 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 11:57:56,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:56,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-16 11:57:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:57,098 INFO L130 PetriNetUnfolder]: 7/403 cut-off events. [2022-11-16 11:57:57,098 INFO L131 PetriNetUnfolder]: For 111/304 co-relation queries the response was YES. [2022-11-16 11:57:57,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 403 events. 7/403 cut-off events. For 111/304 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1287 event pairs, 1 based on Foata normal form. 11/377 useless extension candidates. Maximal degree in co-relation 422. Up to 20 conditions per place. [2022-11-16 11:57:57,104 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 13 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-16 11:57:57,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 536 flow [2022-11-16 11:57:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-16 11:57:57,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84149377593361 [2022-11-16 11:57:57,109 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-16 11:57:57,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-16 11:57:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:57,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-16 11:57:57,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states 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 11:57:57,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:57:57,118 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:57:57,118 INFO L175 Difference]: Start difference. First operand has 228 places, 220 transitions, 496 flow. Second operand 5 states and 1014 transitions. [2022-11-16 11:57:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 536 flow [2022-11-16 11:57:57,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 220 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:57:57,125 INFO L231 Difference]: Finished difference. Result has 231 places, 220 transitions, 514 flow [2022-11-16 11:57:57,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=231, PETRI_TRANSITIONS=220} [2022-11-16 11:57:57,128 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 9 predicate places. [2022-11-16 11:57:57,128 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 220 transitions, 514 flow [2022-11-16 11:57:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 11:57:57,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:57,131 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:57:57,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:57:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -18311638, now seen corresponding path program 1 times [2022-11-16 11:57:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:57,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982528231] [2022-11-16 11:57:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982528231] [2022-11-16 11:57:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982528231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743612623] [2022-11-16 11:57:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:57,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:57,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:57,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:57:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:57:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:57,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:57:57,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743612623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:57,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:57:57,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:57:57,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121201488] [2022-11-16 11:57:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:57,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:57:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:57:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:57:57,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 241 [2022-11-16 11:57:57,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 220 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 11:57:57,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:57,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 241 [2022-11-16 11:57:57,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:57,645 INFO L130 PetriNetUnfolder]: 7/401 cut-off events. [2022-11-16 11:57:57,645 INFO L131 PetriNetUnfolder]: For 119/296 co-relation queries the response was YES. [2022-11-16 11:57:57,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 401 events. 7/401 cut-off events. For 119/296 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1276 event pairs, 1 based on Foata normal form. 8/372 useless extension candidates. Maximal degree in co-relation 315. Up to 26 conditions per place. [2022-11-16 11:57:57,650 INFO L137 encePairwiseOnDemand]: 236/241 looper letters, 17 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2022-11-16 11:57:57,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 222 transitions, 562 flow [2022-11-16 11:57:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:57:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:57:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1417 transitions. [2022-11-16 11:57:57,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8399525785417902 [2022-11-16 11:57:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1417 transitions. [2022-11-16 11:57:57,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1417 transitions. [2022-11-16 11:57:57,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:57,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1417 transitions. [2022-11-16 11:57:57,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.42857142857142) internal successors, (1417), 7 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 11:57:57,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 11:57:57,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 11:57:57,664 INFO L175 Difference]: Start difference. First operand has 231 places, 220 transitions, 514 flow. Second operand 7 states and 1417 transitions. [2022-11-16 11:57:57,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 222 transitions, 562 flow [2022-11-16 11:57:57,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 222 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:57,670 INFO L231 Difference]: Finished difference. Result has 233 places, 219 transitions, 510 flow [2022-11-16 11:57:57,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=233, PETRI_TRANSITIONS=219} [2022-11-16 11:57:57,671 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 11 predicate places. [2022-11-16 11:57:57,671 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 219 transitions, 510 flow [2022-11-16 11:57:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 11:57:57,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:57,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:57,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:57,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:57:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 908852869, now seen corresponding path program 1 times [2022-11-16 11:57:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:57,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529692444] [2022-11-16 11:57:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:57,986 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 11:57:57,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:57,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529692444] [2022-11-16 11:57:57,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529692444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:57,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:57,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:57,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807513789] [2022-11-16 11:57:57,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:57,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-16 11:57:57,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 219 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 11:57:57,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:57,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-16 11:57:57,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:00,329 INFO L130 PetriNetUnfolder]: 2004/8879 cut-off events. [2022-11-16 11:58:00,329 INFO L131 PetriNetUnfolder]: For 1187/1187 co-relation queries the response was YES. [2022-11-16 11:58:00,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12527 conditions, 8879 events. 2004/8879 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 97573 event pairs, 691 based on Foata normal form. 0/7836 useless extension candidates. Maximal degree in co-relation 8148. Up to 2180 conditions per place. [2022-11-16 11:58:00,494 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 54 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2022-11-16 11:58:00,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 255 transitions, 748 flow [2022-11-16 11:58:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1021 transitions. [2022-11-16 11:58:00,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473029045643153 [2022-11-16 11:58:00,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1021 transitions. [2022-11-16 11:58:00,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1021 transitions. [2022-11-16 11:58:00,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:00,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1021 transitions. [2022-11-16 11:58:00,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:58:00,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:58:00,506 INFO L175 Difference]: Start difference. First operand has 233 places, 219 transitions, 510 flow. Second operand 5 states and 1021 transitions. [2022-11-16 11:58:00,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 255 transitions, 748 flow [2022-11-16 11:58:00,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 255 transitions, 737 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:58:00,513 INFO L231 Difference]: Finished difference. Result has 235 places, 226 transitions, 563 flow [2022-11-16 11:58:00,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=235, PETRI_TRANSITIONS=226} [2022-11-16 11:58:00,515 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 13 predicate places. [2022-11-16 11:58:00,515 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 226 transitions, 563 flow [2022-11-16 11:58:00,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 11:58:00,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:00,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:00,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:58:00,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:58:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1549753815, now seen corresponding path program 1 times [2022-11-16 11:58:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:00,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10954782] [2022-11-16 11:58:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:00,637 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 11:58:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:00,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10954782] [2022-11-16 11:58:00,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10954782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:00,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:00,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:58:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743272371] [2022-11-16 11:58:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:58:00,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 241 [2022-11-16 11:58:00,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 226 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states 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 11:58:00,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:00,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 241 [2022-11-16 11:58:00,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:04,408 INFO L130 PetriNetUnfolder]: 4151/16112 cut-off events. [2022-11-16 11:58:04,409 INFO L131 PetriNetUnfolder]: For 4191/4195 co-relation queries the response was YES. [2022-11-16 11:58:04,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25497 conditions, 16112 events. 4151/16112 cut-off events. For 4191/4195 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 194344 event pairs, 1022 based on Foata normal form. 4/14324 useless extension candidates. Maximal degree in co-relation 17984. Up to 2912 conditions per place. [2022-11-16 11:58:04,633 INFO L137 encePairwiseOnDemand]: 228/241 looper letters, 102 selfloop transitions, 27 changer transitions 0/317 dead transitions. [2022-11-16 11:58:04,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 317 transitions, 1150 flow [2022-11-16 11:58:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:58:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1805 transitions. [2022-11-16 11:58:04,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8321807284462887 [2022-11-16 11:58:04,639 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1805 transitions. [2022-11-16 11:58:04,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1805 transitions. [2022-11-16 11:58:04,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:04,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1805 transitions. [2022-11-16 11:58:04,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.55555555555554) internal successors, (1805), 9 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 11:58:04,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states 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 11:58:04,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states 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 11:58:04,655 INFO L175 Difference]: Start difference. First operand has 235 places, 226 transitions, 563 flow. Second operand 9 states and 1805 transitions. [2022-11-16 11:58:04,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 317 transitions, 1150 flow [2022-11-16 11:58:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 317 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:04,669 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 763 flow [2022-11-16 11:58:04,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=248, PETRI_TRANSITIONS=245} [2022-11-16 11:58:04,672 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2022-11-16 11:58:04,673 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 763 flow [2022-11-16 11:58:04,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states 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 11:58:04,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:04,674 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:58:04,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:58:04,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash -797727075, now seen corresponding path program 1 times [2022-11-16 11:58:04,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:04,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950860665] [2022-11-16 11:58:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:04,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:04,817 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 11:58:04,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950860665] [2022-11-16 11:58:04,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950860665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:04,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:04,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:58:04,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203537066] [2022-11-16 11:58:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:04,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:04,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:58:04,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 241 [2022-11-16 11:58:04,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 245 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states 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 11:58:04,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:04,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 241 [2022-11-16 11:58:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:08,559 INFO L130 PetriNetUnfolder]: 3946/14917 cut-off events. [2022-11-16 11:58:08,559 INFO L131 PetriNetUnfolder]: For 12851/13063 co-relation queries the response was YES. [2022-11-16 11:58:08,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28844 conditions, 14917 events. 3946/14917 cut-off events. For 12851/13063 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 177346 event pairs, 1054 based on Foata normal form. 254/13767 useless extension candidates. Maximal degree in co-relation 20941. Up to 3161 conditions per place. [2022-11-16 11:58:08,750 INFO L137 encePairwiseOnDemand]: 228/241 looper letters, 109 selfloop transitions, 27 changer transitions 0/324 dead transitions. [2022-11-16 11:58:08,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 324 transitions, 1414 flow [2022-11-16 11:58:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:58:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1803 transitions. [2022-11-16 11:58:08,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8312586445366529 [2022-11-16 11:58:08,757 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1803 transitions. [2022-11-16 11:58:08,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1803 transitions. [2022-11-16 11:58:08,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:08,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1803 transitions. [2022-11-16 11:58:08,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.33333333333334) internal successors, (1803), 9 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states 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 11:58:08,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states 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 11:58:08,770 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states 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 11:58:08,770 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 763 flow. Second operand 9 states and 1803 transitions. [2022-11-16 11:58:08,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 324 transitions, 1414 flow [2022-11-16 11:58:08,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 324 transitions, 1347 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 11:58:08,821 INFO L231 Difference]: Finished difference. Result has 254 places, 253 transitions, 844 flow [2022-11-16 11:58:08,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=254, PETRI_TRANSITIONS=253} [2022-11-16 11:58:08,824 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 32 predicate places. [2022-11-16 11:58:08,825 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 253 transitions, 844 flow [2022-11-16 11:58:08,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states 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 11:58:08,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:08,826 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:58:08,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:58:08,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1233938665, now seen corresponding path program 1 times [2022-11-16 11:58:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:08,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966447464] [2022-11-16 11:58:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:58:08,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:08,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966447464] [2022-11-16 11:58:08,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966447464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:08,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:08,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36815011] [2022-11-16 11:58:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:08,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:08,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-16 11:58:08,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 253 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 11:58:08,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:08,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-16 11:58:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:13,916 INFO L130 PetriNetUnfolder]: 4693/20532 cut-off events. [2022-11-16 11:58:13,916 INFO L131 PetriNetUnfolder]: For 17518/17840 co-relation queries the response was YES. [2022-11-16 11:58:14,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39346 conditions, 20532 events. 4693/20532 cut-off events. For 17518/17840 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 266804 event pairs, 1655 based on Foata normal form. 180/18712 useless extension candidates. Maximal degree in co-relation 29125. Up to 5174 conditions per place. [2022-11-16 11:58:14,229 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 95 selfloop transitions, 11 changer transitions 0/303 dead transitions. [2022-11-16 11:58:14,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 303 transitions, 1366 flow [2022-11-16 11:58:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1019 transitions. [2022-11-16 11:58:14,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.845643153526971 [2022-11-16 11:58:14,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1019 transitions. [2022-11-16 11:58:14,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1019 transitions. [2022-11-16 11:58:14,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:14,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1019 transitions. [2022-11-16 11:58:14,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.8) internal successors, (1019), 5 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 11:58:14,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:58:14,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states 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 11:58:14,256 INFO L175 Difference]: Start difference. First operand has 254 places, 253 transitions, 844 flow. Second operand 5 states and 1019 transitions. [2022-11-16 11:58:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 303 transitions, 1366 flow [2022-11-16 11:58:14,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 303 transitions, 1324 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:58:14,393 INFO L231 Difference]: Finished difference. Result has 257 places, 258 transitions, 894 flow [2022-11-16 11:58:14,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=257, PETRI_TRANSITIONS=258} [2022-11-16 11:58:14,395 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, 35 predicate places. [2022-11-16 11:58:14,395 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 258 transitions, 894 flow [2022-11-16 11:58:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 11:58:14,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:14,397 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:58:14,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:58:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -421234565, now seen corresponding path program 1 times [2022-11-16 11:58:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:14,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063751730] [2022-11-16 11:58:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:14,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:58:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:14,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:58:14,491 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:58:14,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 11:58:14,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 11:58:14,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 11:58:14,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 11:58:14,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 11:58:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 11:58:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 11:58:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 11:58:14,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 11:58:14,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 11:58:14,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 11:58:14,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 11:58:14,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 11:58:14,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 11:58:14,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 11:58:14,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 11:58:14,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 11:58:14,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 11:58:14,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 11:58:14,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 11:58:14,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 11:58:14,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:58:14,497 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:14,499 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:58:14,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:58:14,560 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:58:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 290 transitions, 624 flow [2022-11-16 11:58:14,779 INFO L130 PetriNetUnfolder]: 81/723 cut-off events. [2022-11-16 11:58:14,779 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:58:14,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 723 events. 81/723 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3076 event pairs, 6 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 493. Up to 32 conditions per place. [2022-11-16 11:58:14,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 290 transitions, 624 flow [2022-11-16 11:58:14,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 290 transitions, 624 flow [2022-11-16 11:58:14,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:14,956 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;@4b20b1a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:14,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:58:14,961 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-16 11:58:14,962 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:14,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:14,962 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 11:58:14,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:58:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 627718574, now seen corresponding path program 1 times [2022-11-16 11:58:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:14,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924344187] [2022-11-16 11:58:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:15,023 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 11:58:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:15,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924344187] [2022-11-16 11:58:15,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924344187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:15,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:15,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457839153] [2022-11-16 11:58:15,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:15,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:15,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-16 11:58:15,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 290 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 11:58:15,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:15,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-16 11:58:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:15,248 INFO L130 PetriNetUnfolder]: 20/636 cut-off events. [2022-11-16 11:58:15,248 INFO L131 PetriNetUnfolder]: For 112/215 co-relation queries the response was YES. [2022-11-16 11:58:15,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 636 events. 20/636 cut-off events. For 112/215 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2679 event pairs, 6 based on Foata normal form. 475/1035 useless extension candidates. Maximal degree in co-relation 478. Up to 71 conditions per place. [2022-11-16 11:58:15,255 INFO L137 encePairwiseOnDemand]: 254/290 looper letters, 23 selfloop transitions, 4 changer transitions 0/267 dead transitions. [2022-11-16 11:58:15,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 267 transitions, 632 flow [2022-11-16 11:58:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2022-11-16 11:58:15,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813793103448276 [2022-11-16 11:58:15,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2022-11-16 11:58:15,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2022-11-16 11:58:15,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:15,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2022-11-16 11:58:15,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 11:58:15,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:15,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:15,270 INFO L175 Difference]: Start difference. First operand has 266 places, 290 transitions, 624 flow. Second operand 5 states and 1278 transitions. [2022-11-16 11:58:15,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 267 transitions, 632 flow [2022-11-16 11:58:15,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 267 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:15,277 INFO L231 Difference]: Finished difference. Result has 272 places, 263 transitions, 596 flow [2022-11-16 11:58:15,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=272, PETRI_TRANSITIONS=263} [2022-11-16 11:58:15,278 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 6 predicate places. [2022-11-16 11:58:15,279 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 263 transitions, 596 flow [2022-11-16 11:58:15,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states 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 11:58:15,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:15,282 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:15,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:58:15,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:58:15,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1160313747, now seen corresponding path program 1 times [2022-11-16 11:58:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146536773] [2022-11-16 11:58:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:15,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:58:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:15,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146536773] [2022-11-16 11:58:15,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146536773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:15,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:15,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349536055] [2022-11-16 11:58:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:15,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-16 11:58:15,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 263 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:15,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:15,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-16 11:58:15,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:15,580 INFO L130 PetriNetUnfolder]: 20/633 cut-off events. [2022-11-16 11:58:15,580 INFO L131 PetriNetUnfolder]: For 122/217 co-relation queries the response was YES. [2022-11-16 11:58:15,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 633 events. 20/633 cut-off events. For 122/217 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2660 event pairs, 6 based on Foata normal form. 15/582 useless extension candidates. Maximal degree in co-relation 713. Up to 42 conditions per place. [2022-11-16 11:58:15,590 INFO L137 encePairwiseOnDemand]: 284/290 looper letters, 15 selfloop transitions, 8 changer transitions 0/263 dead transitions. [2022-11-16 11:58:15,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 263 transitions, 640 flow [2022-11-16 11:58:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1221 transitions. [2022-11-16 11:58:15,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420689655172414 [2022-11-16 11:58:15,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1221 transitions. [2022-11-16 11:58:15,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1221 transitions. [2022-11-16 11:58:15,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:15,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1221 transitions. [2022-11-16 11:58:15,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.2) internal successors, (1221), 5 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states 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 11:58:15,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:15,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:15,604 INFO L175 Difference]: Start difference. First operand has 272 places, 263 transitions, 596 flow. Second operand 5 states and 1221 transitions. [2022-11-16 11:58:15,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 263 transitions, 640 flow [2022-11-16 11:58:15,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 263 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:15,611 INFO L231 Difference]: Finished difference. Result has 275 places, 263 transitions, 614 flow [2022-11-16 11:58:15,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=275, PETRI_TRANSITIONS=263} [2022-11-16 11:58:15,613 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 9 predicate places. [2022-11-16 11:58:15,613 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 263 transitions, 614 flow [2022-11-16 11:58:15,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:15,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:15,614 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:15,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:58:15,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:58:15,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1609986834, now seen corresponding path program 1 times [2022-11-16 11:58:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552588890] [2022-11-16 11:58:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:15,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552588890] [2022-11-16 11:58:15,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552588890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:58:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398348156] [2022-11-16 11:58:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:15,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:15,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:15,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:58:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:15,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:58:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:58:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:15,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:58:15,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398348156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:15,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:58:15,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:58:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263354130] [2022-11-16 11:58:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:15,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:15,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 290 [2022-11-16 11:58:15,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 263 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 11:58:15,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:15,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 290 [2022-11-16 11:58:15,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:16,209 INFO L130 PetriNetUnfolder]: 20/630 cut-off events. [2022-11-16 11:58:16,209 INFO L131 PetriNetUnfolder]: For 139/226 co-relation queries the response was YES. [2022-11-16 11:58:16,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 630 events. 20/630 cut-off events. For 139/226 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2633 event pairs, 6 based on Foata normal form. 10/574 useless extension candidates. Maximal degree in co-relation 504. Up to 51 conditions per place. [2022-11-16 11:58:16,219 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 19 selfloop transitions, 6 changer transitions 0/265 dead transitions. [2022-11-16 11:58:16,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 265 transitions, 666 flow [2022-11-16 11:58:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:58:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:58:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1706 transitions. [2022-11-16 11:58:16,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403940886699507 [2022-11-16 11:58:16,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1706 transitions. [2022-11-16 11:58:16,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1706 transitions. [2022-11-16 11:58:16,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:16,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1706 transitions. [2022-11-16 11:58:16,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.71428571428572) internal successors, (1706), 7 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states 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 11:58:16,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:58:16,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states 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 11:58:16,236 INFO L175 Difference]: Start difference. First operand has 275 places, 263 transitions, 614 flow. Second operand 7 states and 1706 transitions. [2022-11-16 11:58:16,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 265 transitions, 666 flow [2022-11-16 11:58:16,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 265 transitions, 654 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:58:16,242 INFO L231 Difference]: Finished difference. Result has 277 places, 262 transitions, 610 flow [2022-11-16 11:58:16,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=277, PETRI_TRANSITIONS=262} [2022-11-16 11:58:16,243 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 11 predicate places. [2022-11-16 11:58:16,244 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 262 transitions, 610 flow [2022-11-16 11:58:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 11:58:16,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:16,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b963155-ab59-4f73-aa0e-303c17b7a6f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:58:16,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:58:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1849819463, now seen corresponding path program 1 times [2022-11-16 11:58:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166505373] [2022-11-16 11:58:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,667 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 11:58:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166505373] [2022-11-16 11:58:16,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166505373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:16,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:16,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303794076] [2022-11-16 11:58:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:58:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:58:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:58:16,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 290 [2022-11-16 11:58:16,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 262 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:16,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 290 [2022-11-16 11:58:16,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:31,712 INFO L130 PetriNetUnfolder]: 16519/62035 cut-off events. [2022-11-16 11:58:31,713 INFO L131 PetriNetUnfolder]: For 10431/10431 co-relation queries the response was YES. [2022-11-16 11:58:32,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88954 conditions, 62035 events. 16519/62035 cut-off events. For 10431/10431 co-relation queries the response was YES. Maximal size of possible extension queue 1648. Compared 890398 event pairs, 6876 based on Foata normal form. 0/54968 useless extension candidates. Maximal degree in co-relation 47458. Up to 16715 conditions per place. [2022-11-16 11:58:32,616 INFO L137 encePairwiseOnDemand]: 281/290 looper letters, 70 selfloop transitions, 10 changer transitions 0/310 dead transitions. [2022-11-16 11:58:32,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 310 transitions, 938 flow [2022-11-16 11:58:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:58:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:58:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-11-16 11:58:32,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441379310344828 [2022-11-16 11:58:32,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-11-16 11:58:32,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-11-16 11:58:32,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:32,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-11-16 11:58:32,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 11:58:32,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:32,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 11:58:32,630 INFO L175 Difference]: Start difference. First operand has 277 places, 262 transitions, 610 flow. Second operand 5 states and 1224 transitions. [2022-11-16 11:58:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 310 transitions, 938 flow [2022-11-16 11:58:32,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 310 transitions, 927 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:58:32,643 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 678 flow [2022-11-16 11:58:32,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2022-11-16 11:58:32,645 INFO L288 CegarLoopForPetriNet]: 266 programPoint places, 13 predicate places. [2022-11-16 11:58:32,645 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 678 flow [2022-11-16 11:58:32,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:32,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:32,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:32,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:58:32,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:58:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1180224904, now seen corresponding path program 1 times [2022-11-16 11:58:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:32,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197915803] [2022-11-16 11:58:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:32,775 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 11:58:32,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197915803] [2022-11-16 11:58:32,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197915803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:32,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:32,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:58:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687002209] [2022-11-16 11:58:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:32,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:58:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:58:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:58:32,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 290 [2022-11-16 11:58:32,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states 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 11:58:32,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:32,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 290 [2022-11-16 11:58:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand