./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-3.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/unroll-3.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 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --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 08:39:14,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:39:14,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:39:14,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:39:14,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:39:14,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:39:14,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:39:14,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:39:14,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:39:14,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:39:14,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:39:14,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:39:14,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:39:14,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:39:14,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:39:14,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:39:14,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:39:14,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:39:14,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:39:14,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:39:14,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:39:14,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:39:14,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:39:14,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:39:14,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:39:14,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:39:14,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:39:14,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:39:14,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:39:14,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:39:14,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:39:14,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:39:14,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:39:14,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:39:14,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:39:14,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:39:14,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:39:14,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:39:14,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:39:14,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:39:14,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:39:14,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:39:14,233 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:39:14,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:39:14,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:39:14,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:39:14,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:39:14,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:39:14,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:39:14,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:39:14,236 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:39:14,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:39:14,237 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:39:14,237 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:39:14,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:39:14,238 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:39:14,239 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:39:14,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:39:14,239 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:39:14,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:39:14,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:39:14,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:39:14,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:39:14,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:39:14,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:39:14,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:39:14,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:39:14,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:39:14,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:39:14,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:39:14,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:39:14,242 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:39:14,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:39:14,242 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:39:14,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:39:14,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:39:14,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:39:14,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:39:14,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:39:14,559 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:39:14,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-09-01 08:39:15,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:39:15,813 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:39:15,814 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-09-01 08:39:15,827 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a291a05/8db4aeeaf1044dc19d65aad169608a6c/FLAG80c55f61f [2023-09-01 08:39:15,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a291a05/8db4aeeaf1044dc19d65aad169608a6c [2023-09-01 08:39:15,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:39:15,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:39:15,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:39:15,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:39:15,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:39:15,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:39:15" (1/1) ... [2023-09-01 08:39:15,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb00787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:15, skipping insertion in model container [2023-09-01 08:39:15,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:39:15" (1/1) ... [2023-09-01 08:39:15,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:39:15,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:39:16,050 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/unroll-3.wvr.c[2500,2513] [2023-09-01 08:39:16,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:39:16,071 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:39:16,106 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/unroll-3.wvr.c[2500,2513] [2023-09-01 08:39:16,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:39:16,127 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:39:16,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16 WrapperNode [2023-09-01 08:39:16,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:39:16,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:39:16,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:39:16,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:39:16,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,183 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 149 [2023-09-01 08:39:16,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:39:16,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:39:16,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:39:16,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:39:16,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:39:16,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:39:16,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:39:16,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:39:16,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (1/1) ... [2023-09-01 08:39:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:39:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:16,263 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 08:39:16,273 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 08:39:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:39:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:39:16,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:39:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:39:16,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:39:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:39:16,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:39:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:39:16,300 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 08:39:16,399 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:39:16,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:39:16,691 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:39:16,699 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:39:16,712 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 08:39:16,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:16 BoogieIcfgContainer [2023-09-01 08:39:16,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:39:16,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:39:16,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:39:16,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:39:16,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:39:15" (1/3) ... [2023-09-01 08:39:16,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e82c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:39:16, skipping insertion in model container [2023-09-01 08:39:16,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:16" (2/3) ... [2023-09-01 08:39:16,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e82c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:39:16, skipping insertion in model container [2023-09-01 08:39:16,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:16" (3/3) ... [2023-09-01 08:39:16,724 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2023-09-01 08:39:16,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:39:16,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:39:16,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 08:39:16,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:39:16,862 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:39:16,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 172 transitions, 360 flow [2023-09-01 08:39:17,015 INFO L130 PetriNetUnfolder]: 15/170 cut-off events. [2023-09-01 08:39:17,019 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:39:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 15/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 168 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-09-01 08:39:17,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 172 transitions, 360 flow [2023-09-01 08:39:17,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:17,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:39:17,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:17,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:17,068 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-09-01 08:39:17,068 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:17,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 62 events. 4/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-09-01 08:39:17,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-09-01 08:39:20,769 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-09-01 08:39:20,770 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-09-01 08:39:20,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:39:20,792 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;@4fc62e3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:39:20,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 08:39:20,795 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:39:20,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:20,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:20,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:39:20,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:20,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 18688, now seen corresponding path program 1 times [2023-09-01 08:39:20,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489534093] [2023-09-01 08:39:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:20,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:21,009 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 08:39:21,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:21,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489534093] [2023-09-01 08:39:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489534093] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:39:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:39:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:39:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784976509] [2023-09-01 08:39:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:39:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:39:21,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:39:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:39:21,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 252 [2023-09-01 08:39:21,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 08:39:21,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:21,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 252 [2023-09-01 08:39:21,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:21,113 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 08:39:21,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:21,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 5 events. 1/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-09-01 08:39:21,115 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 3 selfloop transitions, 2 changer transitions 0/5 dead transitions. [2023-09-01 08:39:21,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 5 transitions, 20 flow [2023-09-01 08:39:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:39:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:39:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-09-01 08:39:21,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124338624338624 [2023-09-01 08:39:21,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-09-01 08:39:21,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-09-01 08:39:21,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:21,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-09-01 08:39:21,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:39:21,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 08:39:21,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 08:39:21,147 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 463 transitions. [2023-09-01 08:39:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 5 transitions, 20 flow [2023-09-01 08:39:21,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 5 transitions, 20 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:39:21,150 INFO L231 Difference]: Finished difference. Result has 7 places, 5 transitions, 22 flow [2023-09-01 08:39:21,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=7, PETRI_TRANSITIONS=5} [2023-09-01 08:39:21,154 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-09-01 08:39:21,155 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 5 transitions, 22 flow [2023-09-01 08:39:21,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 08:39:21,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:21,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:39:21,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:39:21,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:21,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash 580377, now seen corresponding path program 1 times [2023-09-01 08:39:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223359095] [2023-09-01 08:39:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:21,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:21,244 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 08:39:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223359095] [2023-09-01 08:39:21,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223359095] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:21,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238314501] [2023-09-01 08:39:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:21,257 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 08:39:21,287 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 08:39:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:21,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:39:21,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:21,387 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 08:39:21,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:39:21,402 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 08:39:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238314501] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:39:21,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:39:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:39:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844862900] [2023-09-01 08:39:21,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:39:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:39:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:39:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:39:21,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 252 [2023-09-01 08:39:21,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 5 transitions, 22 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 08:39:21,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:21,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 252 [2023-09-01 08:39:21,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:21,483 INFO L130 PetriNetUnfolder]: 4/11 cut-off events. [2023-09-01 08:39:21,484 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:21,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 4/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 27. Up to 11 conditions per place. [2023-09-01 08:39:21,484 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 2 selfloop transitions, 9 changer transitions 0/11 dead transitions. [2023-09-01 08:39:21,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 11 transitions, 68 flow [2023-09-01 08:39:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:39:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:39:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1078 transitions. [2023-09-01 08:39:21,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-09-01 08:39:21,490 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1078 transitions. [2023-09-01 08:39:21,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1078 transitions. [2023-09-01 08:39:21,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:21,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1078 transitions. [2023-09-01 08:39:21,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 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 08:39:21,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 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 08:39:21,507 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 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 08:39:21,507 INFO L175 Difference]: Start difference. First operand has 7 places, 5 transitions, 22 flow. Second operand 7 states and 1078 transitions. [2023-09-01 08:39:21,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 11 transitions, 68 flow [2023-09-01 08:39:21,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 11 transitions, 64 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:39:21,509 INFO L231 Difference]: Finished difference. Result has 15 places, 11 transitions, 77 flow [2023-09-01 08:39:21,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=15, PETRI_TRANSITIONS=11} [2023-09-01 08:39:21,510 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 11 predicate places. [2023-09-01 08:39:21,510 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 11 transitions, 77 flow [2023-09-01 08:39:21,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 08:39:21,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:21,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:39:21,520 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 08:39:21,717 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 08:39:21,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:21,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash 17992735, now seen corresponding path program 1 times [2023-09-01 08:39:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283634598] [2023-09-01 08:39:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:39:21,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:21,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283634598] [2023-09-01 08:39:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283634598] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:39:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:39:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:39:21,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330806850] [2023-09-01 08:39:21,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:39:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:39:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:21,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:39:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:39:21,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 252 [2023-09-01 08:39:21,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 08:39:21,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:21,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 252 [2023-09-01 08:39:21,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:21,877 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-09-01 08:39:21,877 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:39:21,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 7 events. 1/7 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 14. Up to 7 conditions per place. [2023-09-01 08:39:21,878 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 6 selfloop transitions, 1 changer transitions 0/7 dead transitions. [2023-09-01 08:39:21,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 64 flow [2023-09-01 08:39:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:39:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:39:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-09-01 08:39:21,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2023-09-01 08:39:21,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-09-01 08:39:21,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-09-01 08:39:21,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:21,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-09-01 08:39:21,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 08:39:21,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 08:39:21,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 08:39:21,888 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 77 flow. Second operand 3 states and 460 transitions. [2023-09-01 08:39:21,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 64 flow [2023-09-01 08:39:21,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 50 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:39:21,890 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 38 flow [2023-09-01 08:39:21,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-09-01 08:39:21,891 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-09-01 08:39:21,891 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 38 flow [2023-09-01 08:39:21,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 08:39:21,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:21,892 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:39:21,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:39:21,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:21,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash 111183680, now seen corresponding path program 2 times [2023-09-01 08:39:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:21,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490383472] [2023-09-01 08:39:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:22,026 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 08:39:22,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490383472] [2023-09-01 08:39:22,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490383472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067921356] [2023-09-01 08:39:22,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:39:22,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:22,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:22,049 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 08:39:22,078 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 08:39:22,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:39:22,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:39:22,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:39:22,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:39:22,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:39:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:39:22,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067921356] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:39:22,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:39:22,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-09-01 08:39:22,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198853152] [2023-09-01 08:39:22,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:39:22,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:39:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:22,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:39:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:39:22,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 252 [2023-09-01 08:39:22,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 38 flow. Second operand has 9 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 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 08:39:22,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:22,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 252 [2023-09-01 08:39:22,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:22,309 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-09-01 08:39:22,310 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 08:39:22,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 7 events. 1/7 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2023-09-01 08:39:22,311 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-09-01 08:39:22,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 48 flow [2023-09-01 08:39:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:39:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:39:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1201 transitions. [2023-09-01 08:39:22,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595734126984127 [2023-09-01 08:39:22,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1201 transitions. [2023-09-01 08:39:22,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1201 transitions. [2023-09-01 08:39:22,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:22,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1201 transitions. [2023-09-01 08:39:22,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.125) internal successors, (1201), 8 states have internal predecessors, (1201), 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 08:39:22,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 252.0) internal successors, (2268), 9 states have internal predecessors, (2268), 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 08:39:22,324 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 252.0) internal successors, (2268), 9 states have internal predecessors, (2268), 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 08:39:22,324 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 38 flow. Second operand 8 states and 1201 transitions. [2023-09-01 08:39:22,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 48 flow [2023-09-01 08:39:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 35 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 08:39:22,325 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-09-01 08:39:22,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-09-01 08:39:22,327 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 11 predicate places. [2023-09-01 08:39:22,327 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-09-01 08:39:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 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 08:39:22,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-09-01 08:39:22,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-09-01 08:39:22,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 08:39:22,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 08:39:22,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:39:22,536 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,SelfDestructingSolverStorable3 [2023-09-01 08:39:22,537 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-09-01 08:39:22,539 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:39:22,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:39:22,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:39:22 BasicIcfg [2023-09-01 08:39:22,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:39:22,542 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:39:22,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:39:22,542 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:39:22,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:16" (3/4) ... [2023-09-01 08:39:22,545 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:39:22,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:39:22,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:39:22,552 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-09-01 08:39:22,552 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:39:22,552 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:39:22,552 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:39:22,599 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:39:22,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:39:22,600 INFO L158 Benchmark]: Toolchain (without parser) took 6756.35ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 60.1MB in the beginning and 76.1MB in the end (delta: -16.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,600 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:39:22,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.53ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 48.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.98ms. Allocated memory is still 79.7MB. Free memory was 48.6MB in the beginning and 46.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,601 INFO L158 Benchmark]: Boogie Preprocessor took 50.32ms. Allocated memory is still 79.7MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:39:22,602 INFO L158 Benchmark]: RCFGBuilder took 480.83ms. Allocated memory is still 79.7MB. Free memory was 44.9MB in the beginning and 49.1MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,602 INFO L158 Benchmark]: TraceAbstraction took 5823.79ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 48.6MB in the beginning and 79.9MB in the end (delta: -31.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,602 INFO L158 Benchmark]: Witness Printer took 57.33ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 76.1MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:39:22,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.53ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 48.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.98ms. Allocated memory is still 79.7MB. Free memory was 48.6MB in the beginning and 46.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.32ms. Allocated memory is still 79.7MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 480.83ms. Allocated memory is still 79.7MB. Free memory was 44.9MB in the beginning and 49.1MB in the end (delta: -4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5823.79ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 48.6MB in the beginning and 79.9MB in the end (delta: -31.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 57.33ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 76.1MB in the end (delta: 3.9MB). 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: 3.7s, 59 PlacesBefore, 4 PlacesAfterwards, 62 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 80 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 101]: 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 5 procedures, 218 locations, 4 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: 5.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 13 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=2, InterpolantAutomatonStates: 21, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 SizeOfPredicates, 3 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 15/36 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:39:22,620 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