./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro --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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- 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-8393723 [2022-11-18 18:33:54,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:33:54,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:33:54,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:33:54,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:33:54,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:33:54,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:33:54,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:33:54,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:33:54,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:33:54,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:33:54,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:33:54,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:33:54,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:33:54,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:33:54,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:33:54,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:33:54,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:33:54,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:33:54,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:33:54,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:33:54,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:33:54,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:33:54,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:33:54,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:33:54,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:33:54,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:33:54,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:33:54,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:33:54,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:33:54,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:33:54,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:33:54,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:33:54,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:33:54,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:33:54,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:33:54,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:33:54,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:33:54,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:33:54,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:33:55,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:33:55,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:33:55,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:33:55,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:33:55,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:33:55,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:33:55,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:33:55,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:33:55,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:33:55,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:33:55,026 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:33:55,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:33:55,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:33:55,027 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:33:55,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:33:55,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:33:55,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:33:55,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:33:55,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:33:55,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:33:55,028 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:33:55,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:33:55,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:33:55,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:33:55,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:33:55,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:33:55,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:33:55,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:33:55,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:33:55,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:33:55,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:33:55,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:33:55,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:33:55,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:33:55,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:33:55,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:33:55,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:33:55,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2022-11-18 18:33:55,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:33:55,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:33:55,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:33:55,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:33:55,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:33:55,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-11-18 18:33:55,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/data/f37b97740/02849e3182c84f86ad89129a3a7dbb2e/FLAG2e7e7316f [2022-11-18 18:33:56,022 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:33:56,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2022-11-18 18:33:56,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/data/f37b97740/02849e3182c84f86ad89129a3a7dbb2e/FLAG2e7e7316f [2022-11-18 18:33:56,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/data/f37b97740/02849e3182c84f86ad89129a3a7dbb2e [2022-11-18 18:33:56,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:33:56,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:33:56,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:33:56,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:33:56,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:33:56,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:56,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6706534f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56, skipping insertion in model container [2022-11-18 18:33:56,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:56,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:33:56,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:33:56,845 WARN L234 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_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-11-18 18:33:56,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:33:56,866 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:33:56,918 WARN L234 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_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i[30540,30553] [2022-11-18 18:33:56,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:33:56,959 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:33:56,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56 WrapperNode [2022-11-18 18:33:56,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:33:56,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:33:56,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:33:56,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:33:56,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:56,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,021 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2022-11-18 18:33:57,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:33:57,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:33:57,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:33:57,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:33:57,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:33:57,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:33:57,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:33:57,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:33:57,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (1/1) ... [2022-11-18 18:33:57,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:33:57,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:57,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:33:57,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c59a855-211b-4ae2-ad1d-d6396bd2fcca/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:33:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:33:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 18:33:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 18:33:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:33:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:33:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:33:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:33:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:33:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:33:57,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:33:57,166 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:33:57,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:33:57,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:33:57,625 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:33:57,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:33:57,669 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:33:57,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:33:57 BoogieIcfgContainer [2022-11-18 18:33:57,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:33:57,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:33:57,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:33:57,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:33:57,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:33:56" (1/3) ... [2022-11-18 18:33:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4270480a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:33:57, skipping insertion in model container [2022-11-18 18:33:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:33:56" (2/3) ... [2022-11-18 18:33:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4270480a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:33:57, skipping insertion in model container [2022-11-18 18:33:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:33:57" (3/3) ... [2022-11-18 18:33:57,683 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2022-11-18 18:33:57,692 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:33:57,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:33:57,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 18:33:57,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:33:57,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:33:57,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 189 flow [2022-11-18 18:33:57,939 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-11-18 18:33:57,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:33:57,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2022-11-18 18:33:57,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 92 transitions, 189 flow [2022-11-18 18:33:57,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 189 flow [2022-11-18 18:33:57,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:33:57,985 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:33:57,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 18:33:58,014 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2022-11-18 18:33:58,014 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:33:58,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:58,015 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:58,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 18:33:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1200462076, now seen corresponding path program 1 times [2022-11-18 18:33:58,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:58,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828150242] [2022-11-18 18:33:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:33:58,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:33:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:33:58,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:33:58,197 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:33:58,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-18 18:33:58,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-11-18 18:33:58,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-11-18 18:33:58,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-11-18 18:33:58,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-11-18 18:33:58,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-11-18 18:33:58,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-11-18 18:33:58,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-11-18 18:33:58,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-11-18 18:33:58,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:33:58,207 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 18:33:58,211 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:33:58,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:33:58,278 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:33:58,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 306 flow [2022-11-18 18:33:58,371 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2022-11-18 18:33:58,371 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:33:58,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 17/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2022-11-18 18:33:58,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 147 transitions, 306 flow [2022-11-18 18:33:58,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 147 transitions, 306 flow [2022-11-18 18:33:58,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:33:58,386 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:33:58,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 18:33:58,410 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-18 18:33:58,410 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:33:58,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:58,411 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:58,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 18:33:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1741902510, now seen corresponding path program 1 times [2022-11-18 18:33:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:58,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976918396] [2022-11-18 18:33:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:33:58,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:33:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:33:58,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:33:58,560 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:33:58,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 18:33:58,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 18:33:58,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 18:33:58,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 18:33:58,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 18:33:58,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 18:33:58,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 18:33:58,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 18:33:58,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 18:33:58,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 18:33:58,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 18:33:58,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 18:33:58,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 18:33:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:33:58,568 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 18:33:58,569 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:33:58,570 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:33:58,652 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:33:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 202 transitions, 425 flow [2022-11-18 18:33:58,716 INFO L130 PetriNetUnfolder]: 25/239 cut-off events. [2022-11-18 18:33:58,716 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 18:33:58,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 25/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 615 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-18 18:33:58,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 202 transitions, 425 flow [2022-11-18 18:33:58,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 202 transitions, 425 flow [2022-11-18 18:33:58,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:33:58,725 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:33:58,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 18:33:58,739 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2022-11-18 18:33:58,740 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:33:58,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:58,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:58,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:33:58,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash 980378243, now seen corresponding path program 1 times [2022-11-18 18:33:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:58,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114357628] [2022-11-18 18:33:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:59,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:59,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114357628] [2022-11-18 18:33:59,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114357628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:59,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:33:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876004115] [2022-11-18 18:33:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:33:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:33:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:33:59,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 202 [2022-11-18 18:33:59,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 202 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 164.57142857142858) internal successors, (1152), 7 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:59,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:33:59,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 202 [2022-11-18 18:33:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:00,010 INFO L130 PetriNetUnfolder]: 393/1308 cut-off events. [2022-11-18 18:34:00,011 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2022-11-18 18:34:00,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 1308 events. 393/1308 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9455 event pairs, 28 based on Foata normal form. 607/1692 useless extension candidates. Maximal degree in co-relation 952. Up to 279 conditions per place. [2022-11-18 18:34:00,032 INFO L137 encePairwiseOnDemand]: 185/202 looper letters, 49 selfloop transitions, 5 changer transitions 0/212 dead transitions. [2022-11-18 18:34:00,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 212 transitions, 613 flow [2022-11-18 18:34:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1247 transitions. [2022-11-18 18:34:00,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818953323903819 [2022-11-18 18:34:00,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1247 transitions. [2022-11-18 18:34:00,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1247 transitions. [2022-11-18 18:34:00,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:00,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1247 transitions. [2022-11-18 18:34:00,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,082 INFO L175 Difference]: Start difference. First operand has 187 places, 202 transitions, 425 flow. Second operand 7 states and 1247 transitions. [2022-11-18 18:34:00,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 212 transitions, 613 flow [2022-11-18 18:34:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 212 transitions, 597 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-18 18:34:00,099 INFO L231 Difference]: Finished difference. Result has 183 places, 182 transitions, 389 flow [2022-11-18 18:34:00,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=183, PETRI_TRANSITIONS=182} [2022-11-18 18:34:00,105 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, -4 predicate places. [2022-11-18 18:34:00,105 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 182 transitions, 389 flow [2022-11-18 18:34:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.57142857142858) internal successors, (1152), 7 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:00,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:00,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:34:00,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:34:00,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash 326955190, now seen corresponding path program 1 times [2022-11-18 18:34:00,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:00,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105456983] [2022-11-18 18:34:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:00,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105456983] [2022-11-18 18:34:00,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105456983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:00,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:00,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172185126] [2022-11-18 18:34:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:00,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 202 [2022-11-18 18:34:00,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 182 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:00,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 202 [2022-11-18 18:34:00,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:00,650 INFO L130 PetriNetUnfolder]: 358/1573 cut-off events. [2022-11-18 18:34:00,650 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-18 18:34:00,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1573 events. 358/1573 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11817 event pairs, 18 based on Foata normal form. 0/1317 useless extension candidates. Maximal degree in co-relation 1525. Up to 248 conditions per place. [2022-11-18 18:34:00,670 INFO L137 encePairwiseOnDemand]: 196/202 looper letters, 46 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-18 18:34:00,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 599 flow [2022-11-18 18:34:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1207 transitions. [2022-11-18 18:34:00,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8536067892503536 [2022-11-18 18:34:00,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1207 transitions. [2022-11-18 18:34:00,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1207 transitions. [2022-11-18 18:34:00,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:00,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1207 transitions. [2022-11-18 18:34:00,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 172.42857142857142) internal successors, (1207), 7 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 202.0) internal successors, (1616), 8 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,683 INFO L175 Difference]: Start difference. First operand has 183 places, 182 transitions, 389 flow. Second operand 7 states and 1207 transitions. [2022-11-18 18:34:00,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 599 flow [2022-11-18 18:34:00,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 590 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:00,693 INFO L231 Difference]: Finished difference. Result has 183 places, 181 transitions, 388 flow [2022-11-18 18:34:00,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2022-11-18 18:34:00,695 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, -4 predicate places. [2022-11-18 18:34:00,696 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 388 flow [2022-11-18 18:34:00,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:00,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:00,697 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:34:00,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 18:34:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1194032440, now seen corresponding path program 1 times [2022-11-18 18:34:00,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:00,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286667028] [2022-11-18 18:34:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:00,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:34:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:00,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:34:00,752 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:34:00,752 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 18:34:00,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 18:34:00,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 18:34:00,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 18:34:00,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 18:34:00,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 18:34:00,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 18:34:00,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 18:34:00,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 18:34:00,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 18:34:00,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 18:34:00,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 18:34:00,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 18:34:00,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 18:34:00,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 18:34:00,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 18:34:00,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 18:34:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:34:00,757 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 18:34:00,757 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:34:00,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 18:34:00,801 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:34:00,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 257 transitions, 546 flow [2022-11-18 18:34:00,870 INFO L130 PetriNetUnfolder]: 33/307 cut-off events. [2022-11-18 18:34:00,870 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 18:34:00,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 33/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 930 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-11-18 18:34:00,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 257 transitions, 546 flow [2022-11-18 18:34:00,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 257 transitions, 546 flow [2022-11-18 18:34:00,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:00,882 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:00,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 18:34:00,892 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2022-11-18 18:34:00,892 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:34:00,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:00,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:00,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:34:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1506449444, now seen corresponding path program 1 times [2022-11-18 18:34:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:00,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414562711] [2022-11-18 18:34:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:00,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:01,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:01,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414562711] [2022-11-18 18:34:01,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414562711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:01,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:01,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562743149] [2022-11-18 18:34:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:01,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 257 [2022-11-18 18:34:01,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 257 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 212.57142857142858) internal successors, (1488), 7 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:01,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:01,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 257 [2022-11-18 18:34:01,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:02,436 INFO L130 PetriNetUnfolder]: 1701/4813 cut-off events. [2022-11-18 18:34:02,436 INFO L131 PetriNetUnfolder]: For 2101/2101 co-relation queries the response was YES. [2022-11-18 18:34:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 4813 events. 1701/4813 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 44497 event pairs, 223 based on Foata normal form. 2557/6637 useless extension candidates. Maximal degree in co-relation 3384. Up to 1089 conditions per place. [2022-11-18 18:34:02,530 INFO L137 encePairwiseOnDemand]: 237/257 looper letters, 67 selfloop transitions, 5 changer transitions 0/278 dead transitions. [2022-11-18 18:34:02,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 278 transitions, 837 flow [2022-11-18 18:34:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1619 transitions. [2022-11-18 18:34:02,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8999444135630906 [2022-11-18 18:34:02,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1619 transitions. [2022-11-18 18:34:02,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1619 transitions. [2022-11-18 18:34:02,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:02,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1619 transitions. [2022-11-18 18:34:02,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.28571428571428) internal successors, (1619), 7 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:02,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:02,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:02,546 INFO L175 Difference]: Start difference. First operand has 237 places, 257 transitions, 546 flow. Second operand 7 states and 1619 transitions. [2022-11-18 18:34:02,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 278 transitions, 837 flow [2022-11-18 18:34:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 278 transitions, 795 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-11-18 18:34:02,559 INFO L231 Difference]: Finished difference. Result has 232 places, 233 transitions, 496 flow [2022-11-18 18:34:02,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=232, PETRI_TRANSITIONS=233} [2022-11-18 18:34:02,563 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-18 18:34:02,563 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 233 transitions, 496 flow [2022-11-18 18:34:02,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.57142857142858) internal successors, (1488), 7 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:02,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:02,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:34:02,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:34:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -544706452, now seen corresponding path program 1 times [2022-11-18 18:34:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139256399] [2022-11-18 18:34:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:02,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:02,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139256399] [2022-11-18 18:34:02,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139256399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:02,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:02,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682063860] [2022-11-18 18:34:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:02,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 257 [2022-11-18 18:34:02,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 233 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:02,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:02,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 257 [2022-11-18 18:34:02,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:04,046 INFO L130 PetriNetUnfolder]: 1485/5047 cut-off events. [2022-11-18 18:34:04,046 INFO L131 PetriNetUnfolder]: For 666/666 co-relation queries the response was YES. [2022-11-18 18:34:04,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7583 conditions, 5047 events. 1485/5047 cut-off events. For 666/666 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 47481 event pairs, 673 based on Foata normal form. 0/4269 useless extension candidates. Maximal degree in co-relation 5856. Up to 968 conditions per place. [2022-11-18 18:34:04,200 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 64 selfloop transitions, 5 changer transitions 0/277 dead transitions. [2022-11-18 18:34:04,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 277 transitions, 797 flow [2022-11-18 18:34:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1561 transitions. [2022-11-18 18:34:04,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.867704280155642 [2022-11-18 18:34:04,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1561 transitions. [2022-11-18 18:34:04,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1561 transitions. [2022-11-18 18:34:04,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:04,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1561 transitions. [2022-11-18 18:34:04,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,215 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,215 INFO L175 Difference]: Start difference. First operand has 232 places, 233 transitions, 496 flow. Second operand 7 states and 1561 transitions. [2022-11-18 18:34:04,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 277 transitions, 797 flow [2022-11-18 18:34:04,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 277 transitions, 788 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:04,221 INFO L231 Difference]: Finished difference. Result has 232 places, 232 transitions, 495 flow [2022-11-18 18:34:04,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=232, PETRI_TRANSITIONS=232} [2022-11-18 18:34:04,223 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-18 18:34:04,223 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 232 transitions, 495 flow [2022-11-18 18:34:04,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:04,229 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:04,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:34:04,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:34:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:04,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1384828834, now seen corresponding path program 1 times [2022-11-18 18:34:04,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:04,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287647252] [2022-11-18 18:34:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:04,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:04,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287647252] [2022-11-18 18:34:04,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287647252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:04,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:04,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545731381] [2022-11-18 18:34:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:04,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 257 [2022-11-18 18:34:04,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 232 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:04,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 257 [2022-11-18 18:34:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:05,775 INFO L130 PetriNetUnfolder]: 1710/4853 cut-off events. [2022-11-18 18:34:05,775 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-18 18:34:05,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7649 conditions, 4853 events. 1710/4853 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 44528 event pairs, 282 based on Foata normal form. 0/4106 useless extension candidates. Maximal degree in co-relation 7590. Up to 1071 conditions per place. [2022-11-18 18:34:05,866 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 62 selfloop transitions, 5 changer transitions 0/271 dead transitions. [2022-11-18 18:34:05,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 271 transitions, 757 flow [2022-11-18 18:34:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1545 transitions. [2022-11-18 18:34:05,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588104502501389 [2022-11-18 18:34:05,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1545 transitions. [2022-11-18 18:34:05,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1545 transitions. [2022-11-18 18:34:05,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:05,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1545 transitions. [2022-11-18 18:34:05,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 220.71428571428572) internal successors, (1545), 7 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:05,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:05,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:05,887 INFO L175 Difference]: Start difference. First operand has 232 places, 232 transitions, 495 flow. Second operand 7 states and 1545 transitions. [2022-11-18 18:34:05,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 271 transitions, 757 flow [2022-11-18 18:34:05,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 271 transitions, 748 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:05,895 INFO L231 Difference]: Finished difference. Result has 232 places, 231 transitions, 494 flow [2022-11-18 18:34:05,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=232, PETRI_TRANSITIONS=231} [2022-11-18 18:34:05,897 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-18 18:34:05,898 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 231 transitions, 494 flow [2022-11-18 18:34:05,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:05,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:05,899 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:34:05,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:34:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 19980200, now seen corresponding path program 1 times [2022-11-18 18:34:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:05,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565457214] [2022-11-18 18:34:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:06,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565457214] [2022-11-18 18:34:06,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565457214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:06,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:06,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706685522] [2022-11-18 18:34:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:06,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 257 [2022-11-18 18:34:06,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 231 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:06,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:06,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 257 [2022-11-18 18:34:06,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:06,945 INFO L130 PetriNetUnfolder]: 1372/3796 cut-off events. [2022-11-18 18:34:06,945 INFO L131 PetriNetUnfolder]: For 628/628 co-relation queries the response was YES. [2022-11-18 18:34:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6312 conditions, 3796 events. 1372/3796 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 33001 event pairs, 44 based on Foata normal form. 0/3278 useless extension candidates. Maximal degree in co-relation 6257. Up to 952 conditions per place. [2022-11-18 18:34:07,005 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 59 selfloop transitions, 5 changer transitions 0/270 dead transitions. [2022-11-18 18:34:07,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 270 transitions, 750 flow [2022-11-18 18:34:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1556 transitions. [2022-11-18 18:34:07,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8649249583101724 [2022-11-18 18:34:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1556 transitions. [2022-11-18 18:34:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1556 transitions. [2022-11-18 18:34:07,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:07,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1556 transitions. [2022-11-18 18:34:07,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 222.28571428571428) internal successors, (1556), 7 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:07,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:07,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:07,018 INFO L175 Difference]: Start difference. First operand has 232 places, 231 transitions, 494 flow. Second operand 7 states and 1556 transitions. [2022-11-18 18:34:07,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 270 transitions, 750 flow [2022-11-18 18:34:07,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 270 transitions, 741 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:07,025 INFO L231 Difference]: Finished difference. Result has 232 places, 230 transitions, 493 flow [2022-11-18 18:34:07,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=493, PETRI_PLACES=232, PETRI_TRANSITIONS=230} [2022-11-18 18:34:07,026 INFO L288 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2022-11-18 18:34:07,027 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 230 transitions, 493 flow [2022-11-18 18:34:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:07,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:07,028 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:07,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:34:07,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 18:34:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1691069597, now seen corresponding path program 1 times [2022-11-18 18:34:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:07,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495591727] [2022-11-18 18:34:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:07,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:34:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:07,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:34:07,064 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:34:07,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 18:34:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 18:34:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 18:34:07,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 18:34:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 18:34:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 18:34:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 18:34:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 18:34:07,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 18:34:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 18:34:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 18:34:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 18:34:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 18:34:07,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 18:34:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 18:34:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 18:34:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 18:34:07,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 18:34:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 18:34:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 18:34:07,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 18:34:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:34:07,069 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:34:07,070 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:34:07,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 18:34:07,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:34:07,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 312 transitions, 669 flow [2022-11-18 18:34:07,313 INFO L130 PetriNetUnfolder]: 41/375 cut-off events. [2022-11-18 18:34:07,313 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:34:07,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 375 events. 41/375 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1238 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 320. Up to 12 conditions per place. [2022-11-18 18:34:07,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 312 transitions, 669 flow [2022-11-18 18:34:07,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 312 transitions, 669 flow [2022-11-18 18:34:07,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:07,323 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:07,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 18:34:07,330 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2022-11-18 18:34:07,331 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:34:07,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:07,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:07,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 557389040, now seen corresponding path program 1 times [2022-11-18 18:34:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:07,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130099646] [2022-11-18 18:34:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:07,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130099646] [2022-11-18 18:34:07,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130099646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:07,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:07,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:07,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790519068] [2022-11-18 18:34:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:07,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:07,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:07,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 312 [2022-11-18 18:34:07,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 312 transitions, 669 flow. Second operand has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:07,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:07,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 312 [2022-11-18 18:34:07,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:11,547 INFO L130 PetriNetUnfolder]: 6714/17208 cut-off events. [2022-11-18 18:34:11,547 INFO L131 PetriNetUnfolder]: For 9819/9819 co-relation queries the response was YES. [2022-11-18 18:34:11,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29368 conditions, 17208 events. 6714/17208 cut-off events. For 9819/9819 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 185318 event pairs, 1432 based on Foata normal form. 9967/24773 useless extension candidates. Maximal degree in co-relation 13080. Up to 4005 conditions per place. [2022-11-18 18:34:12,057 INFO L137 encePairwiseOnDemand]: 289/312 looper letters, 85 selfloop transitions, 5 changer transitions 0/344 dead transitions. [2022-11-18 18:34:12,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 344 transitions, 1073 flow [2022-11-18 18:34:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-11-18 18:34:12,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116300366300366 [2022-11-18 18:34:12,078 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-11-18 18:34:12,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-11-18 18:34:12,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:12,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-11-18 18:34:12,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,090 INFO L175 Difference]: Start difference. First operand has 287 places, 312 transitions, 669 flow. Second operand 7 states and 1991 transitions. [2022-11-18 18:34:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 344 transitions, 1073 flow [2022-11-18 18:34:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 344 transitions, 993 flow, removed 40 selfloop flow, removed 0 redundant places. [2022-11-18 18:34:12,100 INFO L231 Difference]: Finished difference. Result has 281 places, 284 transitions, 603 flow [2022-11-18 18:34:12,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=603, PETRI_PLACES=281, PETRI_TRANSITIONS=284} [2022-11-18 18:34:12,102 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -6 predicate places. [2022-11-18 18:34:12,102 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 284 transitions, 603 flow [2022-11-18 18:34:12,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:12,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:34:12,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 99192354, now seen corresponding path program 1 times [2022-11-18 18:34:12,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:12,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830090544] [2022-11-18 18:34:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830090544] [2022-11-18 18:34:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830090544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:12,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:12,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333475306] [2022-11-18 18:34:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:12,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 312 [2022-11-18 18:34:12,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 284 transitions, 603 flow. Second operand has 6 states, 6 states have (on average 262.8333333333333) internal successors, (1577), 6 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:12,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 312 [2022-11-18 18:34:12,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:15,049 INFO L130 PetriNetUnfolder]: 5388/13425 cut-off events. [2022-11-18 18:34:15,050 INFO L131 PetriNetUnfolder]: For 2043/2043 co-relation queries the response was YES. [2022-11-18 18:34:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22422 conditions, 13425 events. 5388/13425 cut-off events. For 2043/2043 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 134973 event pairs, 2360 based on Foata normal form. 0/11739 useless extension candidates. Maximal degree in co-relation 22236. Up to 3560 conditions per place. [2022-11-18 18:34:15,529 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 82 selfloop transitions, 5 changer transitions 0/343 dead transitions. [2022-11-18 18:34:15,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 343 transitions, 995 flow [2022-11-18 18:34:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-11-18 18:34:15,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768315018315018 [2022-11-18 18:34:15,534 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-11-18 18:34:15,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-11-18 18:34:15,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:15,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-11-18 18:34:15,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,560 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,560 INFO L175 Difference]: Start difference. First operand has 281 places, 284 transitions, 603 flow. Second operand 7 states and 1915 transitions. [2022-11-18 18:34:15,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 343 transitions, 995 flow [2022-11-18 18:34:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 343 transitions, 986 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:15,573 INFO L231 Difference]: Finished difference. Result has 281 places, 283 transitions, 602 flow [2022-11-18 18:34:15,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=281, PETRI_TRANSITIONS=283} [2022-11-18 18:34:15,576 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -6 predicate places. [2022-11-18 18:34:15,576 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 283 transitions, 602 flow [2022-11-18 18:34:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.8333333333333) internal successors, (1577), 6 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:15,578 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:15,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:34:15,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -769950788, now seen corresponding path program 1 times [2022-11-18 18:34:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:15,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598709883] [2022-11-18 18:34:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:15,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:15,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598709883] [2022-11-18 18:34:15,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598709883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:15,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:15,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:15,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714976668] [2022-11-18 18:34:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:15,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:15,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:15,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:15,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 312 [2022-11-18 18:34:15,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 283 transitions, 602 flow. Second operand has 7 states, 7 states have (on average 260.7142857142857) internal successors, (1825), 7 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:15,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 312 [2022-11-18 18:34:15,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:19,030 INFO L130 PetriNetUnfolder]: 6597/16742 cut-off events. [2022-11-18 18:34:19,030 INFO L131 PetriNetUnfolder]: For 2116/2116 co-relation queries the response was YES. [2022-11-18 18:34:19,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26784 conditions, 16742 events. 6597/16742 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 177616 event pairs, 3049 based on Foata normal form. 0/14353 useless extension candidates. Maximal degree in co-relation 26724. Up to 3987 conditions per place. [2022-11-18 18:34:19,265 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 80 selfloop transitions, 5 changer transitions 0/337 dead transitions. [2022-11-18 18:34:19,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 337 transitions, 955 flow [2022-11-18 18:34:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1899 transitions. [2022-11-18 18:34:19,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695054945054945 [2022-11-18 18:34:19,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1899 transitions. [2022-11-18 18:34:19,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1899 transitions. [2022-11-18 18:34:19,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:19,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1899 transitions. [2022-11-18 18:34:19,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 271.2857142857143) internal successors, (1899), 7 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:19,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:19,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:19,282 INFO L175 Difference]: Start difference. First operand has 281 places, 283 transitions, 602 flow. Second operand 7 states and 1899 transitions. [2022-11-18 18:34:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 337 transitions, 955 flow [2022-11-18 18:34:19,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 337 transitions, 946 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:19,288 INFO L231 Difference]: Finished difference. Result has 281 places, 282 transitions, 601 flow [2022-11-18 18:34:19,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=281, PETRI_TRANSITIONS=282} [2022-11-18 18:34:19,290 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -6 predicate places. [2022-11-18 18:34:19,290 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 282 transitions, 601 flow [2022-11-18 18:34:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.7142857142857) internal successors, (1825), 7 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:19,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:19,291 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:34:19,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1901330592, now seen corresponding path program 1 times [2022-11-18 18:34:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750211000] [2022-11-18 18:34:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:19,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750211000] [2022-11-18 18:34:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750211000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:19,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:19,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875037191] [2022-11-18 18:34:19,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:19,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 312 [2022-11-18 18:34:19,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 282 transitions, 601 flow. Second operand has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:19,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:19,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 312 [2022-11-18 18:34:19,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:22,850 INFO L130 PetriNetUnfolder]: 5525/14865 cut-off events. [2022-11-18 18:34:22,850 INFO L131 PetriNetUnfolder]: For 2005/2005 co-relation queries the response was YES. [2022-11-18 18:34:22,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23826 conditions, 14865 events. 5525/14865 cut-off events. For 2005/2005 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 158614 event pairs, 410 based on Foata normal form. 0/12752 useless extension candidates. Maximal degree in co-relation 23770. Up to 3544 conditions per place. [2022-11-18 18:34:23,120 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 77 selfloop transitions, 5 changer transitions 0/336 dead transitions. [2022-11-18 18:34:23,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 336 transitions, 948 flow [2022-11-18 18:34:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1910 transitions. [2022-11-18 18:34:23,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8745421245421245 [2022-11-18 18:34:23,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1910 transitions. [2022-11-18 18:34:23,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1910 transitions. [2022-11-18 18:34:23,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:23,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1910 transitions. [2022-11-18 18:34:23,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,138 INFO L175 Difference]: Start difference. First operand has 281 places, 282 transitions, 601 flow. Second operand 7 states and 1910 transitions. [2022-11-18 18:34:23,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 336 transitions, 948 flow [2022-11-18 18:34:23,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 336 transitions, 939 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:23,150 INFO L231 Difference]: Finished difference. Result has 281 places, 281 transitions, 600 flow [2022-11-18 18:34:23,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=281, PETRI_TRANSITIONS=281} [2022-11-18 18:34:23,152 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -6 predicate places. [2022-11-18 18:34:23,152 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 281 transitions, 600 flow [2022-11-18 18:34:23,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:23,153 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:23,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:34:23,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 343715471, now seen corresponding path program 1 times [2022-11-18 18:34:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668463961] [2022-11-18 18:34:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:23,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668463961] [2022-11-18 18:34:23,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668463961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:23,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:23,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:23,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656455282] [2022-11-18 18:34:23,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:23,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:23,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:23,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 312 [2022-11-18 18:34:23,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 281 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:23,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 312 [2022-11-18 18:34:23,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:28,314 INFO L130 PetriNetUnfolder]: 10237/24533 cut-off events. [2022-11-18 18:34:28,315 INFO L131 PetriNetUnfolder]: For 3361/3361 co-relation queries the response was YES. [2022-11-18 18:34:28,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40744 conditions, 24533 events. 10237/24533 cut-off events. For 3361/3361 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 269569 event pairs, 5388 based on Foata normal form. 0/20599 useless extension candidates. Maximal degree in co-relation 37243. Up to 7567 conditions per place. [2022-11-18 18:34:29,218 INFO L137 encePairwiseOnDemand]: 304/312 looper letters, 83 selfloop transitions, 6 changer transitions 0/339 dead transitions. [2022-11-18 18:34:29,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 339 transitions, 974 flow [2022-11-18 18:34:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:34:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1633 transitions. [2022-11-18 18:34:29,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723290598290598 [2022-11-18 18:34:29,222 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1633 transitions. [2022-11-18 18:34:29,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1633 transitions. [2022-11-18 18:34:29,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:29,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1633 transitions. [2022-11-18 18:34:29,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.1666666666667) internal successors, (1633), 6 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:29,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:29,233 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:29,233 INFO L175 Difference]: Start difference. First operand has 281 places, 281 transitions, 600 flow. Second operand 6 states and 1633 transitions. [2022-11-18 18:34:29,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 339 transitions, 974 flow [2022-11-18 18:34:29,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 339 transitions, 965 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:29,241 INFO L231 Difference]: Finished difference. Result has 286 places, 286 transitions, 639 flow [2022-11-18 18:34:29,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=286, PETRI_TRANSITIONS=286} [2022-11-18 18:34:29,243 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, -1 predicate places. [2022-11-18 18:34:29,243 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 286 transitions, 639 flow [2022-11-18 18:34:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:29,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:29,244 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:29,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:34:29,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:29,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:29,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2065246334, now seen corresponding path program 1 times [2022-11-18 18:34:29,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975509389] [2022-11-18 18:34:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:29,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:29,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975509389] [2022-11-18 18:34:29,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975509389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:29,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:29,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:34:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415705545] [2022-11-18 18:34:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:34:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:34:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:34:29,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 312 [2022-11-18 18:34:29,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 286 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 254.125) internal successors, (2033), 8 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:29,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:29,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 312 [2022-11-18 18:34:29,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:35,058 INFO L130 PetriNetUnfolder]: 11009/24136 cut-off events. [2022-11-18 18:34:35,058 INFO L131 PetriNetUnfolder]: For 4810/4810 co-relation queries the response was YES. [2022-11-18 18:34:35,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43931 conditions, 24136 events. 11009/24136 cut-off events. For 4810/4810 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 252499 event pairs, 612 based on Foata normal form. 242/21904 useless extension candidates. Maximal degree in co-relation 37181. Up to 5906 conditions per place. [2022-11-18 18:34:35,526 INFO L137 encePairwiseOnDemand]: 303/312 looper letters, 113 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2022-11-18 18:34:35,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 368 transitions, 1183 flow [2022-11-18 18:34:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:34:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:34:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2388 transitions. [2022-11-18 18:34:35,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2022-11-18 18:34:35,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2388 transitions. [2022-11-18 18:34:35,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2388 transitions. [2022-11-18 18:34:35,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:35,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2388 transitions. [2022-11-18 18:34:35,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 265.3333333333333) internal successors, (2388), 9 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:35,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:35,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:35,547 INFO L175 Difference]: Start difference. First operand has 286 places, 286 transitions, 639 flow. Second operand 9 states and 2388 transitions. [2022-11-18 18:34:35,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 368 transitions, 1183 flow [2022-11-18 18:34:35,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 368 transitions, 1179 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:35,581 INFO L231 Difference]: Finished difference. Result has 291 places, 284 transitions, 645 flow [2022-11-18 18:34:35,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=645, PETRI_PLACES=291, PETRI_TRANSITIONS=284} [2022-11-18 18:34:35,582 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 4 predicate places. [2022-11-18 18:34:35,582 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 284 transitions, 645 flow [2022-11-18 18:34:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 254.125) internal successors, (2033), 8 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:35,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:35,584 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:35,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:34:35,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2053265541, now seen corresponding path program 1 times [2022-11-18 18:34:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:35,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130172254] [2022-11-18 18:34:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:35,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:34:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:35,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130172254] [2022-11-18 18:34:35,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130172254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:35,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339688866] [2022-11-18 18:34:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:35,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:35,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 312 [2022-11-18 18:34:35,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 284 transitions, 645 flow. Second operand has 7 states, 7 states have (on average 260.85714285714283) internal successors, (1826), 7 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:35,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:35,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 312 [2022-11-18 18:34:35,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:39,285 INFO L130 PetriNetUnfolder]: 6323/14425 cut-off events. [2022-11-18 18:34:39,286 INFO L131 PetriNetUnfolder]: For 1988/1988 co-relation queries the response was YES. [2022-11-18 18:34:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24236 conditions, 14425 events. 6323/14425 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 146249 event pairs, 534 based on Foata normal form. 0/12261 useless extension candidates. Maximal degree in co-relation 24171. Up to 3915 conditions per place. [2022-11-18 18:34:39,561 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 75 selfloop transitions, 5 changer transitions 0/333 dead transitions. [2022-11-18 18:34:39,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 333 transitions, 953 flow [2022-11-18 18:34:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1894 transitions. [2022-11-18 18:34:39,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672161172161172 [2022-11-18 18:34:39,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1894 transitions. [2022-11-18 18:34:39,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1894 transitions. [2022-11-18 18:34:39,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:39,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1894 transitions. [2022-11-18 18:34:39,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.57142857142856) internal successors, (1894), 7 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,575 INFO L175 Difference]: Start difference. First operand has 291 places, 284 transitions, 645 flow. Second operand 7 states and 1894 transitions. [2022-11-18 18:34:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 333 transitions, 953 flow [2022-11-18 18:34:39,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 333 transitions, 933 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 18:34:39,582 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 633 flow [2022-11-18 18:34:39,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2022-11-18 18:34:39,583 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 1 predicate places. [2022-11-18 18:34:39,583 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 633 flow [2022-11-18 18:34:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.85714285714283) internal successors, (1826), 7 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:39,584 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:34:39,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:39,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -773276317, now seen corresponding path program 1 times [2022-11-18 18:34:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:39,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157434991] [2022-11-18 18:34:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:34:39,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:39,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157434991] [2022-11-18 18:34:39,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157434991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:39,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:39,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611472819] [2022-11-18 18:34:39,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:39,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:39,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 312 [2022-11-18 18:34:39,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 633 flow. Second operand has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:39,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 312 [2022-11-18 18:34:39,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:44,632 INFO L130 PetriNetUnfolder]: 5799/18355 cut-off events. [2022-11-18 18:34:44,633 INFO L131 PetriNetUnfolder]: For 1893/1893 co-relation queries the response was YES. [2022-11-18 18:34:44,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26973 conditions, 18355 events. 5799/18355 cut-off events. For 1893/1893 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 213853 event pairs, 1140 based on Foata normal form. 0/15601 useless extension candidates. Maximal degree in co-relation 26913. Up to 3480 conditions per place. [2022-11-18 18:34:45,030 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 72 selfloop transitions, 5 changer transitions 0/332 dead transitions. [2022-11-18 18:34:45,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 332 transitions, 935 flow [2022-11-18 18:34:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1905 transitions. [2022-11-18 18:34:45,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8722527472527473 [2022-11-18 18:34:45,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1905 transitions. [2022-11-18 18:34:45,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1905 transitions. [2022-11-18 18:34:45,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:45,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1905 transitions. [2022-11-18 18:34:45,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,047 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,047 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 633 flow. Second operand 7 states and 1905 transitions. [2022-11-18 18:34:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 332 transitions, 935 flow [2022-11-18 18:34:45,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 332 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:45,054 INFO L231 Difference]: Finished difference. Result has 288 places, 282 transitions, 632 flow [2022-11-18 18:34:45,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=288, PETRI_TRANSITIONS=282} [2022-11-18 18:34:45,056 INFO L288 CegarLoopForPetriNet]: 287 programPoint places, 1 predicate places. [2022-11-18 18:34:45,056 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 282 transitions, 632 flow [2022-11-18 18:34:45,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:45,057 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:45,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:34:45,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 18:34:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:45,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1877679120, now seen corresponding path program 1 times [2022-11-18 18:34:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:45,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157466700] [2022-11-18 18:34:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:45,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:45,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:34:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:34:45,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:34:45,091 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:34:45,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-18 18:34:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-18 18:34:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-18 18:34:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-18 18:34:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-18 18:34:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-18 18:34:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-18 18:34:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-18 18:34:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-18 18:34:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-18 18:34:45,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-18 18:34:45,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-18 18:34:45,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-18 18:34:45,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-18 18:34:45,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-18 18:34:45,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-18 18:34:45,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-18 18:34:45,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-18 18:34:45,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-18 18:34:45,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-18 18:34:45,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-18 18:34:45,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-18 18:34:45,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-18 18:34:45,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-18 18:34:45,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-18 18:34:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:34:45,097 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:45,098 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:34:45,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-18 18:34:45,150 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:34:45,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 367 transitions, 794 flow [2022-11-18 18:34:45,243 INFO L130 PetriNetUnfolder]: 49/443 cut-off events. [2022-11-18 18:34:45,243 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-18 18:34:45,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 443 events. 49/443 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1577 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 394. Up to 14 conditions per place. [2022-11-18 18:34:45,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 367 transitions, 794 flow [2022-11-18 18:34:45,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 367 transitions, 794 flow [2022-11-18 18:34:45,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:45,257 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;@370420f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:45,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-18 18:34:45,265 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2022-11-18 18:34:45,265 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:34:45,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:45,266 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:45,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 18:34:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1938500425, now seen corresponding path program 1 times [2022-11-18 18:34:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:45,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970707290] [2022-11-18 18:34:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:45,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:45,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970707290] [2022-11-18 18:34:45,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970707290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:45,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:45,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:45,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459838929] [2022-11-18 18:34:45,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:45,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:45,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:45,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 367 [2022-11-18 18:34:45,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 367 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 308.57142857142856) internal successors, (2160), 7 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:45,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 367 [2022-11-18 18:34:45,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand