./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- 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 14:47:29,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 14:47:29,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 14:47:29,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 14:47:29,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 14:47:29,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 14:47:29,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 14:47:29,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 14:47:29,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 14:47:29,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 14:47:29,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 14:47:29,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 14:47:29,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 14:47:29,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 14:47:29,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 14:47:29,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 14:47:29,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 14:47:29,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 14:47:29,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 14:47:29,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 14:47:29,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 14:47:29,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 14:47:29,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 14:47:29,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 14:47:29,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 14:47:29,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 14:47:29,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 14:47:29,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 14:47:29,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 14:47:29,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 14:47:29,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 14:47:29,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 14:47:29,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 14:47:29,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 14:47:29,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 14:47:29,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 14:47:29,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 14:47:29,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 14:47:29,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 14:47:29,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 14:47:29,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 14:47:29,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 14:47:29,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 14:47:29,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 14:47:29,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 14:47:29,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 14:47:29,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 14:47:29,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 14:47:29,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 14:47:29,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 14:47:29,954 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 14:47:29,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 14:47:29,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 14:47:29,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 14:47:29,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 14:47:29,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 14:47:29,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 14:47:29,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 14:47:29,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 14:47:29,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 14:47:29,957 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 14:47:29,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 14:47:29,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 14:47:29,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 14:47:29,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 14:47:29,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 14:47:29,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 14:47:29,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 14:47:29,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 14:47:29,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 14:47:29,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 14:47:29,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 14:47:29,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 14:47:29,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 14:47:29,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 14:47:29,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 14:47:29,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 14:47:29,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 14:47:29,961 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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-11-25 14:47:30,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 14:47:30,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 14:47:30,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 14:47:30,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 14:47:30,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 14:47:30,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-25 14:47:33,382 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 14:47:33,731 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 14:47:33,732 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-25 14:47:33,749 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/data/dd28703f8/a072d5fa92bd4e189cf03679ecfefe14/FLAGae753c42a [2022-11-25 14:47:33,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/data/dd28703f8/a072d5fa92bd4e189cf03679ecfefe14 [2022-11-25 14:47:33,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 14:47:33,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 14:47:33,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 14:47:33,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 14:47:33,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 14:47:33,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:47:33" (1/1) ... [2022-11-25 14:47:33,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cac4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:33, skipping insertion in model container [2022-11-25 14:47:33,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:47:33" (1/1) ... [2022-11-25 14:47:33,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 14:47:33,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 14:47:34,331 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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-25 14:47:34,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 14:47:34,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 14:47:34,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 14:47:34,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 14:47:34,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 14:47:34,377 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 14:47:34,427 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_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-25 14:47:34,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 14:47:34,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 14:47:34,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 14:47:34,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 14:47:34,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 14:47:34,511 INFO L208 MainTranslator]: Completed translation [2022-11-25 14:47:34,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34 WrapperNode [2022-11-25 14:47:34,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 14:47:34,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 14:47:34,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 14:47:34,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 14:47:34,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,595 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-11-25 14:47:34,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 14:47:34,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 14:47:34,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 14:47:34,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 14:47:34,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 14:47:34,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 14:47:34,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 14:47:34,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 14:47:34,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (1/1) ... [2022-11-25 14:47:34,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 14:47:34,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 14:47:34,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 14:47:34,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bf1ea47-da7f-4ef1-9f30-8d0018c27fda/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 14:47:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 14:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-25 14:47:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-25 14:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 14:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 14:47:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 14:47:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 14:47:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 14:47:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 14:47:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 14:47:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 14:47:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 14:47:34,754 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 14:47:34,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 14:47:34,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 14:47:35,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 14:47:35,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 14:47:35,211 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 14:47:35,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:47:35 BoogieIcfgContainer [2022-11-25 14:47:35,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 14:47:35,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 14:47:35,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 14:47:35,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 14:47:35,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 02:47:33" (1/3) ... [2022-11-25 14:47:35,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3007e67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 02:47:35, skipping insertion in model container [2022-11-25 14:47:35,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:47:34" (2/3) ... [2022-11-25 14:47:35,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3007e67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 02:47:35, skipping insertion in model container [2022-11-25 14:47:35,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:47:35" (3/3) ... [2022-11-25 14:47:35,237 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-11-25 14:47:35,252 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 14:47:35,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 14:47:35,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 14:47:35,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 14:47:35,392 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 14:47:35,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,509 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-11-25 14:47:35,509 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:35,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-11-25 14:47:35,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,539 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 14:47:35,555 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-11-25 14:47:35,602 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-11-25 14:47:35,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:35,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-11-25 14:47:35,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-11-25 14:47:40,389 INFO L134 LiptonReduction]: Checked pairs total: 1335 [2022-11-25 14:47:40,389 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-11-25 14:47:40,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 14:47:40,414 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;@16c92c7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 14:47:40,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 14:47:40,417 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 14:47:40,418 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:40,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:40,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 14:47:40,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 14:47:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash 13745425, now seen corresponding path program 1 times [2022-11-25 14:47:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:40,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387934516] [2022-11-25 14:47:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:40,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 14:47:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387934516] [2022-11-25 14:47:40,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387934516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:40,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 14:47:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586092507] [2022-11-25 14:47:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:40,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:40,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 206 [2022-11-25 14:47:40,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 14:47:40,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:40,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 206 [2022-11-25 14:47:40,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:40,794 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2022-11-25 14:47:40,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:40,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 24 events. 9/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 42 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 40. Up to 19 conditions per place. [2022-11-25 14:47:40,797 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2022-11-25 14:47:40,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 11 transitions, 47 flow [2022-11-25 14:47:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-25 14:47:40,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40129449838187703 [2022-11-25 14:47:40,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-25 14:47:40,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-25 14:47:40,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:40,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-25 14:47:40,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 14:47:40,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 14:47:40,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 14:47:40,843 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 35 flow. Second operand 3 states and 248 transitions. [2022-11-25 14:47:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 11 transitions, 47 flow [2022-11-25 14:47:40,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 14:47:40,850 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 27 flow [2022-11-25 14:47:40,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2022-11-25 14:47:40,857 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, -4 predicate places. [2022-11-25 14:47:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 27 flow [2022-11-25 14:47:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 14:47:40,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:40,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 14:47:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 14:47:40,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 14:47:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 426109110, now seen corresponding path program 1 times [2022-11-25 14:47:40,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:40,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019626862] [2022-11-25 14:47:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:41,113 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 14:47:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019626862] [2022-11-25 14:47:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019626862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:41,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:41,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:47:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846734198] [2022-11-25 14:47:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 14:47:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 14:47:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 14:47:41,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 206 [2022-11-25 14:47:41,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 27 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 14:47:41,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:41,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 206 [2022-11-25 14:47:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:41,249 INFO L130 PetriNetUnfolder]: 13/34 cut-off events. [2022-11-25 14:47:41,250 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 14:47:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 34 events. 13/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 63. Up to 19 conditions per place. [2022-11-25 14:47:41,251 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 11 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2022-11-25 14:47:41,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 15 transitions, 67 flow [2022-11-25 14:47:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 14:47:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 14:47:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2022-11-25 14:47:41,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3580097087378641 [2022-11-25 14:47:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 295 transitions. [2022-11-25 14:47:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 295 transitions. [2022-11-25 14:47:41,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:41,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 295 transitions. [2022-11-25 14:47:41,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 14:47:41,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 14:47:41,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 14:47:41,259 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 27 flow. Second operand 4 states and 295 transitions. [2022-11-25 14:47:41,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 15 transitions, 67 flow [2022-11-25 14:47:41,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 14:47:41,261 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 37 flow [2022-11-25 14:47:41,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2022-11-25 14:47:41,262 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2022-11-25 14:47:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 37 flow [2022-11-25 14:47:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 14:47:41,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:41,263 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 14:47:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 14:47:41,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 14:47:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 324400970, now seen corresponding path program 1 times [2022-11-25 14:47:41,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:41,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820273276] [2022-11-25 14:47:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:41,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 14:47:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:41,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 14:47:41,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 14:47:41,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-25 14:47:41,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 14:47:41,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 14:47:41,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 14:47:41,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 14:47:41,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 14:47:41,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-25 14:47:41,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-25 14:47:41,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-25 14:47:41,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 14:47:41,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 14:47:41,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 14:47:41,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 14:47:41,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 14:47:41,331 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 14:47:41,333 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 14:47:41,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 14:47:41,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 14:47:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,426 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-25 14:47:41,426 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 14:47:41,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-11-25 14:47:41,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,435 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 14:47:41,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-11-25 14:47:41,464 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-25 14:47:41,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 14:47:41,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-11-25 14:47:41,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2022-11-25 14:47:45,577 INFO L134 LiptonReduction]: Checked pairs total: 19684 [2022-11-25 14:47:45,578 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-11-25 14:47:45,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 14:47:45,582 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;@16c92c7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 14:47:45,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-25 14:47:45,584 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-11-25 14:47:45,584 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:45,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:45,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 14:47:45,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 14:47:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 717340502, now seen corresponding path program 1 times [2022-11-25 14:47:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:45,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492023756] [2022-11-25 14:47:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:45,661 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 14:47:45,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492023756] [2022-11-25 14:47:45,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492023756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:45,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:45,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 14:47:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066644944] [2022-11-25 14:47:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:45,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:45,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:45,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 260 [2022-11-25 14:47:45,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 14:47:45,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:45,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 260 [2022-11-25 14:47:45,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:45,872 INFO L130 PetriNetUnfolder]: 432/784 cut-off events. [2022-11-25 14:47:45,872 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-25 14:47:45,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 784 events. 432/784 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4045 event pairs, 180 based on Foata normal form. 76/670 useless extension candidates. Maximal degree in co-relation 754. Up to 423 conditions per place. [2022-11-25 14:47:45,878 INFO L137 encePairwiseOnDemand]: 246/260 looper letters, 43 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2022-11-25 14:47:45,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 231 flow [2022-11-25 14:47:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-11-25 14:47:45,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5038461538461538 [2022-11-25 14:47:45,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-11-25 14:47:45,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-11-25 14:47:45,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:45,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-11-25 14:47:45,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 14:47:45,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 14:47:45,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 14:47:45,885 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 104 flow. Second operand 3 states and 393 transitions. [2022-11-25 14:47:45,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 231 flow [2022-11-25 14:47:45,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 229 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 14:47:45,888 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 129 flow [2022-11-25 14:47:45,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2022-11-25 14:47:45,889 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2022-11-25 14:47:45,889 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 129 flow [2022-11-25 14:47:45,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 14:47:45,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:45,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:47:45,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 14:47:45,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 14:47:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1805578056, now seen corresponding path program 1 times [2022-11-25 14:47:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926812775] [2022-11-25 14:47:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:45,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:45,948 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 14:47:45,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:45,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926812775] [2022-11-25 14:47:45,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926812775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:45,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:45,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:47:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395147488] [2022-11-25 14:47:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:45,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 260 [2022-11-25 14:47:45,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 14:47:45,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:45,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 260 [2022-11-25 14:47:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:46,185 INFO L130 PetriNetUnfolder]: 421/804 cut-off events. [2022-11-25 14:47:46,186 INFO L131 PetriNetUnfolder]: For 82/92 co-relation queries the response was YES. [2022-11-25 14:47:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 804 events. 421/804 cut-off events. For 82/92 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4496 event pairs, 182 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1176. Up to 371 conditions per place. [2022-11-25 14:47:46,194 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-11-25 14:47:46,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 237 flow [2022-11-25 14:47:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-11-25 14:47:46,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.491025641025641 [2022-11-25 14:47:46,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-11-25 14:47:46,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-11-25 14:47:46,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:46,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-11-25 14:47:46,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 14:47:46,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 14:47:46,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 14:47:46,201 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 129 flow. Second operand 3 states and 383 transitions. [2022-11-25 14:47:46,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 237 flow [2022-11-25 14:47:46,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 14:47:46,206 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 136 flow [2022-11-25 14:47:46,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2022-11-25 14:47:46,208 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2022-11-25 14:47:46,209 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 136 flow [2022-11-25 14:47:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 14:47:46,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:46,209 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 14:47:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 14:47:46,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 14:47:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1375717693, now seen corresponding path program 1 times [2022-11-25 14:47:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:46,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044195862] [2022-11-25 14:47:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:46,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 14:47:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:46,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 14:47:46,279 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 14:47:46,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-25 14:47:46,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-25 14:47:46,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-25 14:47:46,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-25 14:47:46,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-25 14:47:46,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-25 14:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-25 14:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-25 14:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-25 14:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-25 14:47:46,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-25 14:47:46,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-25 14:47:46,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-25 14:47:46,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-25 14:47:46,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-25 14:47:46,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-25 14:47:46,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-25 14:47:46,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-25 14:47:46,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-25 14:47:46,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 14:47:46,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 14:47:46,289 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 14:47:46,289 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 14:47:46,315 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 14:47:46,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,361 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-25 14:47:46,362 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 14:47:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 599 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-11-25 14:47:46,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,367 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 14:47:46,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-11-25 14:47:46,400 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-25 14:47:46,400 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 14:47:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 599 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-11-25 14:47:46,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 15840 [2022-11-25 14:47:50,691 INFO L134 LiptonReduction]: Checked pairs total: 46838 [2022-11-25 14:47:50,691 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-11-25 14:47:50,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 14:47:50,693 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;@16c92c7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 14:47:50,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 14:47:50,695 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 14:47:50,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:47:50,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:50,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 14:47:50,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1083462052, now seen corresponding path program 1 times [2022-11-25 14:47:50,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:50,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241696207] [2022-11-25 14:47:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:50,757 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 14:47:50,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241696207] [2022-11-25 14:47:50,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241696207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:50,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:50,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 14:47:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013742490] [2022-11-25 14:47:50,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:50,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 339 [2022-11-25 14:47:50,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 14:47:50,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:50,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 339 [2022-11-25 14:47:50,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:52,341 INFO L130 PetriNetUnfolder]: 7934/11448 cut-off events. [2022-11-25 14:47:52,345 INFO L131 PetriNetUnfolder]: For 829/829 co-relation queries the response was YES. [2022-11-25 14:47:52,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22918 conditions, 11448 events. 7934/11448 cut-off events. For 829/829 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 71542 event pairs, 3042 based on Foata normal form. 862/9508 useless extension candidates. Maximal degree in co-relation 6616. Up to 8137 conditions per place. [2022-11-25 14:47:52,440 INFO L137 encePairwiseOnDemand]: 319/339 looper letters, 64 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2022-11-25 14:47:52,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 347 flow [2022-11-25 14:47:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-11-25 14:47:52,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142576204523107 [2022-11-25 14:47:52,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-11-25 14:47:52,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-11-25 14:47:52,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:52,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-11-25 14:47:52,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 14:47:52,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:52,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:52,448 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 153 flow. Second operand 3 states and 523 transitions. [2022-11-25 14:47:52,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 347 flow [2022-11-25 14:47:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 339 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-25 14:47:52,457 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 187 flow [2022-11-25 14:47:52,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-11-25 14:47:52,459 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2022-11-25 14:47:52,459 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 187 flow [2022-11-25 14:47:52,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 14:47:52,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:52,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:47:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 14:47:52,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1453320637, now seen corresponding path program 1 times [2022-11-25 14:47:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:52,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395718874] [2022-11-25 14:47:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:52,537 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 14:47:52,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:52,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395718874] [2022-11-25 14:47:52,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395718874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:52,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:52,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:47:52,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476972741] [2022-11-25 14:47:52,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:52,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:52,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:52,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:52,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 339 [2022-11-25 14:47:52,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 14:47:52,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:52,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 339 [2022-11-25 14:47:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:54,071 INFO L130 PetriNetUnfolder]: 7848/11888 cut-off events. [2022-11-25 14:47:54,072 INFO L131 PetriNetUnfolder]: For 1687/2709 co-relation queries the response was YES. [2022-11-25 14:47:54,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25310 conditions, 11888 events. 7848/11888 cut-off events. For 1687/2709 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 80723 event pairs, 3529 based on Foata normal form. 14/8714 useless extension candidates. Maximal degree in co-relation 21154. Up to 6038 conditions per place. [2022-11-25 14:47:54,153 INFO L137 encePairwiseOnDemand]: 335/339 looper letters, 59 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2022-11-25 14:47:54,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 387 flow [2022-11-25 14:47:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-11-25 14:47:54,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5172074729596854 [2022-11-25 14:47:54,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-11-25 14:47:54,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-11-25 14:47:54,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:54,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-11-25 14:47:54,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 14:47:54,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:54,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:54,161 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 187 flow. Second operand 3 states and 526 transitions. [2022-11-25 14:47:54,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 387 flow [2022-11-25 14:47:54,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 14:47:54,165 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 198 flow [2022-11-25 14:47:54,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2022-11-25 14:47:54,166 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-11-25 14:47:54,166 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 198 flow [2022-11-25 14:47:54,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 14:47:54,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:54,167 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:47:54,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 14:47:54,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2103267950, now seen corresponding path program 1 times [2022-11-25 14:47:54,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:54,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313295442] [2022-11-25 14:47:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 14:47:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:54,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313295442] [2022-11-25 14:47:54,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313295442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:54,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:54,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 14:47:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036812635] [2022-11-25 14:47:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:54,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:54,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 339 [2022-11-25 14:47:54,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 14:47:54,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:54,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 339 [2022-11-25 14:47:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:55,596 INFO L130 PetriNetUnfolder]: 7247/11218 cut-off events. [2022-11-25 14:47:55,597 INFO L131 PetriNetUnfolder]: For 2572/3688 co-relation queries the response was YES. [2022-11-25 14:47:55,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 11218 events. 7247/11218 cut-off events. For 2572/3688 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 79396 event pairs, 3027 based on Foata normal form. 236/9109 useless extension candidates. Maximal degree in co-relation 12980. Up to 5369 conditions per place. [2022-11-25 14:47:55,685 INFO L137 encePairwiseOnDemand]: 336/339 looper letters, 60 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-11-25 14:47:55,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 389 flow [2022-11-25 14:47:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-25 14:47:55,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511307767944936 [2022-11-25 14:47:55,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-25 14:47:55,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-25 14:47:55,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:55,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-25 14:47:55,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 14:47:55,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:55,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:55,694 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 198 flow. Second operand 3 states and 520 transitions. [2022-11-25 14:47:55,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 389 flow [2022-11-25 14:47:55,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 385 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 14:47:55,698 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 193 flow [2022-11-25 14:47:55,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-11-25 14:47:55,700 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-11-25 14:47:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 193 flow [2022-11-25 14:47:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 14:47:55,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:55,701 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:47:55,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 14:47:55,702 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -248669782, now seen corresponding path program 1 times [2022-11-25 14:47:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:55,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105485969] [2022-11-25 14:47:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 14:47:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:55,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105485969] [2022-11-25 14:47:55,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105485969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:55,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:55,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:47:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523908547] [2022-11-25 14:47:55,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:55,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:47:55,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:55,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:47:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:47:55,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 339 [2022-11-25 14:47:55,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 14:47:55,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:55,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 339 [2022-11-25 14:47:55,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:57,378 INFO L130 PetriNetUnfolder]: 7753/12170 cut-off events. [2022-11-25 14:47:57,378 INFO L131 PetriNetUnfolder]: For 2665/3399 co-relation queries the response was YES. [2022-11-25 14:47:57,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26207 conditions, 12170 events. 7753/12170 cut-off events. For 2665/3399 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 89085 event pairs, 3547 based on Foata normal form. 24/10026 useless extension candidates. Maximal degree in co-relation 13143. Up to 6080 conditions per place. [2022-11-25 14:47:57,474 INFO L137 encePairwiseOnDemand]: 335/339 looper letters, 59 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-25 14:47:57,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 387 flow [2022-11-25 14:47:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:47:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:47:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-25 14:47:57,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511307767944936 [2022-11-25 14:47:57,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-25 14:47:57,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-25 14:47:57,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:57,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-25 14:47:57,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 14:47:57,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:57,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 14:47:57,482 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 193 flow. Second operand 3 states and 520 transitions. [2022-11-25 14:47:57,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 387 flow [2022-11-25 14:47:57,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 14:47:57,488 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 199 flow [2022-11-25 14:47:57,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2022-11-25 14:47:57,491 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2022-11-25 14:47:57,491 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 199 flow [2022-11-25 14:47:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 14:47:57,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:57,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:47:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 14:47:57,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 182854473, now seen corresponding path program 1 times [2022-11-25 14:47:57,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:57,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856302339] [2022-11-25 14:47:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:47:57,566 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 14:47:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:47:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856302339] [2022-11-25 14:47:57,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856302339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:47:57,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:47:57,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:47:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320533311] [2022-11-25 14:47:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:47:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 14:47:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:47:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 14:47:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 14:47:57,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 339 [2022-11-25 14:47:57,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 14:47:57,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:47:57,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 339 [2022-11-25 14:47:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:47:59,654 INFO L130 PetriNetUnfolder]: 13533/19599 cut-off events. [2022-11-25 14:47:59,654 INFO L131 PetriNetUnfolder]: For 5736/5736 co-relation queries the response was YES. [2022-11-25 14:47:59,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46239 conditions, 19599 events. 13533/19599 cut-off events. For 5736/5736 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 137683 event pairs, 2515 based on Foata normal form. 0/17180 useless extension candidates. Maximal degree in co-relation 46056. Up to 9710 conditions per place. [2022-11-25 14:47:59,871 INFO L137 encePairwiseOnDemand]: 331/339 looper letters, 106 selfloop transitions, 10 changer transitions 0/136 dead transitions. [2022-11-25 14:47:59,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 650 flow [2022-11-25 14:47:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 14:47:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 14:47:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-25 14:47:59,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790560471976401 [2022-11-25 14:47:59,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-25 14:47:59,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-25 14:47:59,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:47:59,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-25 14:47:59,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 14:47:59,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states 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 14:47:59,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states 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 14:47:59,887 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 199 flow. Second operand 5 states and 812 transitions. [2022-11-25 14:47:59,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 650 flow [2022-11-25 14:47:59,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 14:47:59,894 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 245 flow [2022-11-25 14:47:59,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2022-11-25 14:47:59,895 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2022-11-25 14:47:59,895 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 245 flow [2022-11-25 14:47:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 14:47:59,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:47:59,896 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 14:47:59,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 14:47:59,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 14:47:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:47:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1917147580, now seen corresponding path program 1 times [2022-11-25 14:47:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:47:59,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518279484] [2022-11-25 14:47:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:47:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:47:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:59,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 14:47:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 14:47:59,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 14:47:59,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 14:47:59,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 14:47:59,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-25 14:47:59,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-25 14:47:59,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-25 14:47:59,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-25 14:47:59,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-25 14:47:59,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-25 14:47:59,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-25 14:47:59,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-25 14:47:59,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-25 14:47:59,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-25 14:47:59,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-25 14:47:59,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-25 14:47:59,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-25 14:47:59,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-25 14:47:59,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-25 14:47:59,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-25 14:47:59,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-25 14:47:59,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-25 14:47:59,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-25 14:47:59,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-25 14:47:59,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-25 14:47:59,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-25 14:47:59,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-25 14:47:59,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-25 14:47:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 14:47:59,965 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 14:47:59,966 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 14:47:59,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 14:48:00,002 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 14:48:00,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,056 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-11-25 14:48:00,056 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 14:48:00,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 866 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-11-25 14:48:00,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,062 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 14:48:00,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-11-25 14:48:00,110 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-11-25 14:48:00,111 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 14:48:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 866 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-11-25 14:48:00,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-11-25 14:48:05,405 INFO L134 LiptonReduction]: Checked pairs total: 99686 [2022-11-25 14:48:05,405 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-11-25 14:48:05,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 14:48:05,408 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;@16c92c7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 14:48:05,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 14:48:05,410 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-25 14:48:05,410 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 14:48:05,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:48:05,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 14:48:05,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 14:48:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:48:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1519998261, now seen corresponding path program 1 times [2022-11-25 14:48:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:48:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074640553] [2022-11-25 14:48:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:48:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:48:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:48:05,442 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 14:48:05,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:48:05,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074640553] [2022-11-25 14:48:05,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074640553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:48:05,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:48:05,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 14:48:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916565750] [2022-11-25 14:48:05,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:48:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:48:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:48:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:48:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:48:05,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 413 [2022-11-25 14:48:05,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 14:48:05,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:48:05,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 413 [2022-11-25 14:48:05,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:48:16,921 INFO L130 PetriNetUnfolder]: 102389/132565 cut-off events. [2022-11-25 14:48:16,921 INFO L131 PetriNetUnfolder]: For 13703/13703 co-relation queries the response was YES. [2022-11-25 14:48:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269021 conditions, 132565 events. 102389/132565 cut-off events. For 13703/13703 co-relation queries the response was YES. Maximal size of possible extension queue 8249. Compared 880990 event pairs, 37129 based on Foata normal form. 7806/110691 useless extension candidates. Maximal degree in co-relation 52251. Up to 110743 conditions per place. [2022-11-25 14:48:17,600 INFO L137 encePairwiseOnDemand]: 387/413 looper letters, 81 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2022-11-25 14:48:17,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 455 flow [2022-11-25 14:48:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:48:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:48:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2022-11-25 14:48:17,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-11-25 14:48:17,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2022-11-25 14:48:17,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2022-11-25 14:48:17,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:48:17,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2022-11-25 14:48:17,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 14:48:17,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 14:48:17,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 14:48:17,610 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 204 flow. Second operand 3 states and 649 transitions. [2022-11-25 14:48:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 455 flow [2022-11-25 14:48:17,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 115 transitions, 437 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-25 14:48:17,621 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 245 flow [2022-11-25 14:48:17,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2022-11-25 14:48:17,622 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2022-11-25 14:48:17,622 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 245 flow [2022-11-25 14:48:17,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 14:48:17,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:48:17,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:48:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 14:48:17,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 14:48:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:48:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 421227561, now seen corresponding path program 1 times [2022-11-25 14:48:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:48:17,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607015493] [2022-11-25 14:48:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:48:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:48:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:48:17,676 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 14:48:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:48:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607015493] [2022-11-25 14:48:17,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607015493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:48:17,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:48:17,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:48:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502683740] [2022-11-25 14:48:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:48:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:48:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:48:17,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:48:17,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:48:17,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2022-11-25 14:48:17,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 14:48:17,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:48:17,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2022-11-25 14:48:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 14:48:28,911 INFO L130 PetriNetUnfolder]: 85427/122987 cut-off events. [2022-11-25 14:48:28,911 INFO L131 PetriNetUnfolder]: For 19522/46404 co-relation queries the response was YES. [2022-11-25 14:48:29,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262468 conditions, 122987 events. 85427/122987 cut-off events. For 19522/46404 co-relation queries the response was YES. Maximal size of possible extension queue 7093. Compared 1039845 event pairs, 36614 based on Foata normal form. 374/88770 useless extension candidates. Maximal degree in co-relation 129834. Up to 56097 conditions per place. [2022-11-25 14:48:29,772 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 74 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2022-11-25 14:48:29,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 493 flow [2022-11-25 14:48:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 14:48:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 14:48:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-11-25 14:48:29,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5246166263115416 [2022-11-25 14:48:29,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-11-25 14:48:29,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-11-25 14:48:29,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 14:48:29,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-11-25 14:48:29,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states 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 14:48:29,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 14:48:29,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 14:48:29,782 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 245 flow. Second operand 3 states and 650 transitions. [2022-11-25 14:48:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 493 flow [2022-11-25 14:48:29,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 14:48:29,790 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 250 flow [2022-11-25 14:48:29,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2022-11-25 14:48:29,791 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2022-11-25 14:48:29,791 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 250 flow [2022-11-25 14:48:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 14:48:29,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 14:48:29,792 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 14:48:29,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 14:48:29,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 14:48:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 14:48:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash 907691350, now seen corresponding path program 1 times [2022-11-25 14:48:29,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 14:48:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193311896] [2022-11-25 14:48:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 14:48:29,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 14:48:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 14:48:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 14:48:29,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 14:48:29,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193311896] [2022-11-25 14:48:29,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193311896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 14:48:29,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 14:48:29,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 14:48:29,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500848745] [2022-11-25 14:48:29,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 14:48:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 14:48:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 14:48:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 14:48:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 14:48:29,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2022-11-25 14:48:29,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 14:48:29,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 14:48:29,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2022-11-25 14:48:29,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand