./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:02:15,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:02:15,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:02:15,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:02:15,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:02:15,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:02:15,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:02:15,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:02:15,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:02:15,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:02:15,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:02:15,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:02:15,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:02:15,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:02:15,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:02:15,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:02:15,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:02:15,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:02:15,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:02:15,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:02:15,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:02:15,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:02:15,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:02:15,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:02:15,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:02:15,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:02:15,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:02:15,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:02:15,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:02:15,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:02:15,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:02:15,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:02:15,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:02:15,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:02:15,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:02:15,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:02:15,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:02:15,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:02:15,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:02:15,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:02:15,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:02:15,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:02:16,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:02:16,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:02:16,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:02:16,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:02:16,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:02:16,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:02:16,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:02:16,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:02:16,033 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:02:16,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:02:16,034 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:02:16,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:02:16,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:02:16,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:02:16,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:02:16,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:02:16,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:02:16,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:02:16,036 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:02:16,036 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:02:16,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:02:16,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:02:16,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:02:16,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:02:16,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:02:16,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:02:16,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:16,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:02:16,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:02:16,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:02:16,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:02:16,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:02:16,041 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:02:16,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:02:16,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:02:16,042 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_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2022-11-18 21:02:16,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:02:16,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:02:16,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:02:16,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:02:16,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:02:16,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-18 21:02:16,435 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/data/f2b6bd09d/d473195957d9446caa772eb329eda864/FLAG1ab516555 [2022-11-18 21:02:17,080 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:02:17,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-18 21:02:17,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/data/f2b6bd09d/d473195957d9446caa772eb329eda864/FLAG1ab516555 [2022-11-18 21:02:17,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/data/f2b6bd09d/d473195957d9446caa772eb329eda864 [2022-11-18 21:02:17,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:02:17,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:02:17,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:17,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:02:17,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:02:17,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:17" (1/1) ... [2022-11-18 21:02:17,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d96d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:17, skipping insertion in model container [2022-11-18 21:02:17,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:17" (1/1) ... [2022-11-18 21:02:17,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:02:17,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:02:18,045 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-18 21:02:18,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:18,120 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:02:18,151 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-18 21:02:18,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:18,229 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:02:18,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18 WrapperNode [2022-11-18 21:02:18,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:18,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:18,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:02:18,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:02:18,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,323 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 359 [2022-11-18 21:02:18,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:18,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:02:18,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:02:18,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:02:18,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:02:18,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:02:18,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:02:18,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:02:18,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (1/1) ... [2022-11-18 21:02:18,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:18,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:02:18,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:02:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:02:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:02:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 21:02:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 21:02:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:02:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:02:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 21:02:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 21:02:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:02:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 21:02:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:02:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:02:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:02:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-18 21:02:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-18 21:02:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:02:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:02:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:02:18,475 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:02:18,644 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:02:18,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:02:19,411 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:02:19,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:02:19,427 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-11-18 21:02:19,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:19 BoogieIcfgContainer [2022-11-18 21:02:19,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:02:19,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:02:19,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:02:19,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:02:19,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:17" (1/3) ... [2022-11-18 21:02:19,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8c3081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:19, skipping insertion in model container [2022-11-18 21:02:19,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:18" (2/3) ... [2022-11-18 21:02:19,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8c3081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:19, skipping insertion in model container [2022-11-18 21:02:19,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:19" (3/3) ... [2022-11-18 21:02:19,452 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2022-11-18 21:02:19,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:02:19,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:02:19,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-18 21:02:19,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:02:19,642 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-18 21:02:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 401 transitions, 844 flow [2022-11-18 21:02:20,214 INFO L130 PetriNetUnfolder]: 164/1253 cut-off events. [2022-11-18 21:02:20,215 INFO L131 PetriNetUnfolder]: For 36/59 co-relation queries the response was YES. [2022-11-18 21:02:20,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 1253 events. 164/1253 cut-off events. For 36/59 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8101 event pairs, 0 based on Foata normal form. 0/1005 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-11-18 21:02:20,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 401 transitions, 844 flow [2022-11-18 21:02:20,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 401 transitions, 844 flow [2022-11-18 21:02:20,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:20,309 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7491a152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:20,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-18 21:02:20,326 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-11-18 21:02:20,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:02:20,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:20,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:20,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-18 21:02:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2081197414, now seen corresponding path program 1 times [2022-11-18 21:02:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226026663] [2022-11-18 21:02:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:20,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226026663] [2022-11-18 21:02:21,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226026663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:21,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:21,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:21,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384592764] [2022-11-18 21:02:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:21,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:21,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 401 [2022-11-18 21:02:21,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 401 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:21,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:21,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 401 [2022-11-18 21:02:21,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:21,573 INFO L130 PetriNetUnfolder]: 41/809 cut-off events. [2022-11-18 21:02:21,574 INFO L131 PetriNetUnfolder]: For 136/228 co-relation queries the response was YES. [2022-11-18 21:02:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 809 events. 41/809 cut-off events. For 136/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4659 event pairs, 0 based on Foata normal form. 274/975 useless extension candidates. Maximal degree in co-relation 579. Up to 45 conditions per place. [2022-11-18 21:02:21,593 INFO L137 encePairwiseOnDemand]: 364/401 looper letters, 20 selfloop transitions, 4 changer transitions 0/369 dead transitions. [2022-11-18 21:02:21,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 369 transitions, 828 flow [2022-11-18 21:02:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1783 transitions. [2022-11-18 21:02:21,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892768079800498 [2022-11-18 21:02:21,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1783 transitions. [2022-11-18 21:02:21,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1783 transitions. [2022-11-18 21:02:21,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:21,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1783 transitions. [2022-11-18 21:02:21,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 356.6) internal successors, (1783), 5 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) [2022-11-18 21:02:21,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:21,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:21,666 INFO L175 Difference]: Start difference. First operand has 363 places, 401 transitions, 844 flow. Second operand 5 states and 1783 transitions. [2022-11-18 21:02:21,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 369 transitions, 828 flow [2022-11-18 21:02:21,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 369 transitions, 828 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:02:21,688 INFO L231 Difference]: Finished difference. Result has 364 places, 367 transitions, 788 flow [2022-11-18 21:02:21,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=788, PETRI_PLACES=364, PETRI_TRANSITIONS=367} [2022-11-18 21:02:21,701 INFO L288 CegarLoopForPetriNet]: 363 programPoint places, 1 predicate places. [2022-11-18 21:02:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 367 transitions, 788 flow [2022-11-18 21:02:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:21,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:21,705 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:21,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:02:21,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-18 21:02:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash -241997732, now seen corresponding path program 1 times [2022-11-18 21:02:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569472720] [2022-11-18 21:02:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:21,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:21,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:02:21,933 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:02:21,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-18 21:02:21,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-18 21:02:21,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-18 21:02:21,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-18 21:02:21,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-18 21:02:21,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-18 21:02:21,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-18 21:02:21,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-18 21:02:21,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-18 21:02:21,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-18 21:02:21,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-18 21:02:21,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-18 21:02:21,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-18 21:02:21,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-18 21:02:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-18 21:02:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-18 21:02:21,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-18 21:02:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-18 21:02:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-18 21:02:21,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-18 21:02:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-18 21:02:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 31 remaining) [2022-11-18 21:02:21,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 31 remaining) [2022-11-18 21:02:21,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-18 21:02:21,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-18 21:02:21,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-18 21:02:21,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-18 21:02:21,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-18 21:02:21,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-18 21:02:21,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-18 21:02:21,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-18 21:02:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:02:21,962 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 21:02:21,966 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:02:21,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 21:02:22,102 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-18 21:02:22,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 637 transitions, 1364 flow [2022-11-18 21:02:26,500 INFO L130 PetriNetUnfolder]: 1130/6634 cut-off events. [2022-11-18 21:02:26,500 INFO L131 PetriNetUnfolder]: For 602/691 co-relation queries the response was YES. [2022-11-18 21:02:26,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7308 conditions, 6634 events. 1130/6634 cut-off events. For 602/691 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 63947 event pairs, 22 based on Foata normal form. 0/5281 useless extension candidates. Maximal degree in co-relation 4064. Up to 192 conditions per place. [2022-11-18 21:02:26,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 566 places, 637 transitions, 1364 flow [2022-11-18 21:02:27,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 566 places, 637 transitions, 1364 flow [2022-11-18 21:02:27,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:27,065 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7491a152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:27,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-18 21:02:27,074 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2022-11-18 21:02:27,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:02:27,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:27,075 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:27,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 21:02:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1310771517, now seen corresponding path program 1 times [2022-11-18 21:02:27,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:27,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788655588] [2022-11-18 21:02:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:27,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788655588] [2022-11-18 21:02:27,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788655588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:27,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:27,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543549302] [2022-11-18 21:02:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:27,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-18 21:02:27,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 637 transitions, 1364 flow. Second operand has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:27,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-18 21:02:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:30,132 INFO L130 PetriNetUnfolder]: 578/5255 cut-off events. [2022-11-18 21:02:30,132 INFO L131 PetriNetUnfolder]: For 1977/2909 co-relation queries the response was YES. [2022-11-18 21:02:30,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 5255 events. 578/5255 cut-off events. For 1977/2909 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51242 event pairs, 18 based on Foata normal form. 4777/9215 useless extension candidates. Maximal degree in co-relation 3956. Up to 609 conditions per place. [2022-11-18 21:02:30,331 INFO L137 encePairwiseOnDemand]: 576/637 looper letters, 39 selfloop transitions, 4 changer transitions 0/586 dead transitions. [2022-11-18 21:02:30,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 586 transitions, 1348 flow [2022-11-18 21:02:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2816 transitions. [2022-11-18 21:02:30,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841444270015698 [2022-11-18 21:02:30,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2816 transitions. [2022-11-18 21:02:30,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2816 transitions. [2022-11-18 21:02:30,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:30,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2816 transitions. [2022-11-18 21:02:30,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 563.2) internal successors, (2816), 5 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,361 INFO L175 Difference]: Start difference. First operand has 566 places, 637 transitions, 1364 flow. Second operand 5 states and 2816 transitions. [2022-11-18 21:02:30,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 586 transitions, 1348 flow [2022-11-18 21:02:30,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 586 transitions, 1348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:02:30,380 INFO L231 Difference]: Finished difference. Result has 569 places, 582 transitions, 1280 flow [2022-11-18 21:02:30,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=569, PETRI_TRANSITIONS=582} [2022-11-18 21:02:30,382 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 3 predicate places. [2022-11-18 21:02:30,383 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 582 transitions, 1280 flow [2022-11-18 21:02:30,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.75) internal successors, (2179), 4 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:30,385 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:30,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:02:30,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 21:02:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash -410994612, now seen corresponding path program 1 times [2022-11-18 21:02:30,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:30,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217610359] [2022-11-18 21:02:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:30,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217610359] [2022-11-18 21:02:30,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217610359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:30,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:30,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:02:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032804477] [2022-11-18 21:02:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:30,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-18 21:02:30,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 582 transitions, 1280 flow. Second operand has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:30,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-18 21:02:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:33,388 INFO L130 PetriNetUnfolder]: 578/5254 cut-off events. [2022-11-18 21:02:33,389 INFO L131 PetriNetUnfolder]: For 1982/2899 co-relation queries the response was YES. [2022-11-18 21:02:33,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 5254 events. 578/5254 cut-off events. For 1982/2899 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51353 event pairs, 18 based on Foata normal form. 19/4460 useless extension candidates. Maximal degree in co-relation 6426. Up to 598 conditions per place. [2022-11-18 21:02:33,582 INFO L137 encePairwiseOnDemand]: 631/637 looper letters, 31 selfloop transitions, 8 changer transitions 0/582 dead transitions. [2022-11-18 21:02:33,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 582 transitions, 1356 flow [2022-11-18 21:02:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2752 transitions. [2022-11-18 21:02:33,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640502354788069 [2022-11-18 21:02:33,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2752 transitions. [2022-11-18 21:02:33,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2752 transitions. [2022-11-18 21:02:33,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:33,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2752 transitions. [2022-11-18 21:02:33,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 550.4) internal successors, (2752), 5 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,607 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 637.0) internal successors, (3822), 6 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,608 INFO L175 Difference]: Start difference. First operand has 569 places, 582 transitions, 1280 flow. Second operand 5 states and 2752 transitions. [2022-11-18 21:02:33,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 582 transitions, 1356 flow [2022-11-18 21:02:33,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 582 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:02:33,620 INFO L231 Difference]: Finished difference. Result has 572 places, 582 transitions, 1298 flow [2022-11-18 21:02:33,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=572, PETRI_TRANSITIONS=582} [2022-11-18 21:02:33,622 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 6 predicate places. [2022-11-18 21:02:33,622 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 582 transitions, 1298 flow [2022-11-18 21:02:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 546.75) internal successors, (2187), 4 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:33,624 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:33,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:02:33,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 21:02:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash 144070262, now seen corresponding path program 1 times [2022-11-18 21:02:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:33,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763857554] [2022-11-18 21:02:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:33,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763857554] [2022-11-18 21:02:33,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763857554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456377269] [2022-11-18 21:02:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:33,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:33,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:33,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:02:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:34,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:34,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:34,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456377269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:34,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:34,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:02:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066660063] [2022-11-18 21:02:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:34,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:34,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-18 21:02:34,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 582 transitions, 1298 flow. Second operand has 6 states, 6 states have (on average 545.6666666666666) internal successors, (3274), 6 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:34,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:34,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-18 21:02:34,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:36,645 INFO L130 PetriNetUnfolder]: 578/5253 cut-off events. [2022-11-18 21:02:36,645 INFO L131 PetriNetUnfolder]: For 1988/2890 co-relation queries the response was YES. [2022-11-18 21:02:36,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6542 conditions, 5253 events. 578/5253 cut-off events. For 1988/2890 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51281 event pairs, 18 based on Foata normal form. 16/4456 useless extension candidates. Maximal degree in co-relation 3972. Up to 601 conditions per place. [2022-11-18 21:02:36,857 INFO L137 encePairwiseOnDemand]: 632/637 looper letters, 35 selfloop transitions, 6 changer transitions 0/584 dead transitions. [2022-11-18 21:02:36,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 584 transitions, 1382 flow [2022-11-18 21:02:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:02:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3843 transitions. [2022-11-18 21:02:36,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618524332810047 [2022-11-18 21:02:36,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3843 transitions. [2022-11-18 21:02:36,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3843 transitions. [2022-11-18 21:02:36,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:36,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3843 transitions. [2022-11-18 21:02:36,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 549.0) internal successors, (3843), 7 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 637.0) internal successors, (5096), 8 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 637.0) internal successors, (5096), 8 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,916 INFO L175 Difference]: Start difference. First operand has 572 places, 582 transitions, 1298 flow. Second operand 7 states and 3843 transitions. [2022-11-18 21:02:36,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 584 transitions, 1382 flow [2022-11-18 21:02:36,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 584 transitions, 1370 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:02:36,933 INFO L231 Difference]: Finished difference. Result has 574 places, 581 transitions, 1294 flow [2022-11-18 21:02:36,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=574, PETRI_TRANSITIONS=581} [2022-11-18 21:02:36,936 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, 8 predicate places. [2022-11-18 21:02:36,936 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 581 transitions, 1294 flow [2022-11-18 21:02:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.6666666666666) internal successors, (3274), 6 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:36,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:36,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:37,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:37,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 21:02:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1915375658, now seen corresponding path program 1 times [2022-11-18 21:02:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:37,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79715002] [2022-11-18 21:02:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79715002] [2022-11-18 21:02:37,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79715002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:37,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885573195] [2022-11-18 21:02:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:37,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:37,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:37,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:37,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:02:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:37,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:02:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:37,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:37,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885573195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:37,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:02:37,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 21:02:37,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922804937] [2022-11-18 21:02:37,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:37,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:02:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:37,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:02:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:37,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 637 [2022-11-18 21:02:37,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 581 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 546.0) internal successors, (5460), 10 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:37,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 637 [2022-11-18 21:02:37,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:37,799 INFO L130 PetriNetUnfolder]: 0/153 cut-off events. [2022-11-18 21:02:37,799 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 21:02:37,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 153 events. 0/153 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 107 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-18 21:02:37,800 INFO L137 encePairwiseOnDemand]: 632/637 looper letters, 13 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2022-11-18 21:02:37,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 147 transitions, 388 flow [2022-11-18 21:02:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:02:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4909 transitions. [2022-11-18 21:02:37,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562707134135705 [2022-11-18 21:02:37,813 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4909 transitions. [2022-11-18 21:02:37,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4909 transitions. [2022-11-18 21:02:37,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:37,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4909 transitions. [2022-11-18 21:02:37,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 545.4444444444445) internal successors, (4909), 9 states have internal predecessors, (4909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 637.0) internal successors, (6370), 10 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 637.0) internal successors, (6370), 10 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,845 INFO L175 Difference]: Start difference. First operand has 574 places, 581 transitions, 1294 flow. Second operand 9 states and 4909 transitions. [2022-11-18 21:02:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 147 transitions, 388 flow [2022-11-18 21:02:37,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 147 transitions, 371 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 21:02:37,849 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 333 flow [2022-11-18 21:02:37,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2022-11-18 21:02:37,854 INFO L288 CegarLoopForPetriNet]: 566 programPoint places, -403 predicate places. [2022-11-18 21:02:37,854 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 333 flow [2022-11-18 21:02:37,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 546.0) internal successors, (5460), 10 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:37,857 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:37,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b034d-1c7b-44f1-a6ea-d16b9a75d2db/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:02:38,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 21:02:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -522110558, now seen corresponding path program 1 times [2022-11-18 21:02:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:38,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610326854] [2022-11-18 21:02:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:38,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:38,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:02:38,182 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:02:38,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2022-11-18 21:02:38,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-18 21:02:38,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-18 21:02:38,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-18 21:02:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-18 21:02:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-18 21:02:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-18 21:02:38,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-18 21:02:38,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-18 21:02:38,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-18 21:02:38,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-18 21:02:38,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-18 21:02:38,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-18 21:02:38,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-18 21:02:38,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-18 21:02:38,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-18 21:02:38,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-18 21:02:38,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-18 21:02:38,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2022-11-18 21:02:38,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2022-11-18 21:02:38,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2022-11-18 21:02:38,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 39 remaining) [2022-11-18 21:02:38,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2022-11-18 21:02:38,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-18 21:02:38,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-18 21:02:38,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-18 21:02:38,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-18 21:02:38,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-18 21:02:38,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-18 21:02:38,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-18 21:02:38,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-18 21:02:38,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-18 21:02:38,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-18 21:02:38,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-18 21:02:38,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-18 21:02:38,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-18 21:02:38,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-18 21:02:38,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-18 21:02:38,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-18 21:02:38,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:02:38,197 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 21:02:38,198 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 21:02:38,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 21:02:38,480 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2022-11-18 21:02:38,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 769 places, 873 transitions, 1890 flow [2022-11-18 21:03:05,026 INFO L130 PetriNetUnfolder]: 8984/38697 cut-off events. [2022-11-18 21:03:05,027 INFO L131 PetriNetUnfolder]: For 7059/7268 co-relation queries the response was YES. [2022-11-18 21:03:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45871 conditions, 38697 events. 8984/38697 cut-off events. For 7059/7268 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 461554 event pairs, 1024 based on Foata normal form. 0/31117 useless extension candidates. Maximal degree in co-relation 24023. Up to 2304 conditions per place. [2022-11-18 21:03:08,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 769 places, 873 transitions, 1890 flow [2022-11-18 21:03:09,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 769 places, 873 transitions, 1890 flow [2022-11-18 21:03:09,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:03:09,886 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7491a152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:03:09,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2022-11-18 21:03:09,894 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2022-11-18 21:03:09,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:03:09,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:03:09,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:09,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2022-11-18 21:03:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1982865408, now seen corresponding path program 1 times [2022-11-18 21:03:09,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:09,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236167320] [2022-11-18 21:03:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:03:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236167320] [2022-11-18 21:03:09,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236167320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:09,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:09,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:03:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591239889] [2022-11-18 21:03:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:09,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:09,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:09,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:09,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 741 out of 873 [2022-11-18 21:03:10,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 873 transitions, 1890 flow. Second operand has 4 states, 4 states have (on average 742.75) internal successors, (2971), 4 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:10,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:10,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 741 of 873 [2022-11-18 21:03:10,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand