./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/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_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/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_385eeba0-a7f3-4882-b348-9bb2dc29f811/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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- 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 11:37:34,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:37:34,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:37:34,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:37:34,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:37:34,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:37:34,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:37:34,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:37:34,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:37:34,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:37:34,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:37:34,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:37:34,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:37:34,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:37:34,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:37:34,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:37:34,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:37:34,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:37:34,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:37:34,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:37:34,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:37:34,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:37:34,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:37:34,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:37:34,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:37:34,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:37:34,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:37:34,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:37:34,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:37:34,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:37:34,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:37:34,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:37:34,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:37:34,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:37:34,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:37:34,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:37:34,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:37:34,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:37:34,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:37:34,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:37:34,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:37:34,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:37:34,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:37:34,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:37:34,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:37:34,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:37:34,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:37:34,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:37:34,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:37:34,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:37:34,261 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:37:34,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:37:34,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:37:34,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:37:34,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:37:34,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:37:34,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:37:34,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:37:34,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:37:34,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:37:34,263 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:37:34,263 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:37:34,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:37:34,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:37:34,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:37:34,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:37:34,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:37:34,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:37:34,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:34,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:37:34,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:37:34,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:37:34,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:37:34,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:37:34,266 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:37:34,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:37:34,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:37:34,266 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_385eeba0-a7f3-4882-b348-9bb2dc29f811/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-11-16 11:37:34,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:37:34,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:37:34,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:37:34,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:37:34,528 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:37:34,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-16 11:37:34,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/data/84318b94a/daa6d1582a89431c92874beb960518c4/FLAGa2b2b5f59 [2022-11-16 11:37:35,111 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:37:35,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-16 11:37:35,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/data/84318b94a/daa6d1582a89431c92874beb960518c4/FLAGa2b2b5f59 [2022-11-16 11:37:35,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/data/84318b94a/daa6d1582a89431c92874beb960518c4 [2022-11-16 11:37:35,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:37:35,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:37:35,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:35,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:37:35,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:37:35,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:35" (1/1) ... [2022-11-16 11:37:35,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196bd0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:35, skipping insertion in model container [2022-11-16 11:37:35,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:35" (1/1) ... [2022-11-16 11:37:35,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:37:35,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:35,939 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_385eeba0-a7f3-4882-b348-9bb2dc29f811/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-16 11:37:35,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:35,990 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:37:36,036 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_385eeba0-a7f3-4882-b348-9bb2dc29f811/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-16 11:37:36,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:36,094 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:37:36,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36 WrapperNode [2022-11-16 11:37:36,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:36,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:36,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:37:36,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:37:36,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,152 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 234 [2022-11-16 11:37:36,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:36,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:37:36,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:37:36,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:37:36,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,181 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:37:36,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:37:36,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:37:36,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:37:36,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (1/1) ... [2022-11-16 11:37:36,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:36,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:36,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:37:36,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 11:37:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:37:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:37:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 11:37:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 11:37:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:37:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:37:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:37:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:37:36,275 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 11:37:36,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:37:36,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:37:36,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:37:36,857 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:37:36,857 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-16 11:37:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:36 BoogieIcfgContainer [2022-11-16 11:37:36,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:37:36,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:37:36,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:37:36,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:37:36,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:37:35" (1/3) ... [2022-11-16 11:37:36,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed064d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:36, skipping insertion in model container [2022-11-16 11:37:36,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:36" (2/3) ... [2022-11-16 11:37:36,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed064d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:36, skipping insertion in model container [2022-11-16 11:37:36,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:36" (3/3) ... [2022-11-16 11:37:36,879 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-11-16 11:37:36,898 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:37:36,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:37:36,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:37:36,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:37:37,042 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:37:37,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 257 transitions, 536 flow [2022-11-16 11:37:37,275 INFO L130 PetriNetUnfolder]: 58/455 cut-off events. [2022-11-16 11:37:37,276 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-16 11:37:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 455 events. 58/455 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2043 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2022-11-16 11:37:37,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 257 transitions, 536 flow [2022-11-16 11:37:37,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 257 transitions, 536 flow [2022-11-16 11:37:37,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:37:37,323 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3bbea828, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:37:37,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 11:37:37,336 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2022-11-16 11:37:37,336 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:37:37,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:37,337 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] [2022-11-16 11:37:37,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:37:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2064098867, now seen corresponding path program 1 times [2022-11-16 11:37:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810170257] [2022-11-16 11:37:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:37,908 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 11:37:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810170257] [2022-11-16 11:37:37,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810170257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:37,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:37,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343141713] [2022-11-16 11:37:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:37,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:37,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 257 [2022-11-16 11:37:37,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 257 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 11:37:37,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:37,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 257 [2022-11-16 11:37:37,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:38,156 INFO L130 PetriNetUnfolder]: 8/318 cut-off events. [2022-11-16 11:37:38,156 INFO L131 PetriNetUnfolder]: For 27/69 co-relation queries the response was YES. [2022-11-16 11:37:38,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 318 events. 8/318 cut-off events. For 27/69 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1070 event pairs, 0 based on Foata normal form. 120/399 useless extension candidates. Maximal degree in co-relation 219. Up to 15 conditions per place. [2022-11-16 11:37:38,163 INFO L137 encePairwiseOnDemand]: 224/257 looper letters, 14 selfloop transitions, 4 changer transitions 0/229 dead transitions. [2022-11-16 11:37:38,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 229 transitions, 516 flow [2022-11-16 11:37:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-11-16 11:37:38,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840466926070039 [2022-11-16 11:37:38,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-11-16 11:37:38,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-11-16 11:37:38,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:38,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-11-16 11:37:38,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 11:37:38,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 11:37:38,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 11:37:38,208 INFO L175 Difference]: Start difference. First operand has 230 places, 257 transitions, 536 flow. Second operand 5 states and 1136 transitions. [2022-11-16 11:37:38,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 229 transitions, 516 flow [2022-11-16 11:37:38,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:37:38,218 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 488 flow [2022-11-16 11:37:38,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-11-16 11:37:38,224 INFO L288 CegarLoopForPetriNet]: 230 programPoint places, 1 predicate places. [2022-11-16 11:37:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 488 flow [2022-11-16 11:37:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 11:37:38,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:38,226 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] [2022-11-16 11:37:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:37:38,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 11:37:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1251748110, now seen corresponding path program 1 times [2022-11-16 11:37:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:38,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015759643] [2022-11-16 11:37:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:37:38,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:37:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:37:38,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:37:38,303 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:37:38,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-16 11:37:38,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-16 11:37:38,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-16 11:37:38,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-16 11:37:38,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-16 11:37:38,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-16 11:37:38,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-16 11:37:38,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-16 11:37:38,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-16 11:37:38,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-16 11:37:38,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-16 11:37:38,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-16 11:37:38,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-16 11:37:38,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-16 11:37:38,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-16 11:37:38,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-16 11:37:38,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-16 11:37:38,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-16 11:37:38,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-16 11:37:38,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-16 11:37:38,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-16 11:37:38,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-16 11:37:38,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-16 11:37:38,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-16 11:37:38,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-16 11:37:38,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-16 11:37:38,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:37:38,321 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:37:38,324 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:37:38,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:37:38,453 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 11:37:38,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 405 transitions, 858 flow [2022-11-16 11:37:38,882 INFO L130 PetriNetUnfolder]: 197/1356 cut-off events. [2022-11-16 11:37:38,882 INFO L131 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2022-11-16 11:37:38,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1356 events. 197/1356 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8674 event pairs, 1 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 822. Up to 32 conditions per place. [2022-11-16 11:37:38,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 405 transitions, 858 flow [2022-11-16 11:37:38,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 405 transitions, 858 flow [2022-11-16 11:37:38,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:37:38,938 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;@3bbea828, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:37:38,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-16 11:37:38,952 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2022-11-16 11:37:38,952 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:37:38,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:38,953 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] [2022-11-16 11:37:38,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:37:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2051829086, now seen corresponding path program 1 times [2022-11-16 11:37:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:38,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931221374] [2022-11-16 11:37:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:39,077 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 11:37:39,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:39,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931221374] [2022-11-16 11:37:39,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931221374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:39,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:39,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:39,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333110571] [2022-11-16 11:37:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:39,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:39,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-16 11:37:39,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 405 transitions, 858 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 11:37:39,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:39,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-16 11:37:39,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:39,616 INFO L130 PetriNetUnfolder]: 60/1054 cut-off events. [2022-11-16 11:37:39,617 INFO L131 PetriNetUnfolder]: For 257/547 co-relation queries the response was YES. [2022-11-16 11:37:39,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1054 events. 60/1054 cut-off events. For 257/547 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6533 event pairs, 2 based on Foata normal form. 861/1759 useless extension candidates. Maximal degree in co-relation 751. Up to 85 conditions per place. [2022-11-16 11:37:39,653 INFO L137 encePairwiseOnDemand]: 350/405 looper letters, 27 selfloop transitions, 4 changer transitions 0/360 dead transitions. [2022-11-16 11:37:39,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 360 transitions, 830 flow [2022-11-16 11:37:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1761 transitions. [2022-11-16 11:37:39,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696296296296296 [2022-11-16 11:37:39,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1761 transitions. [2022-11-16 11:37:39,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1761 transitions. [2022-11-16 11:37:39,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:39,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1761 transitions. [2022-11-16 11:37:39,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states 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 11:37:39,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 11:37:39,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 11:37:39,674 INFO L175 Difference]: Start difference. First operand has 354 places, 405 transitions, 858 flow. Second operand 5 states and 1761 transitions. [2022-11-16 11:37:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 360 transitions, 830 flow [2022-11-16 11:37:39,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 360 transitions, 830 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:37:39,689 INFO L231 Difference]: Finished difference. Result has 357 places, 356 transitions, 786 flow [2022-11-16 11:37:39,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=357, PETRI_TRANSITIONS=356} [2022-11-16 11:37:39,692 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 3 predicate places. [2022-11-16 11:37:39,692 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 356 transitions, 786 flow [2022-11-16 11:37:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 11:37:39,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:39,694 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] [2022-11-16 11:37:39,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:37:39,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:37:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash -853852530, now seen corresponding path program 1 times [2022-11-16 11:37:39,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:39,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184923791] [2022-11-16 11:37:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:39,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:39,849 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 11:37:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184923791] [2022-11-16 11:37:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184923791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:39,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:39,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587296545] [2022-11-16 11:37:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:39,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-16 11:37:39,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 356 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 11:37:39,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:39,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-16 11:37:39,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:40,264 INFO L130 PetriNetUnfolder]: 60/1053 cut-off events. [2022-11-16 11:37:40,264 INFO L131 PetriNetUnfolder]: For 262/538 co-relation queries the response was YES. [2022-11-16 11:37:40,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 1053 events. 60/1053 cut-off events. For 262/538 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6573 event pairs, 2 based on Foata normal form. 13/914 useless extension candidates. Maximal degree in co-relation 1170. Up to 74 conditions per place. [2022-11-16 11:37:40,304 INFO L137 encePairwiseOnDemand]: 399/405 looper letters, 19 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-11-16 11:37:40,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 356 transitions, 838 flow [2022-11-16 11:37:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1670 transitions. [2022-11-16 11:37:40,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8246913580246914 [2022-11-16 11:37:40,311 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1670 transitions. [2022-11-16 11:37:40,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1670 transitions. [2022-11-16 11:37:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:40,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1670 transitions. [2022-11-16 11:37:40,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states 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 11:37:40,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 11:37:40,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 11:37:40,323 INFO L175 Difference]: Start difference. First operand has 357 places, 356 transitions, 786 flow. Second operand 5 states and 1670 transitions. [2022-11-16 11:37:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 356 transitions, 838 flow [2022-11-16 11:37:40,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 356 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:40,337 INFO L231 Difference]: Finished difference. Result has 360 places, 356 transitions, 804 flow [2022-11-16 11:37:40,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=360, PETRI_TRANSITIONS=356} [2022-11-16 11:37:40,340 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 6 predicate places. [2022-11-16 11:37:40,340 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 356 transitions, 804 flow [2022-11-16 11:37:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 11:37:40,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:40,342 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] [2022-11-16 11:37:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:37:40,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:37:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash -699623759, now seen corresponding path program 1 times [2022-11-16 11:37:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:40,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379862934] [2022-11-16 11:37:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:40,507 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 11:37:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:40,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379862934] [2022-11-16 11:37:40,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379862934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:40,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487424792] [2022-11-16 11:37:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:40,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:40,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:40,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:37:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:40,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:40,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:40,737 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 11:37:40,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:40,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487424792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:40,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:40,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968178178] [2022-11-16 11:37:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:40,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:40,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-16 11:37:40,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 356 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 11:37:40,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:40,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-16 11:37:40,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:41,159 INFO L130 PetriNetUnfolder]: 60/1052 cut-off events. [2022-11-16 11:37:41,159 INFO L131 PetriNetUnfolder]: For 268/530 co-relation queries the response was YES. [2022-11-16 11:37:41,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1052 events. 60/1052 cut-off events. For 268/530 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6502 event pairs, 2 based on Foata normal form. 11/911 useless extension candidates. Maximal degree in co-relation 767. Up to 77 conditions per place. [2022-11-16 11:37:41,186 INFO L137 encePairwiseOnDemand]: 400/405 looper letters, 23 selfloop transitions, 6 changer transitions 0/358 dead transitions. [2022-11-16 11:37:41,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 358 transitions, 864 flow [2022-11-16 11:37:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2333 transitions. [2022-11-16 11:37:41,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229276895943562 [2022-11-16 11:37:41,192 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2333 transitions. [2022-11-16 11:37:41,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2333 transitions. [2022-11-16 11:37:41,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:41,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2333 transitions. [2022-11-16 11:37:41,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 333.2857142857143) internal successors, (2333), 7 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states 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 11:37:41,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 11:37:41,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 11:37:41,207 INFO L175 Difference]: Start difference. First operand has 360 places, 356 transitions, 804 flow. Second operand 7 states and 2333 transitions. [2022-11-16 11:37:41,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 358 transitions, 864 flow [2022-11-16 11:37:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 358 transitions, 852 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:41,215 INFO L231 Difference]: Finished difference. Result has 362 places, 355 transitions, 800 flow [2022-11-16 11:37:41,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=362, PETRI_TRANSITIONS=355} [2022-11-16 11:37:41,217 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 8 predicate places. [2022-11-16 11:37:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 355 transitions, 800 flow [2022-11-16 11:37:41,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 11:37:41,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:41,218 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] [2022-11-16 11:37:41,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:41,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_385eeba0-a7f3-4882-b348-9bb2dc29f811/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:41,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-16 11:37:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1476147256, now seen corresponding path program 1 times [2022-11-16 11:37:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:41,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442727916] [2022-11-16 11:37:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:41,893 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 11:37:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442727916] [2022-11-16 11:37:41,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442727916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:41,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:37:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267331170] [2022-11-16 11:37:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:41,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:37:41,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:37:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:37:41,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 405 [2022-11-16 11:37:41,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 355 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 275.45454545454544) internal successors, (3030), 11 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states 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 11:37:41,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:41,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 405 [2022-11-16 11:37:41,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand