./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/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_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/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_df21a384-d1b5-4855-b167-550cd65bb87f/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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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 19:58:35,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:58:35,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:58:35,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:58:35,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:58:35,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:58:35,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:58:35,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:58:35,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:58:35,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:58:35,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:58:35,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:58:35,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:58:35,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:58:35,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:58:35,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:58:35,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:58:35,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:58:35,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:58:35,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:58:35,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:58:35,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:58:35,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:58:35,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:58:35,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:58:35,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:58:35,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:58:35,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:58:35,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:58:35,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:58:35,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:58:35,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:58:35,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:58:35,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:58:35,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:58:35,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:58:35,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:58:35,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:58:35,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:58:35,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:58:35,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:58:35,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:58:35,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:58:35,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:58:35,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:58:35,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:58:35,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:58:35,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:58:35,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:58:35,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:58:35,980 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:58:35,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:58:35,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:58:35,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:58:35,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:58:35,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:58:35,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:58:35,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:58:35,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:58:35,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:58:35,984 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:58:35,984 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:58:35,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:58:35,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:58:35,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:58:35,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:58:35,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:58:35,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:58:35,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:35,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:58:35,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:58:35,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:58:36,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:58:36,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:58:36,001 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:58:36,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:58:36,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:58:36,002 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_df21a384-d1b5-4855-b167-550cd65bb87f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-18 19:58:36,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:58:36,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:58:36,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:58:36,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:58:36,342 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:58:36,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-18 19:58:36,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/data/3f07f5019/dfa2c17687434ea3948d66adfe8b340d/FLAGd6586bcf1 [2022-11-18 19:58:36,967 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:58:36,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-18 19:58:36,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/data/3f07f5019/dfa2c17687434ea3948d66adfe8b340d/FLAGd6586bcf1 [2022-11-18 19:58:37,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/data/3f07f5019/dfa2c17687434ea3948d66adfe8b340d [2022-11-18 19:58:37,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:58:37,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:58:37,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:37,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:58:37,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:58:37,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f0f779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37, skipping insertion in model container [2022-11-18 19:58:37,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:58:37,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:58:37,686 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_df21a384-d1b5-4855-b167-550cd65bb87f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-18 19:58:37,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:37,731 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:58:37,783 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_df21a384-d1b5-4855-b167-550cd65bb87f/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-18 19:58:37,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:37,836 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:58:37,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37 WrapperNode [2022-11-18 19:58:37,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:37,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:37,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:58:37,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:58:37,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,910 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-18 19:58:37,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:37,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:58:37,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:58:37,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:58:37,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:58:37,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:58:37,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:58:37,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:58:37,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (1/1) ... [2022-11-18 19:58:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:37,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:38,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:58:38,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:58:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:58:38,082 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:58:38,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:58:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:58:38,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:58:38,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:58:38,084 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 19:58:38,262 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:58:38,264 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:58:38,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:58:38,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:58:38,570 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 19:58:38,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:38 BoogieIcfgContainer [2022-11-18 19:58:38,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:58:38,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:58:38,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:58:38,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:58:38,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:58:37" (1/3) ... [2022-11-18 19:58:38,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb9262d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:38, skipping insertion in model container [2022-11-18 19:58:38,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:37" (2/3) ... [2022-11-18 19:58:38,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb9262d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:38, skipping insertion in model container [2022-11-18 19:58:38,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:38" (3/3) ... [2022-11-18 19:58:38,582 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-18 19:58:38,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:58:38,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:58:38,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:58:38,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:58:38,657 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:58:38,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2022-11-18 19:58:38,795 INFO L130 PetriNetUnfolder]: 17/162 cut-off events. [2022-11-18 19:58:38,795 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:58:38,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 162 events. 17/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 369 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-18 19:58:38,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2022-11-18 19:58:38,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 256 flow [2022-11-18 19:58:38,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:38,844 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;@4861f20e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:38,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 19:58:38,883 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 19:58:38,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:38,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:38,884 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] [2022-11-18 19:58:38,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:58:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 557832717, now seen corresponding path program 1 times [2022-11-18 19:58:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:38,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065472898] [2022-11-18 19:58:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:39,357 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 19:58:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:39,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065472898] [2022-11-18 19:58:39,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065472898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:39,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:39,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349986192] [2022-11-18 19:58:39,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:39,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 127 [2022-11-18 19:58:39,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 19:58:39,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:39,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 127 [2022-11-18 19:58:39,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:39,492 INFO L130 PetriNetUnfolder]: 0/114 cut-off events. [2022-11-18 19:58:39,493 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 19:58:39,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 114 events. 0/114 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 40/146 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 19:58:39,494 INFO L137 encePairwiseOnDemand]: 109/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2022-11-18 19:58:39,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 112 transitions, 260 flow [2022-11-18 19:58:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-11-18 19:58:39,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692913385826772 [2022-11-18 19:58:39,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-11-18 19:58:39,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-11-18 19:58:39,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:39,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-11-18 19:58:39,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 19:58:39,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 19:58:39,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 19:58:39,553 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 256 flow. Second operand 5 states and 552 transitions. [2022-11-18 19:58:39,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 112 transitions, 260 flow [2022-11-18 19:58:39,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:39,568 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 240 flow [2022-11-18 19:58:39,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2022-11-18 19:58:39,577 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 2 predicate places. [2022-11-18 19:58:39,578 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 240 flow [2022-11-18 19:58:39,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 19:58:39,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:39,578 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:58:39,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:58:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -72440655, now seen corresponding path program 1 times [2022-11-18 19:58:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:39,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638357858] [2022-11-18 19:58:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:39,740 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 19:58:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638357858] [2022-11-18 19:58:39,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638357858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:39,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:39,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553723507] [2022-11-18 19:58:39,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:39,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:39,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 127 [2022-11-18 19:58:39,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 19:58:39,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:39,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 127 [2022-11-18 19:58:39,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:39,833 INFO L130 PetriNetUnfolder]: 7/159 cut-off events. [2022-11-18 19:58:39,833 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 19:58:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 159 events. 7/159 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 367 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-18 19:58:39,835 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 10 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-11-18 19:58:39,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 270 flow [2022-11-18 19:58:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2022-11-18 19:58:39,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283464566929134 [2022-11-18 19:58:39,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2022-11-18 19:58:39,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2022-11-18 19:58:39,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:39,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2022-11-18 19:58:39,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:39,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 19:58:39,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 19:58:39,846 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 240 flow. Second operand 5 states and 526 transitions. [2022-11-18 19:58:39,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 270 flow [2022-11-18 19:58:39,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:39,851 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 236 flow [2022-11-18 19:58:39,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2022-11-18 19:58:39,852 INFO L288 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2022-11-18 19:58:39,852 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 236 flow [2022-11-18 19:58:39,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 19:58:39,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:39,853 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] [2022-11-18 19:58:39,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:58:39,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 19:58:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1085899652, now seen corresponding path program 1 times [2022-11-18 19:58:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:39,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102996442] [2022-11-18 19:58:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:39,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:39,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:39,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:39,928 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:39,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 19:58:39,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 19:58:39,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 19:58:39,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 19:58:39,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 19:58:39,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 19:58:39,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 19:58:39,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 19:58:39,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 19:58:39,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 19:58:39,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 19:58:39,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 19:58:39,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 19:58:39,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:58:39,935 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:58:39,941 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:39,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:58:39,996 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:58:39,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-11-18 19:58:40,066 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-11-18 19:58:40,066 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:58:40,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 789 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-11-18 19:58:40,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2022-11-18 19:58:40,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2022-11-18 19:58:40,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:40,089 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;@4861f20e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:40,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:58:40,096 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 19:58:40,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:40,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:40,097 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] [2022-11-18 19:58:40,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1622363370, now seen corresponding path program 1 times [2022-11-18 19:58:40,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:40,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055670014] [2022-11-18 19:58:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:40,213 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 19:58:40,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055670014] [2022-11-18 19:58:40,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055670014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:40,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:40,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653391492] [2022-11-18 19:58:40,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:40,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:40,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:40,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:40,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:40,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-18 19:58:40,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 165 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 19:58:40,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:40,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-18 19:58:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:40,302 INFO L130 PetriNetUnfolder]: 2/223 cut-off events. [2022-11-18 19:58:40,302 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-18 19:58:40,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 223 events. 2/223 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 125/324 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2022-11-18 19:58:40,304 INFO L137 encePairwiseOnDemand]: 141/165 looper letters, 19 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2022-11-18 19:58:40,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 372 flow [2022-11-18 19:58:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2022-11-18 19:58:40,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8690909090909091 [2022-11-18 19:58:40,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2022-11-18 19:58:40,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2022-11-18 19:58:40,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:40,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2022-11-18 19:58:40,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 19:58:40,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:40,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:40,312 INFO L175 Difference]: Start difference. First operand has 151 places, 165 transitions, 348 flow. Second operand 5 states and 717 transitions. [2022-11-18 19:58:40,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 372 flow [2022-11-18 19:58:40,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:40,316 INFO L231 Difference]: Finished difference. Result has 157 places, 150 transitions, 344 flow [2022-11-18 19:58:40,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=157, PETRI_TRANSITIONS=150} [2022-11-18 19:58:40,317 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 6 predicate places. [2022-11-18 19:58:40,318 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 150 transitions, 344 flow [2022-11-18 19:58:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 19:58:40,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:40,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:58:40,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:40,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2039262598, now seen corresponding path program 1 times [2022-11-18 19:58:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:40,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464888932] [2022-11-18 19:58:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:40,397 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 19:58:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:40,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464888932] [2022-11-18 19:58:40,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464888932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:40,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:40,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602620781] [2022-11-18 19:58:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:40,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-18 19:58:40,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 150 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 19:58:40,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:40,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-18 19:58:40,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:40,711 INFO L130 PetriNetUnfolder]: 172/1126 cut-off events. [2022-11-18 19:58:40,712 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-11-18 19:58:40,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 1126 events. 172/1126 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8292 event pairs, 102 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1460. Up to 206 conditions per place. [2022-11-18 19:58:40,722 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 36 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-18 19:58:40,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 173 transitions, 492 flow [2022-11-18 19:58:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2022-11-18 19:58:40,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8315151515151515 [2022-11-18 19:58:40,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2022-11-18 19:58:40,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2022-11-18 19:58:40,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:40,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2022-11-18 19:58:40,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 19:58:40,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:40,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:40,731 INFO L175 Difference]: Start difference. First operand has 157 places, 150 transitions, 344 flow. Second operand 5 states and 686 transitions. [2022-11-18 19:58:40,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 173 transitions, 492 flow [2022-11-18 19:58:40,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 173 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:40,739 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 391 flow [2022-11-18 19:58:40,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2022-11-18 19:58:40,742 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 12 predicate places. [2022-11-18 19:58:40,742 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 391 flow [2022-11-18 19:58:40,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 19:58:40,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:40,743 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:40,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:58:40,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash -619765447, now seen corresponding path program 1 times [2022-11-18 19:58:40,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577809789] [2022-11-18 19:58:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:58:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577809789] [2022-11-18 19:58:40,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577809789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:40,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:40,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:40,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313214334] [2022-11-18 19:58:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:40,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:40,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:40,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:40,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-18 19:58:40,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 19:58:40,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:40,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-18 19:58:40,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:40,987 INFO L130 PetriNetUnfolder]: 5/349 cut-off events. [2022-11-18 19:58:40,987 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-18 19:58:40,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 349 events. 5/349 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1207 event pairs, 0 based on Foata normal form. 16/331 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-18 19:58:40,991 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 11 selfloop transitions, 8 changer transitions 0/155 dead transitions. [2022-11-18 19:58:40,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 427 flow [2022-11-18 19:58:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 672 transitions. [2022-11-18 19:58:40,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145454545454546 [2022-11-18 19:58:40,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 672 transitions. [2022-11-18 19:58:40,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 672 transitions. [2022-11-18 19:58:40,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:40,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 672 transitions. [2022-11-18 19:58:40,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 19:58:40,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:41,000 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:41,000 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 391 flow. Second operand 5 states and 672 transitions. [2022-11-18 19:58:41,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 427 flow [2022-11-18 19:58:41,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:41,007 INFO L231 Difference]: Finished difference. Result has 166 places, 155 transitions, 408 flow [2022-11-18 19:58:41,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=166, PETRI_TRANSITIONS=155} [2022-11-18 19:58:41,012 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 15 predicate places. [2022-11-18 19:58:41,012 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 155 transitions, 408 flow [2022-11-18 19:58:41,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 19:58:41,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:41,015 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:41,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:58:41,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2032859231, now seen corresponding path program 1 times [2022-11-18 19:58:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469204790] [2022-11-18 19:58:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469204790] [2022-11-18 19:58:41,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469204790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179622892] [2022-11-18 19:58:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:41,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:41,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:58:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:41,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:58:41,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:41,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:41,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179622892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:41,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:41,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:58:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897055120] [2022-11-18 19:58:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:41,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:58:41,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 165 [2022-11-18 19:58:41,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 19:58:41,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:41,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 165 [2022-11-18 19:58:41,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:41,490 INFO L130 PetriNetUnfolder]: 5/348 cut-off events. [2022-11-18 19:58:41,490 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-18 19:58:41,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 348 events. 5/348 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1189 event pairs, 0 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 293. Up to 23 conditions per place. [2022-11-18 19:58:41,493 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 13 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2022-11-18 19:58:41,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 440 flow [2022-11-18 19:58:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:58:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:58:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2022-11-18 19:58:41,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-11-18 19:58:41,496 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2022-11-18 19:58:41,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2022-11-18 19:58:41,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:41,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2022-11-18 19:58:41,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 19:58:41,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 19:58:41,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 19:58:41,500 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 408 flow. Second operand 4 states and 539 transitions. [2022-11-18 19:58:41,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 440 flow [2022-11-18 19:58:41,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 154 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:41,508 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 402 flow [2022-11-18 19:58:41,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2022-11-18 19:58:41,511 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-11-18 19:58:41,511 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 402 flow [2022-11-18 19:58:41,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 19:58:41,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:41,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:41,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:41,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:41,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 435641149, now seen corresponding path program 1 times [2022-11-18 19:58:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:41,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368313769] [2022-11-18 19:58:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:41,914 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 19:58:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:41,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368313769] [2022-11-18 19:58:41,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368313769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:41,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:41,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772682795] [2022-11-18 19:58:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:41,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:41,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:41,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:41,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-18 19:58:41,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 19:58:41,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:41,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-18 19:58:41,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:42,435 INFO L130 PetriNetUnfolder]: 341/1632 cut-off events. [2022-11-18 19:58:42,435 INFO L131 PetriNetUnfolder]: For 301/302 co-relation queries the response was YES. [2022-11-18 19:58:42,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 1632 events. 341/1632 cut-off events. For 301/302 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13147 event pairs, 57 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 2246. Up to 237 conditions per place. [2022-11-18 19:58:42,451 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 60 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2022-11-18 19:58:42,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 204 transitions, 710 flow [2022-11-18 19:58:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1188 transitions. [2022-11-18 19:58:42,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-18 19:58:42,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1188 transitions. [2022-11-18 19:58:42,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1188 transitions. [2022-11-18 19:58:42,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:42,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1188 transitions. [2022-11-18 19:58:42,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states 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 19:58:42,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 19:58:42,463 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 19:58:42,463 INFO L175 Difference]: Start difference. First operand has 165 places, 154 transitions, 402 flow. Second operand 9 states and 1188 transitions. [2022-11-18 19:58:42,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 204 transitions, 710 flow [2022-11-18 19:58:42,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 204 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:42,469 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 518 flow [2022-11-18 19:58:42,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=518, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-18 19:58:42,471 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 25 predicate places. [2022-11-18 19:58:42,471 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 518 flow [2022-11-18 19:58:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.5) internal successors, (747), 6 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 19:58:42,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:42,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:42,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:58:42,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash 619974258, now seen corresponding path program 1 times [2022-11-18 19:58:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:42,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290865140] [2022-11-18 19:58:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:42,620 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 19:58:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290865140] [2022-11-18 19:58:42,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290865140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:42,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:42,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133879692] [2022-11-18 19:58:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:42,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:42,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:42,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-18 19:58:42,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 19:58:42,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:42,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-18 19:58:42,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:43,074 INFO L130 PetriNetUnfolder]: 319/1739 cut-off events. [2022-11-18 19:58:43,075 INFO L131 PetriNetUnfolder]: For 1028/1049 co-relation queries the response was YES. [2022-11-18 19:58:43,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 1739 events. 319/1739 cut-off events. For 1028/1049 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14292 event pairs, 78 based on Foata normal form. 34/1597 useless extension candidates. Maximal degree in co-relation 2221. Up to 272 conditions per place. [2022-11-18 19:58:43,093 INFO L137 encePairwiseOnDemand]: 154/165 looper letters, 65 selfloop transitions, 19 changer transitions 0/209 dead transitions. [2022-11-18 19:58:43,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 209 transitions, 853 flow [2022-11-18 19:58:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1190 transitions. [2022-11-18 19:58:43,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013468013468014 [2022-11-18 19:58:43,099 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1190 transitions. [2022-11-18 19:58:43,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1190 transitions. [2022-11-18 19:58:43,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:43,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1190 transitions. [2022-11-18 19:58:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.22222222222223) internal successors, (1190), 9 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 19:58:43,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 19:58:43,108 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 19:58:43,108 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 518 flow. Second operand 9 states and 1190 transitions. [2022-11-18 19:58:43,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 209 transitions, 853 flow [2022-11-18 19:58:43,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 209 transitions, 812 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:43,119 INFO L231 Difference]: Finished difference. Result has 182 places, 170 transitions, 565 flow [2022-11-18 19:58:43,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=182, PETRI_TRANSITIONS=170} [2022-11-18 19:58:43,121 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-18 19:58:43,121 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 170 transitions, 565 flow [2022-11-18 19:58:43,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 19:58:43,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:43,122 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:58:43,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1824606493, now seen corresponding path program 1 times [2022-11-18 19:58:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917500001] [2022-11-18 19:58:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,216 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 19:58:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:43,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917500001] [2022-11-18 19:58:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917500001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:43,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:43,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238231328] [2022-11-18 19:58:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:43,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:43,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 165 [2022-11-18 19:58:43,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 170 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 19:58:43,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:43,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 165 [2022-11-18 19:58:43,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:43,548 INFO L130 PetriNetUnfolder]: 261/1641 cut-off events. [2022-11-18 19:58:43,548 INFO L131 PetriNetUnfolder]: For 1177/1224 co-relation queries the response was YES. [2022-11-18 19:58:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1641 events. 261/1641 cut-off events. For 1177/1224 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13365 event pairs, 61 based on Foata normal form. 23/1516 useless extension candidates. Maximal degree in co-relation 2730. Up to 362 conditions per place. [2022-11-18 19:58:43,567 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 55 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2022-11-18 19:58:43,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 196 transitions, 827 flow [2022-11-18 19:58:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-18 19:58:43,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290909090909091 [2022-11-18 19:58:43,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-18 19:58:43,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-18 19:58:43,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:43,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-18 19:58:43,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 19:58:43,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:43,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 19:58:43,574 INFO L175 Difference]: Start difference. First operand has 182 places, 170 transitions, 565 flow. Second operand 5 states and 684 transitions. [2022-11-18 19:58:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 196 transitions, 827 flow [2022-11-18 19:58:43,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 196 transitions, 799 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:43,582 INFO L231 Difference]: Finished difference. Result has 185 places, 173 transitions, 595 flow [2022-11-18 19:58:43,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=185, PETRI_TRANSITIONS=173} [2022-11-18 19:58:43,583 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 34 predicate places. [2022-11-18 19:58:43,583 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 173 transitions, 595 flow [2022-11-18 19:58:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 19:58:43,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:43,584 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:58:43,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:58:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1636647252, now seen corresponding path program 1 times [2022-11-18 19:58:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:43,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928118199] [2022-11-18 19:58:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:43,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:58:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:58:43,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:58:43,622 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 19:58:43,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 19:58:43,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 19:58:43,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 19:58:43,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 19:58:43,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 19:58:43,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 19:58:43,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 19:58:43,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:58:43,626 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,626 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:58:43,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:58:43,651 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:58:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-11-18 19:58:43,709 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-11-18 19:58:43,710 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 19:58:43,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-11-18 19:58:43,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 203 transitions, 436 flow [2022-11-18 19:58:43,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 203 transitions, 436 flow [2022-11-18 19:58:43,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:43,721 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;@4861f20e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:43,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 19:58:43,727 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 19:58:43,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:58:43,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:43,728 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] [2022-11-18 19:58:43,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash 997819333, now seen corresponding path program 1 times [2022-11-18 19:58:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:43,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742445771] [2022-11-18 19:58:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,788 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 19:58:43,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742445771] [2022-11-18 19:58:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742445771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:43,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:43,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:43,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082316384] [2022-11-18 19:58:43,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:43,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:43,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:43,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:43,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-18 19:58:43,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 203 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 19:58:43,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:43,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-18 19:58:43,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:43,902 INFO L130 PetriNetUnfolder]: 7/359 cut-off events. [2022-11-18 19:58:43,902 INFO L131 PetriNetUnfolder]: For 76/184 co-relation queries the response was YES. [2022-11-18 19:58:43,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 359 events. 7/359 cut-off events. For 76/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1119 event pairs, 1 based on Foata normal form. 305/620 useless extension candidates. Maximal degree in co-relation 260. Up to 40 conditions per place. [2022-11-18 19:58:43,907 INFO L137 encePairwiseOnDemand]: 173/203 looper letters, 21 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2022-11-18 19:58:43,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 452 flow [2022-11-18 19:58:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 875 transitions. [2022-11-18 19:58:43,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-11-18 19:58:43,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 875 transitions. [2022-11-18 19:58:43,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 875 transitions. [2022-11-18 19:58:43,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:43,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 875 transitions. [2022-11-18 19:58:43,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 19:58:43,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:43,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:43,915 INFO L175 Difference]: Start difference. First operand has 184 places, 203 transitions, 436 flow. Second operand 5 states and 875 transitions. [2022-11-18 19:58:43,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 452 flow [2022-11-18 19:58:43,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:43,918 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 420 flow [2022-11-18 19:58:43,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-11-18 19:58:43,921 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 6 predicate places. [2022-11-18 19:58:43,921 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 420 flow [2022-11-18 19:58:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 19:58:43,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:43,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:58:43,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1086599785, now seen corresponding path program 1 times [2022-11-18 19:58:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929752086] [2022-11-18 19:58:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:43,998 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 19:58:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929752086] [2022-11-18 19:58:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929752086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:43,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:43,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326711872] [2022-11-18 19:58:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:44,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-18 19:58:44,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 19:58:44,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:44,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-18 19:58:44,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:45,604 INFO L130 PetriNetUnfolder]: 1866/8397 cut-off events. [2022-11-18 19:58:45,604 INFO L131 PetriNetUnfolder]: For 1108/1108 co-relation queries the response was YES. [2022-11-18 19:58:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11846 conditions, 8397 events. 1866/8397 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 94171 event pairs, 837 based on Foata normal form. 0/7379 useless extension candidates. Maximal degree in co-relation 11778. Up to 1995 conditions per place. [2022-11-18 19:58:45,699 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 52 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2022-11-18 19:58:45,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 652 flow [2022-11-18 19:58:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-11-18 19:58:45,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216748768472907 [2022-11-18 19:58:45,702 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-11-18 19:58:45,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-11-18 19:58:45,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:45,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-11-18 19:58:45,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 19:58:45,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:45,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:45,708 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 420 flow. Second operand 5 states and 834 transitions. [2022-11-18 19:58:45,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 652 flow [2022-11-18 19:58:45,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 217 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:45,714 INFO L231 Difference]: Finished difference. Result has 196 places, 189 transitions, 482 flow [2022-11-18 19:58:45,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=196, PETRI_TRANSITIONS=189} [2022-11-18 19:58:45,715 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 12 predicate places. [2022-11-18 19:58:45,715 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 189 transitions, 482 flow [2022-11-18 19:58:45,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 19:58:45,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:45,716 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:45,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:58:45,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1138532812, now seen corresponding path program 1 times [2022-11-18 19:58:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328274808] [2022-11-18 19:58:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:58:45,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:45,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328274808] [2022-11-18 19:58:45,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328274808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:45,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:45,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640858694] [2022-11-18 19:58:45,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:45,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-18 19:58:45,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 189 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 19:58:45,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:45,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-18 19:58:45,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:46,046 INFO L130 PetriNetUnfolder]: 37/862 cut-off events. [2022-11-18 19:58:46,047 INFO L131 PetriNetUnfolder]: For 289/708 co-relation queries the response was YES. [2022-11-18 19:58:46,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 862 events. 37/862 cut-off events. For 289/708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5217 event pairs, 7 based on Foata normal form. 41/792 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-18 19:58:46,061 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 13 selfloop transitions, 8 changer transitions 0/189 dead transitions. [2022-11-18 19:58:46,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 522 flow [2022-11-18 19:58:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 824 transitions. [2022-11-18 19:58:46,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8118226600985222 [2022-11-18 19:58:46,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 824 transitions. [2022-11-18 19:58:46,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 824 transitions. [2022-11-18 19:58:46,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:46,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 824 transitions. [2022-11-18 19:58:46,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:46,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:46,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:46,071 INFO L175 Difference]: Start difference. First operand has 196 places, 189 transitions, 482 flow. Second operand 5 states and 824 transitions. [2022-11-18 19:58:46,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 522 flow [2022-11-18 19:58:46,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 189 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:46,077 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 498 flow [2022-11-18 19:58:46,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2022-11-18 19:58:46,078 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 15 predicate places. [2022-11-18 19:58:46,078 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 498 flow [2022-11-18 19:58:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 19:58:46,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:46,079 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:58:46,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 934779449, now seen corresponding path program 1 times [2022-11-18 19:58:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:46,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184207930] [2022-11-18 19:58:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:46,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:46,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184207930] [2022-11-18 19:58:46,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184207930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:46,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233086001] [2022-11-18 19:58:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:46,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:46,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:46,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:58:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:46,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:58:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:46,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:46,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233086001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:46,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:58:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:58:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51958118] [2022-11-18 19:58:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:58:46,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 203 [2022-11-18 19:58:46,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:58:46,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:46,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 203 [2022-11-18 19:58:46,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:46,642 INFO L130 PetriNetUnfolder]: 37/860 cut-off events. [2022-11-18 19:58:46,642 INFO L131 PetriNetUnfolder]: For 291/671 co-relation queries the response was YES. [2022-11-18 19:58:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 860 events. 37/860 cut-off events. For 291/671 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5161 event pairs, 7 based on Foata normal form. 15/764 useless extension candidates. Maximal degree in co-relation 774. Up to 62 conditions per place. [2022-11-18 19:58:46,654 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 15 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2022-11-18 19:58:46,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 188 transitions, 534 flow [2022-11-18 19:58:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:58:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:58:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2022-11-18 19:58:46,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8140394088669951 [2022-11-18 19:58:46,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2022-11-18 19:58:46,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2022-11-18 19:58:46,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:46,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2022-11-18 19:58:46,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 19:58:46,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 19:58:46,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 19:58:46,661 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 498 flow. Second operand 4 states and 661 transitions. [2022-11-18 19:58:46,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 188 transitions, 534 flow [2022-11-18 19:58:46,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 188 transitions, 522 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:46,666 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 492 flow [2022-11-18 19:58:46,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-18 19:58:46,667 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 14 predicate places. [2022-11-18 19:58:46,667 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 492 flow [2022-11-18 19:58:46,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:58:46,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:46,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:46,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:58:46,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1738330175, now seen corresponding path program 1 times [2022-11-18 19:58:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877615201] [2022-11-18 19:58:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:46,976 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 19:58:46,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:46,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877615201] [2022-11-18 19:58:46,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877615201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:46,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:46,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710667622] [2022-11-18 19:58:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:46,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-18 19:58:46,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 19:58:46,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:46,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-18 19:58:46,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:49,924 INFO L130 PetriNetUnfolder]: 4005/14521 cut-off events. [2022-11-18 19:58:49,924 INFO L131 PetriNetUnfolder]: For 4223/4278 co-relation queries the response was YES. [2022-11-18 19:58:50,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23598 conditions, 14521 events. 4005/14521 cut-off events. For 4223/4278 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 171600 event pairs, 1089 based on Foata normal form. 27/12799 useless extension candidates. Maximal degree in co-relation 14874. Up to 2727 conditions per place. [2022-11-18 19:58:50,100 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 100 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2022-11-18 19:58:50,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 1072 flow [2022-11-18 19:58:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1470 transitions. [2022-11-18 19:58:50,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2022-11-18 19:58:50,104 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1470 transitions. [2022-11-18 19:58:50,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1470 transitions. [2022-11-18 19:58:50,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:50,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1470 transitions. [2022-11-18 19:58:50,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.33333333333334) internal successors, (1470), 9 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 19:58:50,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:58:50,112 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:58:50,113 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 492 flow. Second operand 9 states and 1470 transitions. [2022-11-18 19:58:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 1072 flow [2022-11-18 19:58:50,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 278 transitions, 1062 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:50,124 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 686 flow [2022-11-18 19:58:50,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=686, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-18 19:58:50,125 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 25 predicate places. [2022-11-18 19:58:50,125 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 686 flow [2022-11-18 19:58:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 19:58:50,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:50,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:50,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:58:50,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1946340225, now seen corresponding path program 1 times [2022-11-18 19:58:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:50,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783841107] [2022-11-18 19:58:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:50,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:50,216 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 19:58:50,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:50,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783841107] [2022-11-18 19:58:50,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783841107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:50,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:50,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758640873] [2022-11-18 19:58:50,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:50,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:50,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-18 19:58:50,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:58:50,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:50,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-18 19:58:50,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:53,103 INFO L130 PetriNetUnfolder]: 3800/13805 cut-off events. [2022-11-18 19:58:53,103 INFO L131 PetriNetUnfolder]: For 13134/13294 co-relation queries the response was YES. [2022-11-18 19:58:53,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27407 conditions, 13805 events. 3800/13805 cut-off events. For 13134/13294 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 163666 event pairs, 1109 based on Foata normal form. 226/12652 useless extension candidates. Maximal degree in co-relation 18527. Up to 2976 conditions per place. [2022-11-18 19:58:53,379 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 107 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2022-11-18 19:58:53,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 285 transitions, 1331 flow [2022-11-18 19:58:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1468 transitions. [2022-11-18 19:58:53,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8035030103995622 [2022-11-18 19:58:53,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1468 transitions. [2022-11-18 19:58:53,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1468 transitions. [2022-11-18 19:58:53,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:53,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1468 transitions. [2022-11-18 19:58:53,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.11111111111111) internal successors, (1468), 9 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states 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 19:58:53,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:58:53,410 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:58:53,411 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 686 flow. Second operand 9 states and 1468 transitions. [2022-11-18 19:58:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 285 transitions, 1331 flow [2022-11-18 19:58:53,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 285 transitions, 1264 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:53,450 INFO L231 Difference]: Finished difference. Result has 215 places, 215 transitions, 767 flow [2022-11-18 19:58:53,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=215, PETRI_TRANSITIONS=215} [2022-11-18 19:58:53,452 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 31 predicate places. [2022-11-18 19:58:53,453 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 215 transitions, 767 flow [2022-11-18 19:58:53,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:58:53,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:53,454 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:58:53,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1874874608, now seen corresponding path program 1 times [2022-11-18 19:58:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167810560] [2022-11-18 19:58:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:53,530 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 19:58:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167810560] [2022-11-18 19:58:53,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167810560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:53,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:53,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654331416] [2022-11-18 19:58:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:58:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:58:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:58:53,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-18 19:58:53,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 215 transitions, 767 flow. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:53,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-18 19:58:53,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:56,516 INFO L130 PetriNetUnfolder]: 4301/18335 cut-off events. [2022-11-18 19:58:56,516 INFO L131 PetriNetUnfolder]: For 17048/17450 co-relation queries the response was YES. [2022-11-18 19:58:56,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18335 events. 4301/18335 cut-off events. For 17048/17450 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 235515 event pairs, 1616 based on Foata normal form. 225/16570 useless extension candidates. Maximal degree in co-relation 27835. Up to 4746 conditions per place. [2022-11-18 19:58:56,764 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 93 selfloop transitions, 11 changer transitions 0/264 dead transitions. [2022-11-18 19:58:56,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 264 transitions, 1283 flow [2022-11-18 19:58:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2022-11-18 19:58:56,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819704433497537 [2022-11-18 19:58:56,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2022-11-18 19:58:56,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2022-11-18 19:58:56,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:56,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2022-11-18 19:58:56,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 19:58:56,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:56,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:58:56,772 INFO L175 Difference]: Start difference. First operand has 215 places, 215 transitions, 767 flow. Second operand 5 states and 832 transitions. [2022-11-18 19:58:56,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 264 transitions, 1283 flow [2022-11-18 19:58:56,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 264 transitions, 1241 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:56,846 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 817 flow [2022-11-18 19:58:56,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2022-11-18 19:58:56,847 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 34 predicate places. [2022-11-18 19:58:56,848 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 817 flow [2022-11-18 19:58:56,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:56,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:56,849 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:56,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:58:56,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:58:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1466327854, now seen corresponding path program 1 times [2022-11-18 19:58:56,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:56,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393409612] [2022-11-18 19:58:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:57,101 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 19:58:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:57,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393409612] [2022-11-18 19:58:57,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393409612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:57,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:57,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138364785] [2022-11-18 19:58:57,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:57,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:57,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-18 19:58:57,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:58:57,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:57,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-18 19:58:57,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:03,358 INFO L130 PetriNetUnfolder]: 9325/35764 cut-off events. [2022-11-18 19:59:03,359 INFO L131 PetriNetUnfolder]: For 32404/33655 co-relation queries the response was YES. [2022-11-18 19:59:03,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71620 conditions, 35764 events. 9325/35764 cut-off events. For 32404/33655 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 502610 event pairs, 3517 based on Foata normal form. 444/32613 useless extension candidates. Maximal degree in co-relation 49371. Up to 7085 conditions per place. [2022-11-18 19:59:03,901 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 149 selfloop transitions, 46 changer transitions 0/350 dead transitions. [2022-11-18 19:59:03,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 350 transitions, 1963 flow [2022-11-18 19:59:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1467 transitions. [2022-11-18 19:59:03,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8029556650246306 [2022-11-18 19:59:03,915 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1467 transitions. [2022-11-18 19:59:03,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1467 transitions. [2022-11-18 19:59:03,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:03,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1467 transitions. [2022-11-18 19:59:03,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states 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 19:59:03,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:59:03,938 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:59:03,938 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 817 flow. Second operand 9 states and 1467 transitions. [2022-11-18 19:59:03,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 350 transitions, 1963 flow [2022-11-18 19:59:04,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 350 transitions, 1957 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:04,136 INFO L231 Difference]: Finished difference. Result has 231 places, 255 transitions, 1301 flow [2022-11-18 19:59:04,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=231, PETRI_TRANSITIONS=255} [2022-11-18 19:59:04,137 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 47 predicate places. [2022-11-18 19:59:04,138 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 255 transitions, 1301 flow [2022-11-18 19:59:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 19:59:04,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:04,139 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:59:04,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:59:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 978815422, now seen corresponding path program 1 times [2022-11-18 19:59:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:04,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940572547] [2022-11-18 19:59:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:04,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940572547] [2022-11-18 19:59:04,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940572547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:04,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121347905] [2022-11-18 19:59:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:04,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:04,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:04,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:04,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:59:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:04,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:04,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:04,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121347905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:04,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-18 19:59:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924563855] [2022-11-18 19:59:04,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:59:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:59:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:59:04,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 203 [2022-11-18 19:59:04,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 255 transitions, 1301 flow. Second operand has 14 states, 14 states have (on average 119.5) internal successors, (1673), 14 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 19:59:04,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:04,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 203 [2022-11-18 19:59:04,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:12,267 INFO L130 PetriNetUnfolder]: 8737/33379 cut-off events. [2022-11-18 19:59:12,267 INFO L131 PetriNetUnfolder]: For 46137/46847 co-relation queries the response was YES. [2022-11-18 19:59:12,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70247 conditions, 33379 events. 8737/33379 cut-off events. For 46137/46847 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 438340 event pairs, 1183 based on Foata normal form. 2344/33358 useless extension candidates. Maximal degree in co-relation 57302. Up to 6270 conditions per place. [2022-11-18 19:59:12,581 INFO L137 encePairwiseOnDemand]: 178/203 looper letters, 489 selfloop transitions, 232 changer transitions 0/843 dead transitions. [2022-11-18 19:59:12,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 843 transitions, 5590 flow [2022-11-18 19:59:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:59:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 19:59:12,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5729 transitions. [2022-11-18 19:59:12,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6414017017465293 [2022-11-18 19:59:12,594 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5729 transitions. [2022-11-18 19:59:12,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5729 transitions. [2022-11-18 19:59:12,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:12,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5729 transitions. [2022-11-18 19:59:12,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.20454545454547) internal successors, (5729), 44 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states 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 19:59:12,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 203.0) internal successors, (9135), 45 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states 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 19:59:12,627 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 203.0) internal successors, (9135), 45 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states 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 19:59:12,627 INFO L175 Difference]: Start difference. First operand has 231 places, 255 transitions, 1301 flow. Second operand 44 states and 5729 transitions. [2022-11-18 19:59:12,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 843 transitions, 5590 flow [2022-11-18 19:59:12,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 843 transitions, 5523 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-18 19:59:12,892 INFO L231 Difference]: Finished difference. Result has 290 places, 444 transitions, 3414 flow [2022-11-18 19:59:12,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3414, PETRI_PLACES=290, PETRI_TRANSITIONS=444} [2022-11-18 19:59:12,893 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 106 predicate places. [2022-11-18 19:59:12,893 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 444 transitions, 3414 flow [2022-11-18 19:59:12,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 119.5) internal successors, (1673), 14 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 19:59:12,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:12,894 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:12,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-18 19:59:13,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:59:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1788477512, now seen corresponding path program 1 times [2022-11-18 19:59:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:13,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835885217] [2022-11-18 19:59:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:13,204 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 19:59:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:13,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835885217] [2022-11-18 19:59:13,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835885217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:13,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:13,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:59:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498440307] [2022-11-18 19:59:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:59:13,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2022-11-18 19:59:13,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 444 transitions, 3414 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 19:59:13,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:13,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2022-11-18 19:59:13,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:19,032 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][405], [1005#(<= 1 |t_funThread2of3ForFork0_#t~post7|), 419#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 199#(= ~global~0 0), Black: 448#(<= ~global~0 1), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-18 19:59:19,033 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-18 19:59:19,033 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:19,033 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:19,033 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:19,070 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][219], [419#true, Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), 1000#true, Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, 141#L702-17true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 444#true, Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 448#(<= ~global~0 1), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, 207#true]) [2022-11-18 19:59:19,070 INFO L383 tUnfolder$Statistics]: this new event has 171 ancestors and is cut-off event [2022-11-18 19:59:19,070 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-18 19:59:19,070 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-18 19:59:19,070 INFO L386 tUnfolder$Statistics]: existing Event has 124 ancestors and is cut-off event [2022-11-18 19:59:19,124 INFO L130 PetriNetUnfolder]: 3582/26290 cut-off events. [2022-11-18 19:59:19,124 INFO L131 PetriNetUnfolder]: For 61279/62548 co-relation queries the response was YES. [2022-11-18 19:59:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53327 conditions, 26290 events. 3582/26290 cut-off events. For 61279/62548 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 385840 event pairs, 1411 based on Foata normal form. 424/23652 useless extension candidates. Maximal degree in co-relation 52335. Up to 4589 conditions per place. [2022-11-18 19:59:19,449 INFO L137 encePairwiseOnDemand]: 190/203 looper letters, 219 selfloop transitions, 63 changer transitions 0/518 dead transitions. [2022-11-18 19:59:19,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 518 transitions, 4571 flow [2022-11-18 19:59:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1461 transitions. [2022-11-18 19:59:19,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7996715927750411 [2022-11-18 19:59:19,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1461 transitions. [2022-11-18 19:59:19,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1461 transitions. [2022-11-18 19:59:19,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:19,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1461 transitions. [2022-11-18 19:59:19,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.33333333333334) internal successors, (1461), 9 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states 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 19:59:19,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:59:19,463 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states 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 19:59:19,464 INFO L175 Difference]: Start difference. First operand has 290 places, 444 transitions, 3414 flow. Second operand 9 states and 1461 transitions. [2022-11-18 19:59:19,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 518 transitions, 4571 flow [2022-11-18 19:59:19,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 518 transitions, 4121 flow, removed 178 selfloop flow, removed 8 redundant places. [2022-11-18 19:59:19,828 INFO L231 Difference]: Finished difference. Result has 291 places, 446 transitions, 3169 flow [2022-11-18 19:59:19,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3169, PETRI_PLACES=291, PETRI_TRANSITIONS=446} [2022-11-18 19:59:19,829 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 107 predicate places. [2022-11-18 19:59:19,829 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 446 transitions, 3169 flow [2022-11-18 19:59:19,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 19:59:19,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:19,830 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:19,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:59:19,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:59:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1318470136, now seen corresponding path program 1 times [2022-11-18 19:59:19,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:19,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174811817] [2022-11-18 19:59:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:59:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:19,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174811817] [2022-11-18 19:59:19,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174811817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:19,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:19,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822487583] [2022-11-18 19:59:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:19,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 203 [2022-11-18 19:59:19,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 446 transitions, 3169 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 19:59:19,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:19,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 203 [2022-11-18 19:59:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:25,408 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([786] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][207], [1005#(<= 1 |t_funThread2of3ForFork0_#t~post7|), 419#true, 455#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 404#(<= ~global~0 1), Black: 411#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 405#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 403#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 409#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1014#true, Black: 430#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 423#(<= 1 ~global~0), 400#true, t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 437#(= |t_funThread2of3ForFork0_#t~post5| 0), 898#(and (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 436#(= ~global~0 0), Black: 439#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 189#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 190#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 192#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 449#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 447#(= |t_funThread2of3ForFork0_#t~post5| 0), 105#L702-16true, Black: 200#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 199#(= ~global~0 0), Black: 448#(<= ~global~0 1), Black: 453#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 202#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 951#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 941#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 908#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 939#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 906#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 916#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 935#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 963#(and (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 947#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 912#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 914#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 943#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 957#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 953#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 933#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#mutex1~0.base| 4) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 5#L711-5true, Black: 1011#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 207#true]) [2022-11-18 19:59:25,408 INFO L383 tUnfolder$Statistics]: this new event has 170 ancestors and is cut-off event [2022-11-18 19:59:25,408 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:25,408 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:25,408 INFO L386 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-11-18 19:59:25,527 INFO L130 PetriNetUnfolder]: 3049/24475 cut-off events. [2022-11-18 19:59:25,527 INFO L131 PetriNetUnfolder]: For 52431/53811 co-relation queries the response was YES. [2022-11-18 19:59:25,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47854 conditions, 24475 events. 3049/24475 cut-off events. For 52431/53811 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 356204 event pairs, 1442 based on Foata normal form. 411/21870 useless extension candidates. Maximal degree in co-relation 46893. Up to 4593 conditions per place. [2022-11-18 19:59:25,781 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 201 selfloop transitions, 15 changer transitions 0/492 dead transitions. [2022-11-18 19:59:25,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 492 transitions, 4069 flow [2022-11-18 19:59:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:59:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-18 19:59:25,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177339901477833 [2022-11-18 19:59:25,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-18 19:59:25,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-18 19:59:25,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:25,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-18 19:59:25,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 19:59:25,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:59:25,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 19:59:25,788 INFO L175 Difference]: Start difference. First operand has 291 places, 446 transitions, 3169 flow. Second operand 5 states and 830 transitions. [2022-11-18 19:59:25,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 492 transitions, 4069 flow [2022-11-18 19:59:25,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 492 transitions, 3981 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 19:59:25,967 INFO L231 Difference]: Finished difference. Result has 294 places, 450 transitions, 3185 flow [2022-11-18 19:59:25,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3185, PETRI_PLACES=294, PETRI_TRANSITIONS=450} [2022-11-18 19:59:25,968 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 110 predicate places. [2022-11-18 19:59:25,968 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 450 transitions, 3185 flow [2022-11-18 19:59:25,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 19:59:25,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:25,968 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:59:25,969 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:59:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -325865581, now seen corresponding path program 1 times [2022-11-18 19:59:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:25,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938312068] [2022-11-18 19:59:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:59:25,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:59:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:59:26,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:59:26,028 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:59:26,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 19:59:26,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 19:59:26,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 19:59:26,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 19:59:26,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 19:59:26,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 19:59:26,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 19:59:26,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 19:59:26,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 19:59:26,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 19:59:26,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 19:59:26,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 19:59:26,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 19:59:26,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 19:59:26,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 19:59:26,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 19:59:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:59:26,033 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:26,036 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:59:26,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 19:59:26,068 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:59:26,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-11-18 19:59:26,165 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-11-18 19:59:26,165 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 19:59:26,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2533 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-11-18 19:59:26,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 241 transitions, 526 flow [2022-11-18 19:59:26,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 241 transitions, 526 flow [2022-11-18 19:59:26,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:59:26,180 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;@4861f20e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:59:26,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 19:59:26,185 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-18 19:59:26,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:59:26,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:26,186 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] [2022-11-18 19:59:26,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:59:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -171553766, now seen corresponding path program 1 times [2022-11-18 19:59:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147057621] [2022-11-18 19:59:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:26,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,232 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 19:59:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147057621] [2022-11-18 19:59:26,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147057621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:26,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:26,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:26,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13593987] [2022-11-18 19:59:26,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:26,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-18 19:59:26,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 241 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 19:59:26,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:26,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-18 19:59:26,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:26,392 INFO L130 PetriNetUnfolder]: 20/575 cut-off events. [2022-11-18 19:59:26,392 INFO L131 PetriNetUnfolder]: For 187/403 co-relation queries the response was YES. [2022-11-18 19:59:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 575 events. 20/575 cut-off events. For 187/403 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 629/1128 useless extension candidates. Maximal degree in co-relation 429. Up to 71 conditions per place. [2022-11-18 19:59:26,400 INFO L137 encePairwiseOnDemand]: 205/241 looper letters, 23 selfloop transitions, 4 changer transitions 0/218 dead transitions. [2022-11-18 19:59:26,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 534 flow [2022-11-18 19:59:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:59:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1033 transitions. [2022-11-18 19:59:26,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8572614107883817 [2022-11-18 19:59:26,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1033 transitions. [2022-11-18 19:59:26,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1033 transitions. [2022-11-18 19:59:26,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:26,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1033 transitions. [2022-11-18 19:59:26,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.6) internal successors, (1033), 5 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states 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 19:59:26,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:26,409 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:26,409 INFO L175 Difference]: Start difference. First operand has 217 places, 241 transitions, 526 flow. Second operand 5 states and 1033 transitions. [2022-11-18 19:59:26,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 534 flow [2022-11-18 19:59:26,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:26,414 INFO L231 Difference]: Finished difference. Result has 223 places, 214 transitions, 498 flow [2022-11-18 19:59:26,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=223, PETRI_TRANSITIONS=214} [2022-11-18 19:59:26,416 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2022-11-18 19:59:26,416 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 214 transitions, 498 flow [2022-11-18 19:59:26,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 19:59:26,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:26,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:59:26,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:59:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1209093758, now seen corresponding path program 1 times [2022-11-18 19:59:26,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:26,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924919922] [2022-11-18 19:59:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,466 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 19:59:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:26,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924919922] [2022-11-18 19:59:26,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924919922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:26,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:26,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325159111] [2022-11-18 19:59:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:26,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:26,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 241 [2022-11-18 19:59:26,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 214 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 19:59:26,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:26,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 241 [2022-11-18 19:59:26,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:35,451 INFO L130 PetriNetUnfolder]: 15402/57263 cut-off events. [2022-11-18 19:59:35,452 INFO L131 PetriNetUnfolder]: For 9960/9960 co-relation queries the response was YES. [2022-11-18 19:59:35,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82820 conditions, 57263 events. 15402/57263 cut-off events. For 9960/9960 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 817526 event pairs, 8862 based on Foata normal form. 0/49665 useless extension candidates. Maximal degree in co-relation 82751. Up to 15267 conditions per place. [2022-11-18 19:59:36,190 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 68 selfloop transitions, 10 changer transitions 0/261 dead transitions. [2022-11-18 19:59:36,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 261 transitions, 820 flow [2022-11-18 19:59:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:59:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2022-11-18 19:59:36,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149377593360996 [2022-11-18 19:59:36,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2022-11-18 19:59:36,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2022-11-18 19:59:36,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:36,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2022-11-18 19:59:36,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 19:59:36,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:36,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:36,201 INFO L175 Difference]: Start difference. First operand has 223 places, 214 transitions, 498 flow. Second operand 5 states and 982 transitions. [2022-11-18 19:59:36,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 261 transitions, 820 flow [2022-11-18 19:59:36,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 261 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:36,213 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 575 flow [2022-11-18 19:59:36,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2022-11-18 19:59:36,214 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-18 19:59:36,214 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 575 flow [2022-11-18 19:59:36,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 19:59:36,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:36,215 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:36,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:59:36,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:59:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1266606715, now seen corresponding path program 1 times [2022-11-18 19:59:36,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:36,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622660610] [2022-11-18 19:59:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:36,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:36,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622660610] [2022-11-18 19:59:36,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622660610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:36,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:36,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695511043] [2022-11-18 19:59:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:36,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:36,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-18 19:59:36,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 575 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 19:59:36,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:36,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-18 19:59:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:36,820 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [30#t_funENTRYtrue, Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-18 19:59:36,820 INFO L383 tUnfolder$Statistics]: this new event has 198 ancestors and is cut-off event [2022-11-18 19:59:36,820 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-18 19:59:36,820 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-11-18 19:59:36,820 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-18 19:59:36,860 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), 29#L702-6true, Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-18 19:59:36,860 INFO L383 tUnfolder$Statistics]: this new event has 208 ancestors and is cut-off event [2022-11-18 19:59:36,860 INFO L386 tUnfolder$Statistics]: existing Event has 161 ancestors and is cut-off event [2022-11-18 19:59:36,860 INFO L386 tUnfolder$Statistics]: existing Event has 208 ancestors and is cut-off event [2022-11-18 19:59:36,860 INFO L386 tUnfolder$Statistics]: existing Event has 114 ancestors and is cut-off event [2022-11-18 19:59:36,880 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1064] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][128], [Black: 225#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 222#(= |ULTIMATE.start_main_~i~0#1| 0), 240#true, Black: 223#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 235#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 233#(= |t_funThread1of4ForFork0_#t~post5| 0), Black: 232#(= ~global~0 0), 106#L711-5true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 230#true]) [2022-11-18 19:59:36,881 INFO L383 tUnfolder$Statistics]: this new event has 233 ancestors and is cut-off event [2022-11-18 19:59:36,881 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-18 19:59:36,881 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-18 19:59:36,881 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-11-18 19:59:36,884 INFO L130 PetriNetUnfolder]: 164/2690 cut-off events. [2022-11-18 19:59:36,884 INFO L131 PetriNetUnfolder]: For 1166/2810 co-relation queries the response was YES. [2022-11-18 19:59:36,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2690 events. 164/2690 cut-off events. For 1166/2810 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23036 event pairs, 64 based on Foata normal form. 108/2389 useless extension candidates. Maximal degree in co-relation 2644. Up to 205 conditions per place. [2022-11-18 19:59:36,924 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 15 selfloop transitions, 8 changer transitions 0/223 dead transitions. [2022-11-18 19:59:36,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 223 transitions, 619 flow [2022-11-18 19:59:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:59:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 976 transitions. [2022-11-18 19:59:36,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8099585062240664 [2022-11-18 19:59:36,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 976 transitions. [2022-11-18 19:59:36,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 976 transitions. [2022-11-18 19:59:36,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:36,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 976 transitions. [2022-11-18 19:59:36,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:36,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:36,932 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:36,932 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 575 flow. Second operand 5 states and 976 transitions. [2022-11-18 19:59:36,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 223 transitions, 619 flow [2022-11-18 19:59:36,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 223 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:36,939 INFO L231 Difference]: Finished difference. Result has 232 places, 223 transitions, 590 flow [2022-11-18 19:59:36,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=232, PETRI_TRANSITIONS=223} [2022-11-18 19:59:36,940 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 15 predicate places. [2022-11-18 19:59:36,940 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 223 transitions, 590 flow [2022-11-18 19:59:36,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 19:59:36,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:36,941 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:36,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:59:36,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:59:36,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -610101615, now seen corresponding path program 1 times [2022-11-18 19:59:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:36,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043144226] [2022-11-18 19:59:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:37,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043144226] [2022-11-18 19:59:37,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043144226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:37,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169440025] [2022-11-18 19:59:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:37,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:37,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:37,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:37,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df21a384-d1b5-4855-b167-550cd65bb87f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:59:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:59:37,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:37,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:37,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169440025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:37,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:59:37,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:59:37,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898564664] [2022-11-18 19:59:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:59:37,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:59:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:59:37,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-18 19:59:37,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 223 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 19:59:37,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:37,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-18 19:59:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand