./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:48:03,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:48:03,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:48:03,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:48:03,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:48:03,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:48:03,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:48:03,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:48:03,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:48:03,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:48:03,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:48:03,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:48:03,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:48:03,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:48:03,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:48:03,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:48:03,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:48:03,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:48:03,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:48:03,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:48:03,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:48:03,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:48:03,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:48:03,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:48:03,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:48:03,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:48:03,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:48:03,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:48:03,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:48:03,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:48:03,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:48:03,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:48:03,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:48:03,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:48:03,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:48:03,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:48:03,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:48:03,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:48:03,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:48:03,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:48:03,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:48:03,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:48:03,947 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:48:03,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:48:03,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:48:03,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:48:03,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:48:03,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:48:03,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:48:03,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:48:03,951 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:48:03,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:48:03,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:48:03,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:48:03,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:48:03,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:48:03,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:48:03,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:48:03,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:48:03,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:48:03,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:48:03,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:48:03,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:48:03,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:03,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:48:03,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:48:03,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:48:03,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:48:03,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:48:03,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:48:03,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:48:03,957 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:48:03,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:48:03,957 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:48:03,957 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:48:04,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:48:04,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:48:04,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:48:04,264 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:48:04,268 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:48:04,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-09-01 07:48:05,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:48:05,679 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:48:05,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-09-01 07:48:05,687 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8066836ac/b2e0c82c07c648b9a1ace4d012d7fa97/FLAG335471e81 [2023-09-01 07:48:05,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8066836ac/b2e0c82c07c648b9a1ace4d012d7fa97 [2023-09-01 07:48:05,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:48:05,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:48:05,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:05,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:48:05,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:48:05,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:05" (1/1) ... [2023-09-01 07:48:05,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f32814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:05, skipping insertion in model container [2023-09-01 07:48:05,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:05" (1/1) ... [2023-09-01 07:48:05,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:48:05,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:48:05,948 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-09-01 07:48:05,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:05,970 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:48:06,007 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-09-01 07:48:06,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:06,028 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:06,029 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:06,036 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:48:06,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06 WrapperNode [2023-09-01 07:48:06,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:06,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:06,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:48:06,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:48:06,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,091 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 131 [2023-09-01 07:48:06,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:06,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:48:06,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:48:06,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:48:06,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:48:06,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:48:06,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:48:06,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:48:06,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (1/1) ... [2023-09-01 07:48:06,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:06,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:06,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:48:06,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:48:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:48:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:48:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:48:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:48:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:48:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:48:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:48:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:48:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:48:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:48:06,236 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:48:06,364 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:48:06,366 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:48:06,700 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:48:06,798 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:48:06,799 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 07:48:06,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:06 BoogieIcfgContainer [2023-09-01 07:48:06,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:48:06,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:48:06,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:48:06,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:48:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:48:05" (1/3) ... [2023-09-01 07:48:06,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7d0b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:06, skipping insertion in model container [2023-09-01 07:48:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:06" (2/3) ... [2023-09-01 07:48:06,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7d0b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:06, skipping insertion in model container [2023-09-01 07:48:06,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:06" (3/3) ... [2023-09-01 07:48:06,820 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-09-01 07:48:06,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:48:06,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:48:06,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 07:48:06,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:48:06,970 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:48:07,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-09-01 07:48:07,123 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-09-01 07:48:07,123 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:48:07,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-09-01 07:48:07,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-09-01 07:48:07,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 322 flow [2023-09-01 07:48:07,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:48:07,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 322 flow [2023-09-01 07:48:07,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 322 flow [2023-09-01 07:48:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 322 flow [2023-09-01 07:48:07,206 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-09-01 07:48:07,207 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:48:07,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 155 events. 11/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-09-01 07:48:07,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 1604 [2023-09-01 07:48:13,480 INFO L134 LiptonReduction]: Checked pairs total: 2248 [2023-09-01 07:48:13,481 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-09-01 07:48:13,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:48:13,498 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;@5a1fb90a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:48:13,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-09-01 07:48:13,501 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:48:13,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:48:13,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:13,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:48:13,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:13,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 22144, now seen corresponding path program 1 times [2023-09-01 07:48:13,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156929017] [2023-09-01 07:48:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156929017] [2023-09-01 07:48:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156929017] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:48:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008930605] [2023-09-01 07:48:13,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:13,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:13,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-09-01 07:48:13,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2023-09-01 07:48:13,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:13,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-09-01 07:48:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:14,122 INFO L130 PetriNetUnfolder]: 963/1473 cut-off events. [2023-09-01 07:48:14,123 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 07:48:14,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 1473 events. 963/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6126 event pairs, 806 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1428. Up to 739 conditions per place. [2023-09-01 07:48:14,137 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-09-01 07:48:14,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 220 flow [2023-09-01 07:48:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-09-01 07:48:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102639296187683 [2023-09-01 07:48:14,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-09-01 07:48:14,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-09-01 07:48:14,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:14,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-09-01 07:48:14,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2023-09-01 07:48:14,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:14,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:14,215 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 64 flow. Second operand 3 states and 522 transitions. [2023-09-01 07:48:14,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 220 flow [2023-09-01 07:48:14,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:48:14,222 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 72 flow [2023-09-01 07:48:14,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-09-01 07:48:14,230 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-09-01 07:48:14,233 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 72 flow [2023-09-01 07:48:14,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2023-09-01 07:48:14,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:14,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:48:14,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:48:14,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:14,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 687373, now seen corresponding path program 1 times [2023-09-01 07:48:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:14,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092234182] [2023-09-01 07:48:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:14,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092234182] [2023-09-01 07:48:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092234182] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238275365] [2023-09-01 07:48:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:14,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:14,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:48:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:14,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:48:14,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:14,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:48:14,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238275365] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:14,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:48:14,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 07:48:14,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028278608] [2023-09-01 07:48:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:14,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:48:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:48:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:48:14,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-09-01 07:48:14,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-09-01 07:48:14,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:14,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-09-01 07:48:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:14,700 INFO L130 PetriNetUnfolder]: 963/1472 cut-off events. [2023-09-01 07:48:14,700 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 07:48:14,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1472 events. 963/1472 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6123 event pairs, 806 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 1559. Up to 737 conditions per place. [2023-09-01 07:48:14,708 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-09-01 07:48:14,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 214 flow [2023-09-01 07:48:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:48:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:48:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 677 transitions. [2023-09-01 07:48:14,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963343108504399 [2023-09-01 07:48:14,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 677 transitions. [2023-09-01 07:48:14,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 677 transitions. [2023-09-01 07:48:14,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:14,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 677 transitions. [2023-09-01 07:48:14,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 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) [2023-09-01 07:48:14,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-09-01 07:48:14,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-09-01 07:48:14,717 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 4 states and 677 transitions. [2023-09-01 07:48:14,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 214 flow [2023-09-01 07:48:14,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:14,719 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 70 flow [2023-09-01 07:48:14,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-09-01 07:48:14,720 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-09-01 07:48:14,720 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 70 flow [2023-09-01 07:48:14,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-09-01 07:48:14,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:14,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:48:14,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:14,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:14,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 687383, now seen corresponding path program 1 times [2023-09-01 07:48:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:14,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777876735] [2023-09-01 07:48:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:14,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777876735] [2023-09-01 07:48:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777876735] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600491040] [2023-09-01 07:48:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:14,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:14,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:14,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:15,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:48:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:15,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:48:15,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:15,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600491040] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:15,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:48:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726221545] [2023-09-01 07:48:15,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:15,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:48:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:48:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:48:15,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-09-01 07:48:15,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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) [2023-09-01 07:48:15,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:15,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-09-01 07:48:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:15,535 INFO L130 PetriNetUnfolder]: 2406/3677 cut-off events. [2023-09-01 07:48:15,535 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 07:48:15,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7792 conditions, 3677 events. 2406/3677 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17947 event pairs, 2015 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6227. Up to 738 conditions per place. [2023-09-01 07:48:15,579 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 112 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-09-01 07:48:15,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 117 transitions, 516 flow [2023-09-01 07:48:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:48:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:48:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2023-09-01 07:48:15,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190615835777126 [2023-09-01 07:48:15,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2023-09-01 07:48:15,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2023-09-01 07:48:15,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:15,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2023-09-01 07:48:15,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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) [2023-09-01 07:48:15,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2023-09-01 07:48:15,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2023-09-01 07:48:15,590 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 70 flow. Second operand 6 states and 1062 transitions. [2023-09-01 07:48:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 117 transitions, 516 flow [2023-09-01 07:48:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 117 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:48:15,593 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 103 flow [2023-09-01 07:48:15,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-09-01 07:48:15,593 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-09-01 07:48:15,594 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 103 flow [2023-09-01 07:48:15,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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) [2023-09-01 07:48:15,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:15,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:48:15,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:15,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 07:48:15,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:15,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -980524645, now seen corresponding path program 1 times [2023-09-01 07:48:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:15,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669960890] [2023-09-01 07:48:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669960890] [2023-09-01 07:48:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669960890] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:48:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170127509] [2023-09-01 07:48:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:15,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:15,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:15,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-09-01 07:48:15,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:15,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:15,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:16,330 INFO L130 PetriNetUnfolder]: 3326/5097 cut-off events. [2023-09-01 07:48:16,332 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 07:48:16,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 5097 events. 3326/5097 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27745 event pairs, 2015 based on Foata normal form. 0/3497 useless extension candidates. Maximal degree in co-relation 8621. Up to 3678 conditions per place. [2023-09-01 07:48:16,360 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-09-01 07:48:16,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 230 flow [2023-09-01 07:48:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-09-01 07:48:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2023-09-01 07:48:16,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-09-01 07:48:16,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-09-01 07:48:16,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:16,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-09-01 07:48:16,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:16,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:16,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:16,368 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 103 flow. Second operand 3 states and 517 transitions. [2023-09-01 07:48:16,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 230 flow [2023-09-01 07:48:16,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 222 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:16,371 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 109 flow [2023-09-01 07:48:16,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-09-01 07:48:16,373 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-09-01 07:48:16,373 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 109 flow [2023-09-01 07:48:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-09-01 07:48:16,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:16,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:48:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:48:16,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:16,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash -996404790, now seen corresponding path program 2 times [2023-09-01 07:48:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:16,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000164219] [2023-09-01 07:48:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000164219] [2023-09-01 07:48:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000164219] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421455691] [2023-09-01 07:48:16,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:48:16,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:16,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:16,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:48:16,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:48:16,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:48:16,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:48:16,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:48:16,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:48:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421455691] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:48:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:48:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209108383] [2023-09-01 07:48:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:48:16,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:16,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-09-01 07:48:16,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:16,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:16,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:16,999 INFO L130 PetriNetUnfolder]: 3326/5096 cut-off events. [2023-09-01 07:48:16,999 INFO L131 PetriNetUnfolder]: For 1008/1008 co-relation queries the response was YES. [2023-09-01 07:48:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11918 conditions, 5096 events. 3326/5096 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26944 event pairs, 2855 based on Foata normal form. 1/3877 useless extension candidates. Maximal degree in co-relation 9524. Up to 5096 conditions per place. [2023-09-01 07:48:17,032 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 07:48:17,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 157 flow [2023-09-01 07:48:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-09-01 07:48:17,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48778103616813295 [2023-09-01 07:48:17,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-09-01 07:48:17,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-09-01 07:48:17,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:17,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-09-01 07:48:17,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-09-01 07:48:17,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:17,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:17,038 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 109 flow. Second operand 3 states and 499 transitions. [2023-09-01 07:48:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 157 flow [2023-09-01 07:48:17,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 145 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 07:48:17,041 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 89 flow [2023-09-01 07:48:17,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-09-01 07:48:17,042 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-09-01 07:48:17,042 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 89 flow [2023-09-01 07:48:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-09-01 07:48:17,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:17,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:17,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:17,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:17,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:17,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -331492260, now seen corresponding path program 1 times [2023-09-01 07:48:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:17,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466366914] [2023-09-01 07:48:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466366914] [2023-09-01 07:48:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466366914] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:17,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:48:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562476260] [2023-09-01 07:48:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:17,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:17,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:17,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:17,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-09-01 07:48:17,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:17,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:17,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:17,783 INFO L130 PetriNetUnfolder]: 2956/4536 cut-off events. [2023-09-01 07:48:17,783 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-09-01 07:48:17,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10340 conditions, 4536 events. 2956/4536 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25345 event pairs, 495 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10331. Up to 3590 conditions per place. [2023-09-01 07:48:17,813 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-09-01 07:48:17,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 193 flow [2023-09-01 07:48:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-09-01 07:48:17,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49853372434017595 [2023-09-01 07:48:17,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-09-01 07:48:17,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-09-01 07:48:17,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:17,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-09-01 07:48:17,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-09-01 07:48:17,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:17,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:17,820 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 89 flow. Second operand 3 states and 510 transitions. [2023-09-01 07:48:17,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 193 flow [2023-09-01 07:48:17,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:17,822 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 86 flow [2023-09-01 07:48:17,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-09-01 07:48:17,825 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-09-01 07:48:17,825 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 86 flow [2023-09-01 07:48:17,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-09-01 07:48:17,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:17,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:17,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:48:17,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:17,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash -331492258, now seen corresponding path program 1 times [2023-09-01 07:48:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:17,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003938638] [2023-09-01 07:48:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003938638] [2023-09-01 07:48:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003938638] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389573393] [2023-09-01 07:48:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:17,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:17,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:17,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:48:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:48:17,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:17,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:48:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389573393] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:48:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:48:17,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917707095] [2023-09-01 07:48:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:17,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:17,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:48:18,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 341 [2023-09-01 07:48:18,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2023-09-01 07:48:18,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:18,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 341 [2023-09-01 07:48:18,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:18,304 INFO L130 PetriNetUnfolder]: 2365/3630 cut-off events. [2023-09-01 07:48:18,304 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-09-01 07:48:18,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 3630 events. 2365/3630 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18077 event pairs, 2012 based on Foata normal form. 1/2879 useless extension candidates. Maximal degree in co-relation 8420. Up to 3630 conditions per place. [2023-09-01 07:48:18,325 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-09-01 07:48:18,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 142 flow [2023-09-01 07:48:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-09-01 07:48:18,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48191593352883677 [2023-09-01 07:48:18,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-09-01 07:48:18,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-09-01 07:48:18,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:18,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-09-01 07:48:18,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-09-01 07:48:18,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:18,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:18,333 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 86 flow. Second operand 3 states and 493 transitions. [2023-09-01 07:48:18,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 142 flow [2023-09-01 07:48:18,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:18,336 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 91 flow [2023-09-01 07:48:18,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-09-01 07:48:18,337 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-09-01 07:48:18,337 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 91 flow [2023-09-01 07:48:18,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2023-09-01 07:48:18,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:18,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:18,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:18,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:18,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash 725007857, now seen corresponding path program 1 times [2023-09-01 07:48:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737362961] [2023-09-01 07:48:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737362961] [2023-09-01 07:48:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737362961] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715786501] [2023-09-01 07:48:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:18,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:18,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:18,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:48:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:18,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:48:18,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:18,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715786501] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:18,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-09-01 07:48:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854989935] [2023-09-01 07:48:18,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:48:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:48:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:48:19,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 341 [2023-09-01 07:48:19,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 91 flow. Second operand has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 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) [2023-09-01 07:48:19,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:19,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 341 [2023-09-01 07:48:19,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:19,636 INFO L130 PetriNetUnfolder]: 2667/4150 cut-off events. [2023-09-01 07:48:19,636 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-09-01 07:48:19,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9554 conditions, 4150 events. 2667/4150 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22821 event pairs, 786 based on Foata normal form. 32/3446 useless extension candidates. Maximal degree in co-relation 9543. Up to 1355 conditions per place. [2023-09-01 07:48:19,662 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 128 selfloop transitions, 13 changer transitions 7/148 dead transitions. [2023-09-01 07:48:19,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 677 flow [2023-09-01 07:48:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:48:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:48:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2079 transitions. [2023-09-01 07:48:19,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46898263027295284 [2023-09-01 07:48:19,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2079 transitions. [2023-09-01 07:48:19,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2079 transitions. [2023-09-01 07:48:19,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:19,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2079 transitions. [2023-09-01 07:48:19,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.92307692307693) internal successors, (2079), 13 states have internal predecessors, (2079), 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) [2023-09-01 07:48:19,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 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) [2023-09-01 07:48:19,684 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 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) [2023-09-01 07:48:19,684 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 91 flow. Second operand 13 states and 2079 transitions. [2023-09-01 07:48:19,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 677 flow [2023-09-01 07:48:19,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 148 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:48:19,688 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 177 flow [2023-09-01 07:48:19,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-09-01 07:48:19,691 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-09-01 07:48:19,691 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 177 flow [2023-09-01 07:48:19,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 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) [2023-09-01 07:48:19,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:19,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:19,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:19,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:19,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:19,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1152482866, now seen corresponding path program 1 times [2023-09-01 07:48:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912968989] [2023-09-01 07:48:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912968989] [2023-09-01 07:48:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912968989] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:48:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981093058] [2023-09-01 07:48:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:19,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:19,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-09-01 07:48:19,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:19,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:19,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:20,475 INFO L130 PetriNetUnfolder]: 3579/5546 cut-off events. [2023-09-01 07:48:20,475 INFO L131 PetriNetUnfolder]: For 8643/8643 co-relation queries the response was YES. [2023-09-01 07:48:20,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 5546 events. 3579/5546 cut-off events. For 8643/8643 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 30841 event pairs, 2310 based on Foata normal form. 138/4808 useless extension candidates. Maximal degree in co-relation 15662. Up to 4151 conditions per place. [2023-09-01 07:48:20,519 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-09-01 07:48:20,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 391 flow [2023-09-01 07:48:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-09-01 07:48:20,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004887585532747 [2023-09-01 07:48:20,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-09-01 07:48:20,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-09-01 07:48:20,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:20,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-09-01 07:48:20,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-09-01 07:48:20,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:20,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:20,527 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 177 flow. Second operand 3 states and 512 transitions. [2023-09-01 07:48:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 391 flow [2023-09-01 07:48:20,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 359 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-09-01 07:48:20,536 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 171 flow [2023-09-01 07:48:20,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-09-01 07:48:20,537 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-09-01 07:48:20,537 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 171 flow [2023-09-01 07:48:20,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-09-01 07:48:20,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:20,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:48:20,538 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:20,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1610230947, now seen corresponding path program 2 times [2023-09-01 07:48:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:20,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217654764] [2023-09-01 07:48:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:20,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:48:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217654764] [2023-09-01 07:48:20,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217654764] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974222524] [2023-09-01 07:48:20,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:48:20,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:20,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:20,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:48:20,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:48:20,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:48:20,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:48:20,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:48:20,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:48:20,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974222524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:20,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:48:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 07:48:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54608988] [2023-09-01 07:48:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:48:20,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:20,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-09-01 07:48:20,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:20,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:20,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:21,158 INFO L130 PetriNetUnfolder]: 3003/4640 cut-off events. [2023-09-01 07:48:21,159 INFO L131 PetriNetUnfolder]: For 5631/5631 co-relation queries the response was YES. [2023-09-01 07:48:21,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 4640 events. 3003/4640 cut-off events. For 5631/5631 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24186 event pairs, 2646 based on Foata normal form. 120/4536 useless extension candidates. Maximal degree in co-relation 12701. Up to 4640 conditions per place. [2023-09-01 07:48:21,182 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 33 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2023-09-01 07:48:21,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 217 flow [2023-09-01 07:48:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-09-01 07:48:21,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858260019550342 [2023-09-01 07:48:21,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-09-01 07:48:21,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-09-01 07:48:21,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:21,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-09-01 07:48:21,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-09-01 07:48:21,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:21,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-09-01 07:48:21,189 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 171 flow. Second operand 3 states and 497 transitions. [2023-09-01 07:48:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 217 flow [2023-09-01 07:48:21,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 207 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 07:48:21,197 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 137 flow [2023-09-01 07:48:21,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-09-01 07:48:21,197 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-09-01 07:48:21,198 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 137 flow [2023-09-01 07:48:21,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-09-01 07:48:21,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:21,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:21,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:21,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:21,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-09-01 07:48:21,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1367231076, now seen corresponding path program 1 times [2023-09-01 07:48:21,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:21,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551882439] [2023-09-01 07:48:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551882439] [2023-09-01 07:48:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551882439] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004857723] [2023-09-01 07:48:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:21,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:21,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:21,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:48:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:48:21,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:21,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:48:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004857723] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:48:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:48:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336215094] [2023-09-01 07:48:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:48:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:21,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:48:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:48:21,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-09-01 07:48:21,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 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) [2023-09-01 07:48:21,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:21,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-09-01 07:48:21,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:21,833 INFO L130 PetriNetUnfolder]: 1743/2708 cut-off events. [2023-09-01 07:48:21,833 INFO L131 PetriNetUnfolder]: For 1282/1282 co-relation queries the response was YES. [2023-09-01 07:48:21,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 2708 events. 1743/2708 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13204 event pairs, 636 based on Foata normal form. 0/2708 useless extension candidates. Maximal degree in co-relation 7393. Up to 1197 conditions per place. [2023-09-01 07:48:21,841 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-09-01 07:48:21,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 409 flow [2023-09-01 07:48:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:48:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:48:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 673 transitions. [2023-09-01 07:48:21,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934017595307918 [2023-09-01 07:48:21,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 673 transitions. [2023-09-01 07:48:21,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 673 transitions. [2023-09-01 07:48:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:21,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 673 transitions. [2023-09-01 07:48:21,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 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) [2023-09-01 07:48:21,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-09-01 07:48:21,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-09-01 07:48:21,850 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 137 flow. Second operand 4 states and 673 transitions. [2023-09-01 07:48:21,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 409 flow [2023-09-01 07:48:21,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:21,857 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-09-01 07:48:21,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-09-01 07:48:21,857 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-09-01 07:48:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-09-01 07:48:21,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 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) [2023-09-01 07:48:21,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-09-01 07:48:21,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-09-01 07:48:21,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-09-01 07:48:21,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:22,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:22,069 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:22,073 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:48:22,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:48:22,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:48:22 BasicIcfg [2023-09-01 07:48:22,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:48:22,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:48:22,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:48:22,076 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:48:22,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:06" (3/4) ... [2023-09-01 07:48:22,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:48:22,085 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:48:22,085 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:48:22,085 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 07:48:22,092 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-09-01 07:48:22,093 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:48:22,093 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:48:22,093 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:48:22,122 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:48:22,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:48:22,123 INFO L158 Benchmark]: Toolchain (without parser) took 16419.90ms. Allocated memory was 88.1MB in the beginning and 763.4MB in the end (delta: 675.3MB). Free memory was 65.1MB in the beginning and 381.0MB in the end (delta: -315.9MB). Peak memory consumption was 358.3MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,124 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 58.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:48:22,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.18ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 52.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.83ms. Allocated memory is still 88.1MB. Free memory was 52.5MB in the beginning and 50.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,124 INFO L158 Benchmark]: Boogie Preprocessor took 56.06ms. Allocated memory is still 88.1MB. Free memory was 50.6MB in the beginning and 48.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,125 INFO L158 Benchmark]: RCFGBuilder took 652.88ms. Allocated memory is still 88.1MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,125 INFO L158 Benchmark]: TraceAbstraction took 15269.55ms. Allocated memory was 88.1MB in the beginning and 763.4MB in the end (delta: 675.3MB). Free memory was 46.7MB in the beginning and 385.2MB in the end (delta: -338.5MB). Peak memory consumption was 335.7MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,125 INFO L158 Benchmark]: Witness Printer took 47.42ms. Allocated memory is still 763.4MB. Free memory was 385.2MB in the beginning and 381.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:48:22,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 58.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.18ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 52.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.83ms. Allocated memory is still 88.1MB. Free memory was 52.5MB in the beginning and 50.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.06ms. Allocated memory is still 88.1MB. Free memory was 50.6MB in the beginning and 48.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 652.88ms. Allocated memory is still 88.1MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15269.55ms. Allocated memory was 88.1MB in the beginning and 763.4MB in the end (delta: 675.3MB). Free memory was 46.7MB in the beginning and 385.2MB in the end (delta: -338.5MB). Peak memory consumption was 335.7MB. Max. memory is 16.1GB. * Witness Printer took 47.42ms. Allocated memory is still 763.4MB. Free memory was 385.2MB in the beginning and 381.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 154 PlacesBefore, 33 PlacesAfterwards, 155 TransitionsBefore, 26 TransitionsAfterwards, 1604 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 162 TotalNumberOfCompositions, 2248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1553, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 837, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1553, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 205 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.1s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 973 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 835 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 10 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 9 NumberOfNonLiveVariables, 925 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 29/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:48:22,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE