./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R --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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- 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-38b53e6 [2022-11-25 17:36:55,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:36:55,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:36:55,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:36:55,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:36:55,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:36:55,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:36:55,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:36:55,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:36:55,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:36:55,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:36:55,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:36:55,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:36:55,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:36:55,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:36:55,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:36:55,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:36:55,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:36:55,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:36:55,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:36:55,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:36:55,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:36:55,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:36:55,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:36:55,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:36:55,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:36:55,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:36:55,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:36:55,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:36:55,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:36:55,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:36:55,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:36:55,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:36:55,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:36:55,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:36:55,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:36:55,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:36:55,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:36:55,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:36:55,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:36:55,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:36:55,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:36:55,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:36:55,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:36:55,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:36:55,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:36:55,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:36:55,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:36:55,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:36:55,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:36:55,672 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:36:55,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:36:55,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:36:55,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:36:55,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:36:55,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:36:55,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:36:55,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:36:55,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:36:55,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:36:55,674 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:36:55,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:36:55,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:36:55,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:36:55,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:36:55,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:36:55,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:36:55,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:36:55,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:36:55,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:36:55,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:36:55,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:36:55,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:36:55,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:36:55,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:36:55,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:36:55,678 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:36:55,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:36:55,678 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2022-11-25 17:36:55,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:36:56,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:36:56,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:36:56,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:36:56,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:36:56,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-25 17:36:59,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:36:59,714 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:36:59,715 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2022-11-25 17:36:59,728 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/data/c18218c0a/394cd0ca2b10421fa819c92220e80e2d/FLAGaf2076eab [2022-11-25 17:36:59,743 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/data/c18218c0a/394cd0ca2b10421fa819c92220e80e2d [2022-11-25 17:36:59,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:36:59,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:36:59,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:36:59,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:36:59,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:36:59,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:59" (1/1) ... [2022-11-25 17:36:59,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c01f19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:59, skipping insertion in model container [2022-11-25 17:36:59,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:59" (1/1) ... [2022-11-25 17:36:59,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:36:59,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:37:00,003 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:37:00,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,171 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-25 17:37:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:37:00,194 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:37:00,212 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:37:00,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,265 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2022-11-25 17:37:00,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:37:00,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:37:00,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:37:00,335 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:37:00,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00 WrapperNode [2022-11-25 17:37:00,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:37:00,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:37:00,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:37:00,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:37:00,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,420 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2022-11-25 17:37:00,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:37:00,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:37:00,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:37:00,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:37:00,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:37:00,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:37:00,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:37:00,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:37:00,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (1/1) ... [2022-11-25 17:37:00,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:37:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:37:00,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:37:00,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:37:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:37:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:37:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:37:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:37:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-25 17:37:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-25 17:37:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:37:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:37:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:37:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:37:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:37:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:37:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-25 17:37:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-25 17:37:00,605 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:37:00,869 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:37:00,871 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:37:01,223 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:37:01,279 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:37:01,280 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:37:01,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:01 BoogieIcfgContainer [2022-11-25 17:37:01,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:37:01,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:37:01,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:37:01,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:37:01,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:36:59" (1/3) ... [2022-11-25 17:37:01,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d97239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:37:01, skipping insertion in model container [2022-11-25 17:37:01,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:37:00" (2/3) ... [2022-11-25 17:37:01,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d97239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:37:01, skipping insertion in model container [2022-11-25 17:37:01,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:01" (3/3) ... [2022-11-25 17:37:01,305 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2022-11-25 17:37:01,317 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:37:01,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:37:01,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 17:37:01,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:37:01,446 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:37:01,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 120 transitions, 272 flow [2022-11-25 17:37:01,551 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-25 17:37:01,552 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:37:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 116 events. 2/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-25 17:37:01,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 120 transitions, 272 flow [2022-11-25 17:37:01,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 102 transitions, 225 flow [2022-11-25 17:37:01,570 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:37:01,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 102 transitions, 225 flow [2022-11-25 17:37:01,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 102 transitions, 225 flow [2022-11-25 17:37:01,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 102 transitions, 225 flow [2022-11-25 17:37:01,626 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-25 17:37:01,626 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:37:01,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 102 events. 2/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-25 17:37:01,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2022-11-25 17:37:06,032 INFO L134 LiptonReduction]: Checked pairs total: 9363 [2022-11-25 17:37:06,032 INFO L136 LiptonReduction]: Total number of compositions: 69 [2022-11-25 17:37:06,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:37:06,077 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;@f21c10e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:37:06,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 17:37:06,084 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-11-25 17:37:06,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:37:06,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:06,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:37:06,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 389857758, now seen corresponding path program 1 times [2022-11-25 17:37:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:06,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245289424] [2022-11-25 17:37:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:06,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:06,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245289424] [2022-11-25 17:37:06,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245289424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:06,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:06,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:37:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344377783] [2022-11-25 17:37:06,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:06,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 189 [2022-11-25 17:37:06,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:06,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:06,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 189 [2022-11-25 17:37:06,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:08,231 INFO L130 PetriNetUnfolder]: 8539/13082 cut-off events. [2022-11-25 17:37:08,232 INFO L131 PetriNetUnfolder]: For 1270/1270 co-relation queries the response was YES. [2022-11-25 17:37:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26159 conditions, 13082 events. 8539/13082 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 88132 event pairs, 3734 based on Foata normal form. 0/10571 useless extension candidates. Maximal degree in co-relation 19334. Up to 6931 conditions per place. [2022-11-25 17:37:08,346 INFO L137 encePairwiseOnDemand]: 174/189 looper letters, 51 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2022-11-25 17:37:08,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 300 flow [2022-11-25 17:37:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2022-11-25 17:37:08,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2022-11-25 17:37:08,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2022-11-25 17:37:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2022-11-25 17:37:08,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:08,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2022-11-25 17:37:08,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:08,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:08,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:08,393 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 107 flow. Second operand 3 states and 345 transitions. [2022-11-25 17:37:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 300 flow [2022-11-25 17:37:08,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 17:37:08,459 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 186 flow [2022-11-25 17:37:08,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2022-11-25 17:37:08,465 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2022-11-25 17:37:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 186 flow [2022-11-25 17:37:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:08,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:08,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:37:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:37:08,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 389857756, now seen corresponding path program 1 times [2022-11-25 17:37:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843221369] [2022-11-25 17:37:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:08,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843221369] [2022-11-25 17:37:08,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843221369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:08,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:08,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:37:08,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593219332] [2022-11-25 17:37:08,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:08,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:08,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 189 [2022-11-25 17:37:08,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:08,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:08,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 189 [2022-11-25 17:37:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:09,941 INFO L130 PetriNetUnfolder]: 5877/9522 cut-off events. [2022-11-25 17:37:09,941 INFO L131 PetriNetUnfolder]: For 5341/5341 co-relation queries the response was YES. [2022-11-25 17:37:09,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23716 conditions, 9522 events. 5877/9522 cut-off events. For 5341/5341 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 67568 event pairs, 3686 based on Foata normal form. 1192/10213 useless extension candidates. Maximal degree in co-relation 4046. Up to 7161 conditions per place. [2022-11-25 17:37:10,012 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 53 selfloop transitions, 13 changer transitions 4/78 dead transitions. [2022-11-25 17:37:10,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 402 flow [2022-11-25 17:37:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2022-11-25 17:37:10,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2022-11-25 17:37:10,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2022-11-25 17:37:10,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2022-11-25 17:37:10,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:10,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2022-11-25 17:37:10,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:10,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:10,025 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 186 flow. Second operand 3 states and 345 transitions. [2022-11-25 17:37:10,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 402 flow [2022-11-25 17:37:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:10,185 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 256 flow [2022-11-25 17:37:10,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2022-11-25 17:37:10,186 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-11-25 17:37:10,186 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 256 flow [2022-11-25 17:37:10,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:10,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:10,187 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:10,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:37:10,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash -201910923, now seen corresponding path program 1 times [2022-11-25 17:37:10,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:10,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017122111] [2022-11-25 17:37:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017122111] [2022-11-25 17:37:10,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017122111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:10,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:10,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319697733] [2022-11-25 17:37:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:10,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:37:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:37:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:37:10,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 189 [2022-11-25 17:37:10,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:10,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:10,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 189 [2022-11-25 17:37:10,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:11,624 INFO L130 PetriNetUnfolder]: 5172/8644 cut-off events. [2022-11-25 17:37:11,625 INFO L131 PetriNetUnfolder]: For 6736/6736 co-relation queries the response was YES. [2022-11-25 17:37:11,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22946 conditions, 8644 events. 5172/8644 cut-off events. For 6736/6736 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 62761 event pairs, 1664 based on Foata normal form. 400/8901 useless extension candidates. Maximal degree in co-relation 11612. Up to 3475 conditions per place. [2022-11-25 17:37:11,678 INFO L137 encePairwiseOnDemand]: 174/189 looper letters, 64 selfloop transitions, 19 changer transitions 4/95 dead transitions. [2022-11-25 17:37:11,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 534 flow [2022-11-25 17:37:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:37:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:37:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2022-11-25 17:37:11,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6044973544973545 [2022-11-25 17:37:11,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2022-11-25 17:37:11,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2022-11-25 17:37:11,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:11,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2022-11-25 17:37:11,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:11,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:11,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:11,686 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 256 flow. Second operand 4 states and 457 transitions. [2022-11-25 17:37:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 534 flow [2022-11-25 17:37:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:11,730 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 308 flow [2022-11-25 17:37:11,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2022-11-25 17:37:11,733 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2022-11-25 17:37:11,733 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 308 flow [2022-11-25 17:37:11,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:11,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:11,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:11,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:37:11,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2046287424, now seen corresponding path program 1 times [2022-11-25 17:37:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:11,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262548351] [2022-11-25 17:37:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:11,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:11,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262548351] [2022-11-25 17:37:11,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262548351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:11,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:37:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807241995] [2022-11-25 17:37:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:37:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:37:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:37:11,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 189 [2022-11-25 17:37:11,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:11,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:11,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 189 [2022-11-25 17:37:11,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:12,875 INFO L130 PetriNetUnfolder]: 4711/7844 cut-off events. [2022-11-25 17:37:12,875 INFO L131 PetriNetUnfolder]: For 9021/9021 co-relation queries the response was YES. [2022-11-25 17:37:12,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22374 conditions, 7844 events. 4711/7844 cut-off events. For 9021/9021 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 55911 event pairs, 2967 based on Foata normal form. 200/7815 useless extension candidates. Maximal degree in co-relation 3633. Up to 5710 conditions per place. [2022-11-25 17:37:12,929 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 53 selfloop transitions, 15 changer transitions 6/82 dead transitions. [2022-11-25 17:37:12,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 82 transitions, 528 flow [2022-11-25 17:37:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:37:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:37:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-11-25 17:37:12,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2022-11-25 17:37:12,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-11-25 17:37:12,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-11-25 17:37:12,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:12,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-11-25 17:37:12,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:12,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:12,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:12,936 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 308 flow. Second operand 3 states and 339 transitions. [2022-11-25 17:37:12,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 82 transitions, 528 flow [2022-11-25 17:37:12,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 495 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:37:12,946 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 351 flow [2022-11-25 17:37:12,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2022-11-25 17:37:12,949 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2022-11-25 17:37:12,949 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 351 flow [2022-11-25 17:37:12,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:12,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:12,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:37:12,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1424324770, now seen corresponding path program 1 times [2022-11-25 17:37:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:12,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839606999] [2022-11-25 17:37:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:13,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:13,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839606999] [2022-11-25 17:37:13,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839606999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:13,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:13,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725539062] [2022-11-25 17:37:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:13,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:13,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:13,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:13,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:13,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:14,224 INFO L130 PetriNetUnfolder]: 5132/8448 cut-off events. [2022-11-25 17:37:14,224 INFO L131 PetriNetUnfolder]: For 12366/12366 co-relation queries the response was YES. [2022-11-25 17:37:14,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24515 conditions, 8448 events. 5132/8448 cut-off events. For 12366/12366 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 59412 event pairs, 1138 based on Foata normal form. 64/8352 useless extension candidates. Maximal degree in co-relation 12748. Up to 2122 conditions per place. [2022-11-25 17:37:14,290 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 116 selfloop transitions, 35 changer transitions 7/165 dead transitions. [2022-11-25 17:37:14,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 165 transitions, 1001 flow [2022-11-25 17:37:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:37:14,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:37:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2022-11-25 17:37:14,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5737801293356849 [2022-11-25 17:37:14,294 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 976 transitions. [2022-11-25 17:37:14,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 976 transitions. [2022-11-25 17:37:14,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:14,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 976 transitions. [2022-11-25 17:37:14,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.44444444444444) internal successors, (976), 9 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:14,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:14,303 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:14,303 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 351 flow. Second operand 9 states and 976 transitions. [2022-11-25 17:37:14,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 165 transitions, 1001 flow [2022-11-25 17:37:14,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 165 transitions, 955 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:14,408 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 499 flow [2022-11-25 17:37:14,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2022-11-25 17:37:14,409 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2022-11-25 17:37:14,409 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 499 flow [2022-11-25 17:37:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:14,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:14,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:37:14,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 989517346, now seen corresponding path program 1 times [2022-11-25 17:37:14,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:14,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475247006] [2022-11-25 17:37:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:14,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:14,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475247006] [2022-11-25 17:37:14,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475247006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:14,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:14,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19079971] [2022-11-25 17:37:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:14,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:14,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:14,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:14,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:14,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:14,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:15,296 INFO L130 PetriNetUnfolder]: 2212/4238 cut-off events. [2022-11-25 17:37:15,296 INFO L131 PetriNetUnfolder]: For 9768/9768 co-relation queries the response was YES. [2022-11-25 17:37:15,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11542 conditions, 4238 events. 2212/4238 cut-off events. For 9768/9768 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31203 event pairs, 384 based on Foata normal form. 536/4743 useless extension candidates. Maximal degree in co-relation 9163. Up to 1303 conditions per place. [2022-11-25 17:37:15,334 INFO L137 encePairwiseOnDemand]: 176/189 looper letters, 60 selfloop transitions, 12 changer transitions 22/101 dead transitions. [2022-11-25 17:37:15,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 597 flow [2022-11-25 17:37:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:37:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:37:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 733 transitions. [2022-11-25 17:37:15,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540438397581254 [2022-11-25 17:37:15,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 733 transitions. [2022-11-25 17:37:15,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 733 transitions. [2022-11-25 17:37:15,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:15,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 733 transitions. [2022-11-25 17:37:15,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:15,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:15,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:15,347 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 499 flow. Second operand 7 states and 733 transitions. [2022-11-25 17:37:15,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 597 flow [2022-11-25 17:37:15,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 575 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 17:37:15,395 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 244 flow [2022-11-25 17:37:15,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2022-11-25 17:37:15,396 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2022-11-25 17:37:15,396 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 244 flow [2022-11-25 17:37:15,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:15,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:15,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:37:15,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1550218179, now seen corresponding path program 1 times [2022-11-25 17:37:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:15,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446233543] [2022-11-25 17:37:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:15,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446233543] [2022-11-25 17:37:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446233543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:15,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:37:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673266574] [2022-11-25 17:37:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:37:15,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:37:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:37:15,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:15,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:15,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:15,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:15,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:16,004 INFO L130 PetriNetUnfolder]: 1407/2669 cut-off events. [2022-11-25 17:37:16,004 INFO L131 PetriNetUnfolder]: For 3680/3680 co-relation queries the response was YES. [2022-11-25 17:37:16,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 2669 events. 1407/2669 cut-off events. For 3680/3680 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18154 event pairs, 180 based on Foata normal form. 72/2665 useless extension candidates. Maximal degree in co-relation 6881. Up to 1129 conditions per place. [2022-11-25 17:37:16,029 INFO L137 encePairwiseOnDemand]: 178/189 looper letters, 57 selfloop transitions, 10 changer transitions 13/87 dead transitions. [2022-11-25 17:37:16,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 480 flow [2022-11-25 17:37:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:37:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:37:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 719 transitions. [2022-11-25 17:37:16,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5434618291761149 [2022-11-25 17:37:16,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 719 transitions. [2022-11-25 17:37:16,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 719 transitions. [2022-11-25 17:37:16,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:16,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 719 transitions. [2022-11-25 17:37:16,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.71428571428571) internal successors, (719), 7 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,041 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,042 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 244 flow. Second operand 7 states and 719 transitions. [2022-11-25 17:37:16,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 87 transitions, 480 flow [2022-11-25 17:37:16,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 423 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-25 17:37:16,064 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 166 flow [2022-11-25 17:37:16,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2022-11-25 17:37:16,065 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2022-11-25 17:37:16,065 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 166 flow [2022-11-25 17:37:16,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:16,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:37:16,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1550218177, now seen corresponding path program 1 times [2022-11-25 17:37:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:16,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026241318] [2022-11-25 17:37:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:16,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:16,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026241318] [2022-11-25 17:37:16,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026241318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:16,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:16,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842252886] [2022-11-25 17:37:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:16,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:16,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:16,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:16,644 INFO L130 PetriNetUnfolder]: 1395/2599 cut-off events. [2022-11-25 17:37:16,644 INFO L131 PetriNetUnfolder]: For 1666/1666 co-relation queries the response was YES. [2022-11-25 17:37:16,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 2599 events. 1395/2599 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17362 event pairs, 226 based on Foata normal form. 48/2589 useless extension candidates. Maximal degree in co-relation 4380. Up to 1384 conditions per place. [2022-11-25 17:37:16,664 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 44 selfloop transitions, 5 changer transitions 22/78 dead transitions. [2022-11-25 17:37:16,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 400 flow [2022-11-25 17:37:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:37:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:37:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 710 transitions. [2022-11-25 17:37:16,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5366591080876795 [2022-11-25 17:37:16,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 710 transitions. [2022-11-25 17:37:16,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 710 transitions. [2022-11-25 17:37:16,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:16,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 710 transitions. [2022-11-25 17:37:16,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,676 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 166 flow. Second operand 7 states and 710 transitions. [2022-11-25 17:37:16,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 400 flow [2022-11-25 17:37:16,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 366 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-25 17:37:16,695 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 142 flow [2022-11-25 17:37:16,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2022-11-25 17:37:16,696 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2022-11-25 17:37:16,697 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 142 flow [2022-11-25 17:37:16,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:16,698 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] [2022-11-25 17:37:16,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:37:16,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash 872365740, now seen corresponding path program 1 times [2022-11-25 17:37:16,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:16,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733325032] [2022-11-25 17:37:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:16,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:16,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733325032] [2022-11-25 17:37:16,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733325032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:16,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:16,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842629034] [2022-11-25 17:37:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:16,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:16,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:16,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:16,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:16,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:16,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:16,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:17,226 INFO L130 PetriNetUnfolder]: 1157/2243 cut-off events. [2022-11-25 17:37:17,227 INFO L131 PetriNetUnfolder]: For 1517/1517 co-relation queries the response was YES. [2022-11-25 17:37:17,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5471 conditions, 2243 events. 1157/2243 cut-off events. For 1517/1517 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15161 event pairs, 52 based on Foata normal form. 32/2271 useless extension candidates. Maximal degree in co-relation 5309. Up to 669 conditions per place. [2022-11-25 17:37:17,245 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 43 selfloop transitions, 6 changer transitions 19/75 dead transitions. [2022-11-25 17:37:17,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 359 flow [2022-11-25 17:37:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:37:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:37:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 706 transitions. [2022-11-25 17:37:17,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5336356764928194 [2022-11-25 17:37:17,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 706 transitions. [2022-11-25 17:37:17,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 706 transitions. [2022-11-25 17:37:17,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:17,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 706 transitions. [2022-11-25 17:37:17,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,257 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,257 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 142 flow. Second operand 7 states and 706 transitions. [2022-11-25 17:37:17,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 359 flow [2022-11-25 17:37:17,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 339 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-25 17:37:17,264 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 111 flow [2022-11-25 17:37:17,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2022-11-25 17:37:17,265 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2022-11-25 17:37:17,266 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 111 flow [2022-11-25 17:37:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:37:17,267 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] [2022-11-25 17:37:17,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:37:17,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 17:37:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 872382648, now seen corresponding path program 1 times [2022-11-25 17:37:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:17,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448057618] [2022-11-25 17:37:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:17,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448057618] [2022-11-25 17:37:17,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448057618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:17,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:17,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:37:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489538488] [2022-11-25 17:37:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:37:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:37:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:37:17,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2022-11-25 17:37:17,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:37:17,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2022-11-25 17:37:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:37:17,686 INFO L130 PetriNetUnfolder]: 755/1471 cut-off events. [2022-11-25 17:37:17,686 INFO L131 PetriNetUnfolder]: For 807/807 co-relation queries the response was YES. [2022-11-25 17:37:17,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1471 events. 755/1471 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9507 event pairs, 82 based on Foata normal form. 24/1461 useless extension candidates. Maximal degree in co-relation 927. Up to 462 conditions per place. [2022-11-25 17:37:17,693 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-11-25 17:37:17,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 278 flow [2022-11-25 17:37:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:37:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:37:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2022-11-25 17:37:17,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5222978080120937 [2022-11-25 17:37:17,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2022-11-25 17:37:17,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2022-11-25 17:37:17,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:37:17,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2022-11-25 17:37:17,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,706 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 111 flow. Second operand 7 states and 691 transitions. [2022-11-25 17:37:17,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 278 flow [2022-11-25 17:37:17,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 257 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-25 17:37:17,709 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2022-11-25 17:37:17,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2022-11-25 17:37:17,710 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-11-25 17:37:17,711 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2022-11-25 17:37:17,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:37:17,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-25 17:37:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-25 17:37:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-25 17:37:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-25 17:37:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2022-11-25 17:37:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2022-11-25 17:37:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2022-11-25 17:37:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-25 17:37:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-25 17:37:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-25 17:37:17,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-25 17:37:17,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-25 17:37:17,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-25 17:37:17,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-25 17:37:17,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-25 17:37:17,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-25 17:37:17,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:37:17,720 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:37:17,727 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:37:17,727 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:37:17,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:37:17 BasicIcfg [2022-11-25 17:37:17,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:37:17,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:37:17,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:37:17,733 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:37:17,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:37:01" (3/4) ... [2022-11-25 17:37:17,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:37:17,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-25 17:37:17,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-25 17:37:17,749 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 17:37:17,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:37:17,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:37:17,750 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:37:17,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:37:17,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:37:17,788 INFO L158 Benchmark]: Toolchain (without parser) took 18041.61ms. Allocated memory was 209.7MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 167.5MB in the beginning and 544.5MB in the end (delta: -377.0MB). Peak memory consumption was 761.7MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,789 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:37:17,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 588.33ms. Allocated memory is still 209.7MB. Free memory was 167.5MB in the beginning and 145.8MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.02ms. Allocated memory is still 209.7MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,790 INFO L158 Benchmark]: Boogie Preprocessor took 60.45ms. Allocated memory is still 209.7MB. Free memory was 143.7MB in the beginning and 142.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:37:17,790 INFO L158 Benchmark]: RCFGBuilder took 806.28ms. Allocated memory is still 209.7MB. Free memory was 141.6MB in the beginning and 123.5MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,791 INFO L158 Benchmark]: TraceAbstraction took 16440.43ms. Allocated memory was 209.7MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 123.4MB in the beginning and 547.7MB in the end (delta: -424.2MB). Peak memory consumption was 715.6MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,791 INFO L158 Benchmark]: Witness Printer took 55.51ms. Allocated memory is still 1.3GB. Free memory was 547.7MB in the beginning and 544.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:37:17,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 588.33ms. Allocated memory is still 209.7MB. Free memory was 167.5MB in the beginning and 145.8MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.02ms. Allocated memory is still 209.7MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.45ms. Allocated memory is still 209.7MB. Free memory was 143.7MB in the beginning and 142.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 806.28ms. Allocated memory is still 209.7MB. Free memory was 141.6MB in the beginning and 123.5MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16440.43ms. Allocated memory was 209.7MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 123.4MB in the beginning and 547.7MB in the end (delta: -424.2MB). Peak memory consumption was 715.6MB. Max. memory is 16.1GB. * Witness Printer took 55.51ms. Allocated memory is still 1.3GB. Free memory was 547.7MB in the beginning and 544.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 113 PlacesBefore, 56 PlacesAfterwards, 102 TransitionsBefore, 43 TransitionsAfterwards, 3096 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 9363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4914, independent: 4685, independent conditional: 0, independent unconditional: 4685, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1993, independent: 1936, independent conditional: 0, independent unconditional: 1936, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1993, independent: 1911, independent conditional: 0, independent unconditional: 1911, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 292, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4914, independent: 2749, independent conditional: 0, independent unconditional: 2749, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 1993, unknown conditional: 0, unknown unconditional: 1993] , Statistics on independence cache: Total cache size (in pairs): 519, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 148 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 677 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 625 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1309 IncrementalHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 23 mSDtfsCounter, 1309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:37:17,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77403088-1644-457c-a34a-e4f8c5b70107/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE