./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc --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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- 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-5e519f3 [2022-11-02 20:14:43,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:14:43,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:14:43,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:14:43,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:14:43,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:14:43,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:14:43,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:14:43,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:14:43,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:14:43,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:14:43,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:14:43,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:14:43,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:14:43,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:14:43,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:14:43,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:14:43,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:14:43,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:14:43,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:14:43,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:14:43,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:14:43,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:14:43,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:14:43,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:14:43,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:14:43,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:14:43,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:14:43,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:14:43,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:14:43,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:14:43,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:14:43,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:14:43,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:14:43,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:14:43,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:14:43,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:14:43,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:14:43,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:14:43,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:14:43,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:14:44,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:14:44,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:14:44,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:14:44,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:14:44,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:14:44,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:14:44,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:14:44,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:14:44,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:14:44,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:14:44,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:14:44,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:14:44,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:14:44,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:14:44,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:14:44,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:14:44,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:14:44,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:14:44,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:14:44,049 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:14:44,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:14:44,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:14:44,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:14:44,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:14:44,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:14:44,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:14:44,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:14:44,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:44,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:14:44,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:14:44,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:14:44,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:14:44,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:14:44,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:14:44,054 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_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2022-11-02 20:14:44,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:14:44,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:14:44,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:14:44,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:14:44,403 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:14:44,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-02 20:14:44,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/data/bc12e0bc9/55425a4546a44556903de857d6269b5a/FLAG692b66c3d [2022-11-02 20:14:45,030 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:14:45,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i [2022-11-02 20:14:45,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/data/bc12e0bc9/55425a4546a44556903de857d6269b5a/FLAG692b66c3d [2022-11-02 20:14:45,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/data/bc12e0bc9/55425a4546a44556903de857d6269b5a [2022-11-02 20:14:45,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:14:45,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:14:45,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:45,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:14:45,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:14:45,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30890c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45, skipping insertion in model container [2022-11-02 20:14:45,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:14:45,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:45,713 WARN L230 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_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-02 20:14:45,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:45,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:14:45,810 WARN L230 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_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/sv-benchmarks/c/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2022-11-02 20:14:45,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:45,877 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:14:45,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45 WrapperNode [2022-11-02 20:14:45,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:45,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:45,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:14:45,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:14:45,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,949 INFO L138 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2022-11-02 20:14:45,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:45,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:14:45,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:14:45,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:14:45,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:45,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:46,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:14:46,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:14:46,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:14:46,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:14:46,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (1/1) ... [2022-11-02 20:14:46,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:46,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:46,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:14:46,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b0ea76-4335-4e1d-80a2-a4d94ee3f269/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:14:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-02 20:14:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-02 20:14:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:14:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:14:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:14:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:14:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:14:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:14:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:14:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:14:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:14:46,089 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:14:46,345 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:14:46,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:14:46,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:14:46,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:14:46,678 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:14:46,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:46 BoogieIcfgContainer [2022-11-02 20:14:46,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:14:46,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:14:46,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:14:46,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:14:46,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:14:45" (1/3) ... [2022-11-02 20:14:46,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b159109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:46, skipping insertion in model container [2022-11-02 20:14:46,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:45" (2/3) ... [2022-11-02 20:14:46,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b159109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:46, skipping insertion in model container [2022-11-02 20:14:46,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:46" (3/3) ... [2022-11-02 20:14:46,696 INFO L112 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2022-11-02 20:14:46,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:14:46,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:14:46,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:14:46,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:14:46,827 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:14:46,875 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:14:46,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 102 transitions, 214 flow [2022-11-02 20:14:46,904 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 102 transitions, 214 flow [2022-11-02 20:14:46,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 102 transitions, 214 flow [2022-11-02 20:14:46,971 INFO L130 PetriNetUnfolder]: 13/112 cut-off events. [2022-11-02 20:14:46,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:14:46,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 112 events. 13/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 282 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-02 20:14:46,987 INFO L118 LiptonReduction]: Number of co-enabled transitions 3484 [2022-11-02 20:14:50,064 INFO L133 LiptonReduction]: Checked pairs total: 4872 [2022-11-02 20:14:50,064 INFO L135 LiptonReduction]: Total number of compositions: 93 [2022-11-02 20:14:50,085 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 36 transitions, 82 flow [2022-11-02 20:14:50,202 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 575 states, 542 states have (on average 3.2896678966789668) internal successors, (1783), 574 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:50,235 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=FINITE_AUTOMATA, 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;@4a7e3be7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:50,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-02 20:14:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 575 states, 542 states have (on average 3.2896678966789668) internal successors, (1783), 574 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:14:50,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:50,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:14:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash 600742502, now seen corresponding path program 1 times [2022-11-02 20:14:50,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:50,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145673804] [2022-11-02 20:14:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:50,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:50,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145673804] [2022-11-02 20:14:50,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145673804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:50,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:50,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:14:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456973423] [2022-11-02 20:14:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:50,668 INFO L87 Difference]: Start difference. First operand has 575 states, 542 states have (on average 3.2896678966789668) internal successors, (1783), 574 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:50,821 INFO L93 Difference]: Finished difference Result 552 states and 1622 transitions. [2022-11-02 20:14:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:50,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:14:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:50,843 INFO L225 Difference]: With dead ends: 552 [2022-11-02 20:14:50,843 INFO L226 Difference]: Without dead ends: 552 [2022-11-02 20:14:50,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:50,847 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:50,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-02 20:14:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 540. [2022-11-02 20:14:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 525 states have (on average 3.057142857142857) internal successors, (1605), 539 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1605 transitions. [2022-11-02 20:14:50,941 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1605 transitions. Word has length 7 [2022-11-02 20:14:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:50,942 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 1605 transitions. [2022-11-02 20:14:50,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1605 transitions. [2022-11-02 20:14:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:14:50,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:50,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:14:50,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:14:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1443249260, now seen corresponding path program 1 times [2022-11-02 20:14:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:50,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176895362] [2022-11-02 20:14:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:14:50,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:14:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:14:51,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:14:51,040 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:14:51,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-02 20:14:51,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-02 20:14:51,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-02 20:14:51,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-02 20:14:51,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-02 20:14:51,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-02 20:14:51,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-02 20:14:51,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2022-11-02 20:14:51,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-02 20:14:51,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-02 20:14:51,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-02 20:14:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-02 20:14:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-02 20:14:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-02 20:14:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:14:51,050 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:14:51,052 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:14:51,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:14:51,078 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:14:51,081 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:14:51,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 166 transitions, 356 flow [2022-11-02 20:14:51,081 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 166 transitions, 356 flow [2022-11-02 20:14:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 166 transitions, 356 flow [2022-11-02 20:14:51,117 INFO L130 PetriNetUnfolder]: 17/142 cut-off events. [2022-11-02 20:14:51,117 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:14:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 142 events. 17/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 386 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-11-02 20:14:51,125 INFO L118 LiptonReduction]: Number of co-enabled transitions 6040 [2022-11-02 20:14:55,397 INFO L133 LiptonReduction]: Checked pairs total: 16363 [2022-11-02 20:14:55,398 INFO L135 LiptonReduction]: Total number of compositions: 151 [2022-11-02 20:14:55,399 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 63 transitions, 150 flow [2022-11-02 20:14:55,829 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9051 states, 8938 states have (on average 4.242671738643992) internal successors, (37921), 9050 states have internal predecessors, (37921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:55,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:55,842 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=FINITE_AUTOMATA, 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;@4a7e3be7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:55,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-02 20:14:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 9051 states, 8938 states have (on average 4.242671738643992) internal successors, (37921), 9050 states have internal predecessors, (37921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:14:55,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:55,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:55,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:14:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1465644877, now seen corresponding path program 1 times [2022-11-02 20:14:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:55,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312961458] [2022-11-02 20:14:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:55,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312961458] [2022-11-02 20:14:55,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312961458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:55,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:55,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:55,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414652254] [2022-11-02 20:14:55,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:55,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:55,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:55,987 INFO L87 Difference]: Start difference. First operand has 9051 states, 8938 states have (on average 4.242671738643992) internal successors, (37921), 9050 states have internal predecessors, (37921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:56,188 INFO L93 Difference]: Finished difference Result 3295 states and 11613 transitions. [2022-11-02 20:14:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:14:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:56,253 INFO L225 Difference]: With dead ends: 3295 [2022-11-02 20:14:56,253 INFO L226 Difference]: Without dead ends: 3295 [2022-11-02 20:14:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:56,257 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:56,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 34 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-11-02 20:14:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3295. [2022-11-02 20:14:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3270 states have (on average 3.5513761467889906) internal successors, (11613), 3294 states have internal predecessors, (11613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 11613 transitions. [2022-11-02 20:14:56,499 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 11613 transitions. Word has length 7 [2022-11-02 20:14:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:56,500 INFO L495 AbstractCegarLoop]: Abstraction has 3295 states and 11613 transitions. [2022-11-02 20:14:56,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 11613 transitions. [2022-11-02 20:14:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:14:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:56,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:56,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:14:56,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:14:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1090918255, now seen corresponding path program 1 times [2022-11-02 20:14:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630010224] [2022-11-02 20:14:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630010224] [2022-11-02 20:14:56,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630010224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:56,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:56,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:14:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464856594] [2022-11-02 20:14:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:56,619 INFO L87 Difference]: Start difference. First operand 3295 states and 11613 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:56,822 INFO L93 Difference]: Finished difference Result 4578 states and 15680 transitions. [2022-11-02 20:14:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:14:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:56,861 INFO L225 Difference]: With dead ends: 4578 [2022-11-02 20:14:56,861 INFO L226 Difference]: Without dead ends: 4578 [2022-11-02 20:14:56,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:56,866 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:56,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 37 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2022-11-02 20:14:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 4308. [2022-11-02 20:14:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4283 states have (on average 3.5159934625262665) internal successors, (15059), 4307 states have internal predecessors, (15059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 15059 transitions. [2022-11-02 20:14:57,131 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 15059 transitions. Word has length 8 [2022-11-02 20:14:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 15059 transitions. [2022-11-02 20:14:57,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 15059 transitions. [2022-11-02 20:14:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:14:57,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:57,142 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:57,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:14:57,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-02 20:14:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash 510600269, now seen corresponding path program 1 times [2022-11-02 20:14:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:57,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432354275] [2022-11-02 20:14:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:57,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:14:57,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:14:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:14:57,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:14:57,225 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:14:57,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2022-11-02 20:14:57,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2022-11-02 20:14:57,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2022-11-02 20:14:57,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2022-11-02 20:14:57,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2022-11-02 20:14:57,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2022-11-02 20:14:57,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2022-11-02 20:14:57,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2022-11-02 20:14:57,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2022-11-02 20:14:57,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2022-11-02 20:14:57,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2022-11-02 20:14:57,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2022-11-02 20:14:57,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2022-11-02 20:14:57,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2022-11-02 20:14:57,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2022-11-02 20:14:57,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2022-11-02 20:14:57,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2022-11-02 20:14:57,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2022-11-02 20:14:57,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2022-11-02 20:14:57,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2022-11-02 20:14:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:14:57,237 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:14:57,238 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:14:57,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:14:57,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:14:57,339 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:14:57,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 230 transitions, 502 flow [2022-11-02 20:14:57,340 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 230 transitions, 502 flow [2022-11-02 20:14:57,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 502 flow [2022-11-02 20:14:57,413 INFO L130 PetriNetUnfolder]: 21/172 cut-off events. [2022-11-02 20:14:57,414 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:14:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 172 events. 21/172 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 473 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-11-02 20:14:57,429 INFO L118 LiptonReduction]: Number of co-enabled transitions 9140 [2022-11-02 20:15:02,842 INFO L133 LiptonReduction]: Checked pairs total: 25694 [2022-11-02 20:15:02,843 INFO L135 LiptonReduction]: Total number of compositions: 218 [2022-11-02 20:15:02,843 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 83 transitions, 208 flow [2022-11-02 20:15:05,984 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81840 states, 81499 states have (on average 5.262972551810452) internal successors, (428927), 81839 states have internal predecessors, (428927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:05,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:15:05,987 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=FINITE_AUTOMATA, 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;@4a7e3be7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:15:05,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-02 20:15:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 81840 states, 81499 states have (on average 5.262972551810452) internal successors, (428927), 81839 states have internal predecessors, (428927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:15:06,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:06,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:06,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash -131212182, now seen corresponding path program 1 times [2022-11-02 20:15:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:06,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523630565] [2022-11-02 20:15:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:06,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:06,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:06,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523630565] [2022-11-02 20:15:06,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523630565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:06,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:06,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:15:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975532453] [2022-11-02 20:15:06,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:06,650 INFO L87 Difference]: Start difference. First operand has 81840 states, 81499 states have (on average 5.262972551810452) internal successors, (428927), 81839 states have internal predecessors, (428927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:07,939 INFO L93 Difference]: Finished difference Result 35707 states and 163471 transitions. [2022-11-02 20:15:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:15:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:08,452 INFO L225 Difference]: With dead ends: 35707 [2022-11-02 20:15:08,453 INFO L226 Difference]: Without dead ends: 35707 [2022-11-02 20:15:08,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:08,455 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:08,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 42 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35707 states. [2022-11-02 20:15:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35707 to 35707. [2022-11-02 20:15:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35707 states, 35612 states have (on average 4.5903347186341685) internal successors, (163471), 35706 states have internal predecessors, (163471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35707 states to 35707 states and 163471 transitions. [2022-11-02 20:15:10,945 INFO L78 Accepts]: Start accepts. Automaton has 35707 states and 163471 transitions. Word has length 7 [2022-11-02 20:15:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:10,946 INFO L495 AbstractCegarLoop]: Abstraction has 35707 states and 163471 transitions. [2022-11-02 20:15:10,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 35707 states and 163471 transitions. [2022-11-02 20:15:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:15:10,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:10,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:10,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:15:10,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 970128314, now seen corresponding path program 1 times [2022-11-02 20:15:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:10,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260163490] [2022-11-02 20:15:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:11,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:11,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260163490] [2022-11-02 20:15:11,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260163490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:11,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:11,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:15:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935558476] [2022-11-02 20:15:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:11,016 INFO L87 Difference]: Start difference. First operand 35707 states and 163471 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:11,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:11,431 INFO L93 Difference]: Finished difference Result 25042 states and 107493 transitions. [2022-11-02 20:15:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:11,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:15:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:11,668 INFO L225 Difference]: With dead ends: 25042 [2022-11-02 20:15:11,668 INFO L226 Difference]: Without dead ends: 25042 [2022-11-02 20:15:11,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:11,670 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:11,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25042 states. [2022-11-02 20:15:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25042 to 25042. [2022-11-02 20:15:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25042 states, 24947 states have (on average 4.308854772116888) internal successors, (107493), 25041 states have internal predecessors, (107493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25042 states to 25042 states and 107493 transitions. [2022-11-02 20:15:13,112 INFO L78 Accepts]: Start accepts. Automaton has 25042 states and 107493 transitions. Word has length 8 [2022-11-02 20:15:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:13,112 INFO L495 AbstractCegarLoop]: Abstraction has 25042 states and 107493 transitions. [2022-11-02 20:15:13,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 25042 states and 107493 transitions. [2022-11-02 20:15:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:15:13,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:13,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:13,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:15:13,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 259578406, now seen corresponding path program 1 times [2022-11-02 20:15:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:13,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104950244] [2022-11-02 20:15:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104950244] [2022-11-02 20:15:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104950244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:13,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:13,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:15:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724627196] [2022-11-02 20:15:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:13,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:13,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:13,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:13,190 INFO L87 Difference]: Start difference. First operand 25042 states and 107493 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:13,474 INFO L93 Difference]: Finished difference Result 25097 states and 105880 transitions. [2022-11-02 20:15:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:15:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:13,645 INFO L225 Difference]: With dead ends: 25097 [2022-11-02 20:15:13,646 INFO L226 Difference]: Without dead ends: 25097 [2022-11-02 20:15:13,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:15:13,647 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:13,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 44 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25097 states. [2022-11-02 20:15:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25097 to 24492. [2022-11-02 20:15:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24492 states, 24397 states have (on average 4.274541951879329) internal successors, (104286), 24491 states have internal predecessors, (104286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24492 states to 24492 states and 104286 transitions. [2022-11-02 20:15:15,143 INFO L78 Accepts]: Start accepts. Automaton has 24492 states and 104286 transitions. Word has length 11 [2022-11-02 20:15:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:15,144 INFO L495 AbstractCegarLoop]: Abstraction has 24492 states and 104286 transitions. [2022-11-02 20:15:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 24492 states and 104286 transitions. [2022-11-02 20:15:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:15:15,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:15,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:15:15,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1997115849, now seen corresponding path program 1 times [2022-11-02 20:15:15,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:15,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754421359] [2022-11-02 20:15:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754421359] [2022-11-02 20:15:15,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754421359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:15,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:15,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452380403] [2022-11-02 20:15:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:15,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:15,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:15,207 INFO L87 Difference]: Start difference. First operand 24492 states and 104286 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:16,070 INFO L93 Difference]: Finished difference Result 31062 states and 130297 transitions. [2022-11-02 20:15:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:15:16,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:15:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:16,287 INFO L225 Difference]: With dead ends: 31062 [2022-11-02 20:15:16,288 INFO L226 Difference]: Without dead ends: 31062 [2022-11-02 20:15:16,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:16,289 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:16,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 77 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31062 states. [2022-11-02 20:15:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31062 to 28631. [2022-11-02 20:15:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28631 states, 28524 states have (on average 4.312053007993269) internal successors, (122997), 28630 states have internal predecessors, (122997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28631 states to 28631 states and 122997 transitions. [2022-11-02 20:15:17,690 INFO L78 Accepts]: Start accepts. Automaton has 28631 states and 122997 transitions. Word has length 17 [2022-11-02 20:15:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:17,691 INFO L495 AbstractCegarLoop]: Abstraction has 28631 states and 122997 transitions. [2022-11-02 20:15:17,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 28631 states and 122997 transitions. [2022-11-02 20:15:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:15:17,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:17,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:15:17,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1997115850, now seen corresponding path program 1 times [2022-11-02 20:15:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:17,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221146584] [2022-11-02 20:15:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:17,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:17,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221146584] [2022-11-02 20:15:17,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221146584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:17,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:17,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:15:17,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489581187] [2022-11-02 20:15:17,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:15:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:15:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:17,762 INFO L87 Difference]: Start difference. First operand 28631 states and 122997 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:18,125 INFO L93 Difference]: Finished difference Result 26790 states and 112801 transitions. [2022-11-02 20:15:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:15:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:15:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:18,332 INFO L225 Difference]: With dead ends: 26790 [2022-11-02 20:15:18,332 INFO L226 Difference]: Without dead ends: 26790 [2022-11-02 20:15:18,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:18,334 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 91 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:18,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 59 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26790 states. [2022-11-02 20:15:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26790 to 24342. [2022-11-02 20:15:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24342 states, 24295 states have (on average 4.3607738217740275) internal successors, (105945), 24341 states have internal predecessors, (105945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24342 states to 24342 states and 105945 transitions. [2022-11-02 20:15:19,625 INFO L78 Accepts]: Start accepts. Automaton has 24342 states and 105945 transitions. Word has length 17 [2022-11-02 20:15:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:19,625 INFO L495 AbstractCegarLoop]: Abstraction has 24342 states and 105945 transitions. [2022-11-02 20:15:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24342 states and 105945 transitions. [2022-11-02 20:15:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:15:19,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:19,628 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:19,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:15:19,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-02 20:15:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 438888602, now seen corresponding path program 1 times [2022-11-02 20:15:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471096980] [2022-11-02 20:15:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:19,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:15:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:19,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:15:19,662 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:15:19,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-02 20:15:19,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-02 20:15:19,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-02 20:15:19,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-02 20:15:19,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-02 20:15:19,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-02 20:15:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-02 20:15:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2022-11-02 20:15:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-02 20:15:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-02 20:15:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-02 20:15:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-02 20:15:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-02 20:15:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2022-11-02 20:15:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-02 20:15:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-02 20:15:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-02 20:15:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-02 20:15:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-02 20:15:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-02 20:15:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-02 20:15:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-02 20:15:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-02 20:15:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-02 20:15:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-02 20:15:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-02 20:15:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:15:19,669 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:15:19,669 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:15:19,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:15:19,702 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:15:19,705 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:15:19,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 294 transitions, 652 flow [2022-11-02 20:15:19,705 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 294 transitions, 652 flow [2022-11-02 20:15:19,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 294 transitions, 652 flow [2022-11-02 20:15:19,757 INFO L130 PetriNetUnfolder]: 25/202 cut-off events. [2022-11-02 20:15:19,758 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:15:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 202 events. 25/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 222. Up to 10 conditions per place. [2022-11-02 20:15:19,771 INFO L118 LiptonReduction]: Number of co-enabled transitions 12784 [2022-11-02 20:15:26,922 INFO L133 LiptonReduction]: Checked pairs total: 42669 [2022-11-02 20:15:26,922 INFO L135 LiptonReduction]: Total number of compositions: 289 [2022-11-02 20:15:26,924 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 105 transitions, 274 flow