./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8 --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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --- 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-e04fb08 [2022-11-16 12:00:36,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:00:36,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:00:36,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:00:36,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:00:36,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:00:36,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:00:36,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:00:36,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:00:36,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:00:36,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:00:36,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:00:36,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:00:36,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:00:36,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:00:36,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:00:36,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:00:36,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:00:36,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:00:36,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:00:36,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:00:36,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:00:36,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:00:36,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:00:36,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:00:36,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:00:36,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:00:36,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:00:36,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:00:36,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:00:36,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:00:36,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:00:36,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:00:36,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:00:36,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:00:36,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:00:36,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:00:36,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:00:36,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:00:36,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:00:36,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:00:36,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:00:36,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:00:36,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:00:36,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:00:36,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:00:36,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:00:36,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:00:36,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:00:36,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:00:36,400 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:00:36,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:00:36,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:00:36,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:00:36,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:00:36,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:00:36,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:00:36,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:00:36,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:00:36,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:00:36,404 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:00:36,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:00:36,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:00:36,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:00:36,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:00:36,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:00:36,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:00:36,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:00:36,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:36,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:00:36,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:00:36,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:00:36,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:00:36,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:00:36,409 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:00:36,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:00:36,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:00:36,410 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_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c [2022-11-16 12:00:36,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:00:36,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:00:36,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:00:36,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:00:36,860 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:00:36,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2022-11-16 12:00:36,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/data/4b54427f3/3f3636c888f64f3da836919c6c2a36fc/FLAG714429a0a [2022-11-16 12:00:37,709 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:37,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2022-11-16 12:00:37,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/data/4b54427f3/3f3636c888f64f3da836919c6c2a36fc/FLAG714429a0a [2022-11-16 12:00:37,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/data/4b54427f3/3f3636c888f64f3da836919c6c2a36fc [2022-11-16 12:00:37,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:37,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:37,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:37,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:37,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:37,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:37" (1/1) ... [2022-11-16 12:00:37,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d79a5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:37, skipping insertion in model container [2022-11-16 12:00:37,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:37" (1/1) ... [2022-11-16 12:00:37,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:38,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:38,728 WARN L229 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_190d4b4a-2431-4f51-bad9-c8849f8f1c27/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2022-11-16 12:00:38,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:38,816 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:38,876 WARN L229 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_190d4b4a-2431-4f51-bad9-c8849f8f1c27/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2022-11-16 12:00:38,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:38,996 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:38,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38 WrapperNode [2022-11-16 12:00:38,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:38,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:38,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:38,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:39,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,088 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 398 [2022-11-16 12:00:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:39,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:39,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:39,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:39,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:39,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:39,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:39,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:39,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (1/1) ... [2022-11-16 12:00:39,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:39,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:39,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:39,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:00:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 12:00:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 12:00:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:00:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 12:00:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 12:00:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:00:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:00:39,234 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-16 12:00:39,234 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-16 12:00:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:39,237 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:00:39,437 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:39,439 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:40,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:40,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:40,233 INFO L300 CfgBuilder]: Removed 29 assume(true) statements. [2022-11-16 12:00:40,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:40 BoogieIcfgContainer [2022-11-16 12:00:40,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:40,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:40,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:40,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:40,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:37" (1/3) ... [2022-11-16 12:00:40,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe2b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:40, skipping insertion in model container [2022-11-16 12:00:40,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:38" (2/3) ... [2022-11-16 12:00:40,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe2b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:40, skipping insertion in model container [2022-11-16 12:00:40,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:40" (3/3) ... [2022-11-16 12:00:40,253 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2022-11-16 12:00:40,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:00:40,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:40,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-16 12:00:40,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:00:40,419 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-16 12:00:40,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 406 places, 447 transitions, 936 flow [2022-11-16 12:00:41,324 INFO L130 PetriNetUnfolder]: 188/1621 cut-off events. [2022-11-16 12:00:41,325 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-16 12:00:41,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 1621 events. 188/1621 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10735 event pairs, 0 based on Foata normal form. 0/1351 useless extension candidates. Maximal degree in co-relation 825. Up to 16 conditions per place. [2022-11-16 12:00:41,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 406 places, 447 transitions, 936 flow [2022-11-16 12:00:41,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 406 places, 447 transitions, 936 flow [2022-11-16 12:00:41,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:41,416 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;@599d0fce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:41,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 12:00:41,437 INFO L130 PetriNetUnfolder]: 3/93 cut-off events. [2022-11-16 12:00:41,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:41,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:41,439 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] [2022-11-16 12:00:41,440 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)] === [2022-11-16 12:00:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 525851617, now seen corresponding path program 1 times [2022-11-16 12:00:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:41,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672816007] [2022-11-16 12:00:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:42,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:42,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672816007] [2022-11-16 12:00:42,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672816007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:42,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:42,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069795005] [2022-11-16 12:00:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:42,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:42,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 447 [2022-11-16 12:00:42,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 447 transitions, 936 flow. Second operand has 4 states, 4 states have (on average 391.75) internal successors, (1567), 4 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:42,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 447 [2022-11-16 12:00:42,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:42,847 INFO L130 PetriNetUnfolder]: 49/989 cut-off events. [2022-11-16 12:00:42,848 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-11-16 12:00:42,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 989 events. 49/989 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5525 event pairs, 0 based on Foata normal form. 287/1165 useless extension candidates. Maximal degree in co-relation 759. Up to 45 conditions per place. [2022-11-16 12:00:42,872 INFO L137 encePairwiseOnDemand]: 409/447 looper letters, 20 selfloop transitions, 4 changer transitions 0/414 dead transitions. [2022-11-16 12:00:42,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 414 transitions, 918 flow [2022-11-16 12:00:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:00:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:00:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2009 transitions. [2022-11-16 12:00:42,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8988814317673378 [2022-11-16 12:00:42,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2009 transitions. [2022-11-16 12:00:42,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2009 transitions. [2022-11-16 12:00:42,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:42,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2009 transitions. [2022-11-16 12:00:42,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 401.8) internal successors, (2009), 5 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 447.0) internal successors, (2682), 6 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,943 INFO L175 Difference]: Start difference. First operand has 406 places, 447 transitions, 936 flow. Second operand 5 states and 2009 transitions. [2022-11-16 12:00:42,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 414 transitions, 918 flow [2022-11-16 12:00:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 414 transitions, 918 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:42,970 INFO L231 Difference]: Finished difference. Result has 407 places, 412 transitions, 878 flow [2022-11-16 12:00:42,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=878, PETRI_PLACES=407, PETRI_TRANSITIONS=412} [2022-11-16 12:00:42,981 INFO L288 CegarLoopForPetriNet]: 406 programPoint places, 1 predicate places. [2022-11-16 12:00:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 412 transitions, 878 flow [2022-11-16 12:00:42,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 391.75) internal successors, (1567), 4 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:42,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:42,984 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] [2022-11-16 12:00:42,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:42,985 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)] === [2022-11-16 12:00:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1629443222, now seen corresponding path program 1 times [2022-11-16 12:00:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379601751] [2022-11-16 12:00:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:00:43,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:00:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:00:43,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:00:43,137 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:00:43,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-16 12:00:43,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-11-16 12:00:43,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-11-16 12:00:43,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-11-16 12:00:43,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-11-16 12:00:43,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-11-16 12:00:43,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-11-16 12:00:43,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-11-16 12:00:43,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-11-16 12:00:43,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-11-16 12:00:43,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-11-16 12:00:43,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-11-16 12:00:43,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-11-16 12:00:43,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-11-16 12:00:43,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-11-16 12:00:43,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-11-16 12:00:43,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-11-16 12:00:43,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-11-16 12:00:43,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-11-16 12:00:43,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-11-16 12:00:43,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-11-16 12:00:43,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 31 remaining) [2022-11-16 12:00:43,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 31 remaining) [2022-11-16 12:00:43,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-11-16 12:00:43,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-11-16 12:00:43,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-11-16 12:00:43,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-11-16 12:00:43,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-11-16 12:00:43,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-11-16 12:00:43,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-11-16 12:00:43,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-11-16 12:00:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:00:43,170 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 12:00:43,174 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:00:43,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:00:43,379 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-16 12:00:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 609 places, 683 transitions, 1456 flow [2022-11-16 12:00:48,059 INFO L130 PetriNetUnfolder]: 1211/7876 cut-off events. [2022-11-16 12:00:48,059 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2022-11-16 12:00:48,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8550 conditions, 7876 events. 1211/7876 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 74370 event pairs, 22 based on Foata normal form. 0/6447 useless extension candidates. Maximal degree in co-relation 4892. Up to 192 conditions per place. [2022-11-16 12:00:48,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 609 places, 683 transitions, 1456 flow [2022-11-16 12:00:48,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 609 places, 683 transitions, 1456 flow [2022-11-16 12:00:48,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:48,537 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;@599d0fce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:48,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 12:00:48,548 INFO L130 PetriNetUnfolder]: 3/93 cut-off events. [2022-11-16 12:00:48,548 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:48,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:48,549 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] [2022-11-16 12:00:48,549 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)] === [2022-11-16 12:00:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:48,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1282357018, now seen corresponding path program 1 times [2022-11-16 12:00:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:48,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74942311] [2022-11-16 12:00:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:48,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:48,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74942311] [2022-11-16 12:00:48,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74942311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:48,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:48,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130819207] [2022-11-16 12:00:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:48,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:48,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 683 [2022-11-16 12:00:48,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 683 transitions, 1456 flow. Second operand has 4 states, 4 states have (on average 589.75) internal successors, (2359), 4 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:48,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:48,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 683 [2022-11-16 12:00:48,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:52,962 INFO L130 PetriNetUnfolder]: 614/6065 cut-off events. [2022-11-16 12:00:52,962 INFO L131 PetriNetUnfolder]: For 1770/1770 co-relation queries the response was YES. [2022-11-16 12:00:53,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 6065 events. 614/6065 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 56726 event pairs, 18 based on Foata normal form. 4930/10201 useless extension candidates. Maximal degree in co-relation 4766. Up to 609 conditions per place. [2022-11-16 12:00:53,242 INFO L137 encePairwiseOnDemand]: 621/683 looper letters, 39 selfloop transitions, 4 changer transitions 0/631 dead transitions. [2022-11-16 12:00:53,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 631 transitions, 1438 flow [2022-11-16 12:00:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:00:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:00:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3042 transitions. [2022-11-16 12:00:53,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8907759882869692 [2022-11-16 12:00:53,251 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3042 transitions. [2022-11-16 12:00:53,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3042 transitions. [2022-11-16 12:00:53,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:53,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3042 transitions. [2022-11-16 12:00:53,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 608.4) internal successors, (3042), 5 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,275 INFO L175 Difference]: Start difference. First operand has 609 places, 683 transitions, 1456 flow. Second operand 5 states and 3042 transitions. [2022-11-16 12:00:53,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 631 transitions, 1438 flow [2022-11-16 12:00:53,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 631 transitions, 1438 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:53,296 INFO L231 Difference]: Finished difference. Result has 612 places, 627 transitions, 1370 flow [2022-11-16 12:00:53,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1370, PETRI_PLACES=612, PETRI_TRANSITIONS=627} [2022-11-16 12:00:53,299 INFO L288 CegarLoopForPetriNet]: 609 programPoint places, 3 predicate places. [2022-11-16 12:00:53,299 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 627 transitions, 1370 flow [2022-11-16 12:00:53,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 589.75) internal successors, (2359), 4 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:53,302 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] [2022-11-16 12:00:53,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:00:53,303 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)] === [2022-11-16 12:00:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:53,303 INFO L85 PathProgramCache]: Analyzing trace with hash 534216841, now seen corresponding path program 1 times [2022-11-16 12:00:53,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:53,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837127666] [2022-11-16 12:00:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:53,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:00:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837127666] [2022-11-16 12:00:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837127666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:53,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:53,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034151347] [2022-11-16 12:00:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:53,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 683 [2022-11-16 12:00:53,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 627 transitions, 1370 flow. Second operand has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:53,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:53,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 683 [2022-11-16 12:00:53,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:56,948 INFO L130 PetriNetUnfolder]: 614/6064 cut-off events. [2022-11-16 12:00:56,948 INFO L131 PetriNetUnfolder]: For 1778/1778 co-relation queries the response was YES. [2022-11-16 12:00:57,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 6064 events. 614/6064 cut-off events. For 1778/1778 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 56697 event pairs, 18 based on Foata normal form. 1/5275 useless extension candidates. Maximal degree in co-relation 7236. Up to 598 conditions per place. [2022-11-16 12:00:57,187 INFO L137 encePairwiseOnDemand]: 677/683 looper letters, 31 selfloop transitions, 8 changer transitions 0/627 dead transitions. [2022-11-16 12:00:57,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 627 transitions, 1446 flow [2022-11-16 12:00:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:00:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:00:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2977 transitions. [2022-11-16 12:00:57,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717423133235724 [2022-11-16 12:00:57,198 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2977 transitions. [2022-11-16 12:00:57,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2977 transitions. [2022-11-16 12:00:57,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:57,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2977 transitions. [2022-11-16 12:00:57,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 595.4) internal successors, (2977), 5 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,220 INFO L175 Difference]: Start difference. First operand has 612 places, 627 transitions, 1370 flow. Second operand 5 states and 2977 transitions. [2022-11-16 12:00:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 627 transitions, 1446 flow [2022-11-16 12:00:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 627 transitions, 1444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:57,239 INFO L231 Difference]: Finished difference. Result has 615 places, 627 transitions, 1388 flow [2022-11-16 12:00:57,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1388, PETRI_PLACES=615, PETRI_TRANSITIONS=627} [2022-11-16 12:00:57,244 INFO L288 CegarLoopForPetriNet]: 609 programPoint places, 6 predicate places. [2022-11-16 12:00:57,244 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 627 transitions, 1388 flow [2022-11-16 12:00:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:57,247 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] [2022-11-16 12:00:57,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:00:57,247 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)] === [2022-11-16 12:00:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash -619145489, now seen corresponding path program 1 times [2022-11-16 12:00:57,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:57,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078583595] [2022-11-16 12:00:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078583595] [2022-11-16 12:00:57,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078583595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:00:57,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757486118] [2022-11-16 12:00:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:57,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:57,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:00:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:57,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:00:57,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:57,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:57,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757486118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:57,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:00:57,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:00:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711079144] [2022-11-16 12:00:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:57,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 683 [2022-11-16 12:00:57,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 627 transitions, 1388 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:57,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:57,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 683 [2022-11-16 12:00:57,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:01,112 INFO L130 PetriNetUnfolder]: 614/6063 cut-off events. [2022-11-16 12:01:01,112 INFO L131 PetriNetUnfolder]: For 1787/1787 co-relation queries the response was YES. [2022-11-16 12:01:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7352 conditions, 6063 events. 614/6063 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 56702 event pairs, 18 based on Foata normal form. 1/5274 useless extension candidates. Maximal degree in co-relation 4782. Up to 601 conditions per place. [2022-11-16 12:01:01,323 INFO L137 encePairwiseOnDemand]: 678/683 looper letters, 35 selfloop transitions, 6 changer transitions 0/629 dead transitions. [2022-11-16 12:01:01,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 629 transitions, 1472 flow [2022-11-16 12:01:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:01:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:01:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4158 transitions. [2022-11-16 12:01:01,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696925329428989 [2022-11-16 12:01:01,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4158 transitions. [2022-11-16 12:01:01,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4158 transitions. [2022-11-16 12:01:01,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:01,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4158 transitions. [2022-11-16 12:01:01,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:01,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:01,361 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:01,362 INFO L175 Difference]: Start difference. First operand has 615 places, 627 transitions, 1388 flow. Second operand 7 states and 4158 transitions. [2022-11-16 12:01:01,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 629 transitions, 1472 flow [2022-11-16 12:01:01,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 629 transitions, 1460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:01:01,375 INFO L231 Difference]: Finished difference. Result has 617 places, 626 transitions, 1384 flow [2022-11-16 12:01:01,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1384, PETRI_PLACES=617, PETRI_TRANSITIONS=626} [2022-11-16 12:01:01,377 INFO L288 CegarLoopForPetriNet]: 609 programPoint places, 8 predicate places. [2022-11-16 12:01:01,378 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 626 transitions, 1384 flow [2022-11-16 12:01:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:01,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:01,380 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] [2022-11-16 12:01:01,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:01,593 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)] === [2022-11-16 12:01:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1022589359, now seen corresponding path program 1 times [2022-11-16 12:01:01,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:01,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830011366] [2022-11-16 12:01:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:01,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:01,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830011366] [2022-11-16 12:01:01,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830011366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:01,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137083184] [2022-11-16 12:01:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:01,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:01,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:01:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:02,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:01:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:02,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:02,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137083184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:02,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:02,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:01:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210149143] [2022-11-16 12:01:02,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:02,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:01:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:01:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:01:02,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 683 [2022-11-16 12:01:02,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 626 transitions, 1384 flow. Second operand has 10 states, 10 states have (on average 591.0) internal successors, (5910), 10 states have internal predecessors, (5910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:02,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:02,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 683 [2022-11-16 12:01:02,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:02,251 INFO L130 PetriNetUnfolder]: 0/153 cut-off events. [2022-11-16 12:01:02,251 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-16 12:01:02,252 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. [2022-11-16 12:01:02,252 INFO L137 encePairwiseOnDemand]: 678/683 looper letters, 13 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2022-11-16 12:01:02,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 147 transitions, 388 flow [2022-11-16 12:01:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:01:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:01:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5314 transitions. [2022-11-16 12:01:02,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644867414999187 [2022-11-16 12:01:02,266 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5314 transitions. [2022-11-16 12:01:02,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5314 transitions. [2022-11-16 12:01:02,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:02,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5314 transitions. [2022-11-16 12:01:02,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 590.4444444444445) internal successors, (5314), 9 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:02,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 683.0) internal successors, (6830), 10 states have internal predecessors, (6830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:02,296 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 683.0) internal successors, (6830), 10 states have internal predecessors, (6830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:02,297 INFO L175 Difference]: Start difference. First operand has 617 places, 626 transitions, 1384 flow. Second operand 9 states and 5314 transitions. [2022-11-16 12:01:02,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 147 transitions, 388 flow [2022-11-16 12:01:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 147 transitions, 371 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-16 12:01:02,301 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 333 flow [2022-11-16 12:01:02,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, 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} [2022-11-16 12:01:02,303 INFO L288 CegarLoopForPetriNet]: 609 programPoint places, -446 predicate places. [2022-11-16 12:01:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 333 flow [2022-11-16 12:01:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 591.0) internal successors, (5910), 10 states have internal predecessors, (5910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:02,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:02,306 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] [2022-11-16 12:01:02,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_190d4b4a-2431-4f51-bad9-c8849f8f1c27/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:02,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:01:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash 427723634, now seen corresponding path program 1 times [2022-11-16 12:01:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:02,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185208305] [2022-11-16 12:01:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:02,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:02,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:02,657 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:01:02,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2022-11-16 12:01:02,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-16 12:01:02,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-16 12:01:02,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-16 12:01:02,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-16 12:01:02,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-16 12:01:02,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-16 12:01:02,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-16 12:01:02,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-16 12:01:02,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-16 12:01:02,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-16 12:01:02,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-16 12:01:02,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-16 12:01:02,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2022-11-16 12:01:02,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-16 12:01:02,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-16 12:01:02,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-16 12:01:02,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-16 12:01:02,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-16 12:01:02,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-16 12:01:02,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-16 12:01:02,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-16 12:01:02,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-16 12:01:02,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-16 12:01:02,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:01:02,667 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:01:02,668 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:01:02,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:01:02,832 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2022-11-16 12:01:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 919 transitions, 1982 flow [2022-11-16 12:01:35,057 INFO L130 PetriNetUnfolder]: 9176/41641 cut-off events. [2022-11-16 12:01:35,058 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2022-11-16 12:01:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48815 conditions, 41641 events. 9176/41641 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 491922 event pairs, 512 based on Foata normal form. 0/33877 useless extension candidates. Maximal degree in co-relation 26231. Up to 2304 conditions per place. [2022-11-16 12:01:38,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 919 transitions, 1982 flow [2022-11-16 12:01:40,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 919 transitions, 1982 flow [2022-11-16 12:01:40,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:01:40,306 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;@599d0fce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:01:40,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2022-11-16 12:01:40,316 INFO L130 PetriNetUnfolder]: 3/98 cut-off events. [2022-11-16 12:01:40,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:01:40,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:40,317 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] [2022-11-16 12:01:40,317 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)] === [2022-11-16 12:01:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1318809385, now seen corresponding path program 1 times [2022-11-16 12:01:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:40,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717414334] [2022-11-16 12:01:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:40,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:40,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717414334] [2022-11-16 12:01:40,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717414334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:40,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:40,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:01:40,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487023719] [2022-11-16 12:01:40,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:01:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:01:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:01:40,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 786 out of 919 [2022-11-16 12:01:40,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 919 transitions, 1982 flow. Second operand has 4 states, 4 states have (on average 787.75) internal successors, (3151), 4 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:40,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:40,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 786 of 919 [2022-11-16 12:01:40,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand