./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-4.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-4.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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --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 08:39:25,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:39:25,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:39:25,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:39:25,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:39:25,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:39:25,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:39:25,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:39:25,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:39:25,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:39:25,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:39:25,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:39:25,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:39:25,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:39:25,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:39:25,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:39:25,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:39:25,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:39:25,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:39:25,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:39:25,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:39:25,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:39:25,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:39:25,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:39:25,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:39:25,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:39:25,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:39:25,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:39:25,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:39:25,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:39:25,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:39:25,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:39:25,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:39:25,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:39:25,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:39:25,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:39:25,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:39:25,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:39:25,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:39:25,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:39:25,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:39:25,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:39:25,171 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:39:25,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:39:25,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:39:25,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:39:25,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:39:25,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:39:25,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:39:25,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:39:25,175 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:39:25,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:39:25,176 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:39:25,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:39:25,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:39:25,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:39:25,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:39:25,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:39:25,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:39:25,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:39:25,178 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:39:25,178 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:39:25,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:39:25,178 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:39:25,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:39:25,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:39:25,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:39:25,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:39:25,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:39:25,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:39:25,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:39:25,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:39:25,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:39:25,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:39:25,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:39:25,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:39:25,181 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:39:25,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:39:25,181 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:39:25,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:39:25,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:39:25,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:39:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:39:25,534 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:39:25,534 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:39:25,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-09-01 08:39:26,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:39:26,984 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:39:26,985 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-09-01 08:39:26,991 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01eb324a8/002b20b19a5f45e68373baf3cbe591d1/FLAG8a81ab8b7 [2023-09-01 08:39:27,008 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01eb324a8/002b20b19a5f45e68373baf3cbe591d1 [2023-09-01 08:39:27,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:39:27,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:39:27,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:39:27,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:39:27,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:39:27,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea55386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27, skipping insertion in model container [2023-09-01 08:39:27,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:39:27,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:39:27,200 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-4.wvr.c[2572,2585] [2023-09-01 08:39:27,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:39:27,214 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:39:27,250 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-4.wvr.c[2572,2585] [2023-09-01 08:39:27,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:39:27,272 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:39:27,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27 WrapperNode [2023-09-01 08:39:27,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:39:27,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:39:27,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:39:27,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:39:27,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,308 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 159 [2023-09-01 08:39:27,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:39:27,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:39:27,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:39:27,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:39:27,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:39:27,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:39:27,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:39:27,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:39:27,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (1/1) ... [2023-09-01 08:39:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:39:27,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:27,373 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 08:39:27,394 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 08:39:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:39:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:39:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:39:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:39:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:39:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:39:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:39:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:39:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:39:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:39:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:39:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:39:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:39:27,409 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 08:39:27,490 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:39:27,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:39:27,833 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:39:27,841 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:39:27,842 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 08:39:27,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:27 BoogieIcfgContainer [2023-09-01 08:39:27,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:39:27,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:39:27,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:39:27,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:39:27,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:39:27" (1/3) ... [2023-09-01 08:39:27,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e20d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:39:27, skipping insertion in model container [2023-09-01 08:39:27,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:39:27" (2/3) ... [2023-09-01 08:39:27,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e20d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:39:27, skipping insertion in model container [2023-09-01 08:39:27,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:27" (3/3) ... [2023-09-01 08:39:27,851 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-09-01 08:39:27,858 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:39:27,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:39:27,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 08:39:27,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:39:28,027 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:39:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 386 flow [2023-09-01 08:39:28,179 INFO L130 PetriNetUnfolder]: 16/183 cut-off events. [2023-09-01 08:39:28,180 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:39:28,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 16/183 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. 0/165 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-09-01 08:39:28,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 185 transitions, 386 flow [2023-09-01 08:39:28,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:28,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:39:28,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:28,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:28,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-09-01 08:39:28,226 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-09-01 08:39:28,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:28,226 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 08:39:28,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-09-01 08:39:31,613 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-09-01 08:39:31,613 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-09-01 08:39:31,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:39:31,628 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;@35cea2e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:39:31,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 08:39:31,631 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:39:31,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:31,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:31,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:39:31,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:31,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash 20043, now seen corresponding path program 1 times [2023-09-01 08:39:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:31,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437598656] [2023-09-01 08:39:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:31,868 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 08:39:31,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437598656] [2023-09-01 08:39:31,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437598656] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:39:31,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:39:31,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:39:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668243879] [2023-09-01 08:39:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:39:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:39:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:39:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:39:31,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 265 [2023-09-01 08:39:31,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 08:39:31,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:31,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 265 [2023-09-01 08:39:31,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:31,998 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 08:39:31,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:31,998 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 08:39:31,999 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 3 selfloop transitions, 2 changer transitions 0/5 dead transitions. [2023-09-01 08:39:31,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 5 transitions, 20 flow [2023-09-01 08:39:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:39:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:39:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-09-01 08:39:32,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276729559748427 [2023-09-01 08:39:32,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-09-01 08:39:32,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-09-01 08:39:32,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:32,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-09-01 08:39:32,031 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 08:39:32,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 08:39:32,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 08:39:32,039 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 499 transitions. [2023-09-01 08:39:32,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 5 transitions, 20 flow [2023-09-01 08:39:32,041 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 08:39:32,042 INFO L231 Difference]: Finished difference. Result has 7 places, 5 transitions, 22 flow [2023-09-01 08:39:32,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, 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 08:39:32,048 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-09-01 08:39:32,048 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 5 transitions, 22 flow [2023-09-01 08:39:32,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 08:39:32,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:32,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:39:32,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:39:32,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:32,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 623055, now seen corresponding path program 1 times [2023-09-01 08:39:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372712835] [2023-09-01 08:39:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:32,151 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 08:39:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372712835] [2023-09-01 08:39:32,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372712835] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003253362] [2023-09-01 08:39:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:32,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:32,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:32,155 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 08:39:32,201 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 08:39:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:32,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:39:32,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:32,303 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 08:39:32,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:39:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003253362] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:39:32,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:39:32,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:39:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859853690] [2023-09-01 08:39:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:39:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:39:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:39:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:39:32,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 265 [2023-09-01 08:39:32,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 5 transitions, 22 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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 08:39:32,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:32,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 265 [2023-09-01 08:39:32,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:32,332 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-09-01 08:39:32,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:32,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2023-09-01 08:39:32,333 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-09-01 08:39:32,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 4 transitions, 26 flow [2023-09-01 08:39:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:39:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:39:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2023-09-01 08:39:32,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6235849056603774 [2023-09-01 08:39:32,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2023-09-01 08:39:32,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2023-09-01 08:39:32,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:32,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2023-09-01 08:39:32,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 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 08:39:32,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 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 08:39:32,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 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 08:39:32,341 INFO L175 Difference]: Start difference. First operand has 7 places, 5 transitions, 22 flow. Second operand 4 states and 661 transitions. [2023-09-01 08:39:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 4 transitions, 26 flow [2023-09-01 08:39:32,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 4 transitions, 22 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:39:32,342 INFO L231 Difference]: Finished difference. Result has 8 places, 4 transitions, 18 flow [2023-09-01 08:39:32,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=5, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=18, PETRI_PLACES=8, PETRI_TRANSITIONS=4} [2023-09-01 08:39:32,343 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 4 predicate places. [2023-09-01 08:39:32,343 INFO L495 AbstractCegarLoop]: Abstraction has has 8 places, 4 transitions, 18 flow [2023-09-01 08:39:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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 08:39:32,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:39:32,353 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 08:39:32,549 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 08:39:32,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:32,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 623066, now seen corresponding path program 1 times [2023-09-01 08:39:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350321766] [2023-09-01 08:39:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:32,625 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 08:39:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:32,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350321766] [2023-09-01 08:39:32,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350321766] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:32,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892643275] [2023-09-01 08:39:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:32,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:32,635 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 08:39:32,659 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 08:39:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:32,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:39:32,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:32,703 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 08:39:32,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:39:32,723 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 08:39:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892643275] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:39:32,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:39:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 08:39:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262429819] [2023-09-01 08:39:32,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:39:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:39:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:39:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:39:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 265 [2023-09-01 08:39:32,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 4 transitions, 18 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 08:39:32,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:32,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 265 [2023-09-01 08:39:32,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:32,759 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-09-01 08:39:32,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:39:32,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 15. Up to 7 conditions per place. [2023-09-01 08:39:32,760 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-09-01 08:39:32,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 7 transitions, 44 flow [2023-09-01 08:39:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:39:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:39:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 994 transitions. [2023-09-01 08:39:32,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6251572327044025 [2023-09-01 08:39:32,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 994 transitions. [2023-09-01 08:39:32,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 994 transitions. [2023-09-01 08:39:32,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:32,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 994 transitions. [2023-09-01 08:39:32,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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 08:39:32,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 08:39:32,771 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 08:39:32,771 INFO L175 Difference]: Start difference. First operand has 8 places, 4 transitions, 18 flow. Second operand 6 states and 994 transitions. [2023-09-01 08:39:32,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 7 transitions, 44 flow [2023-09-01 08:39:32,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 41 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:39:32,772 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-09-01 08:39:32,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-09-01 08:39:32,773 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-09-01 08:39:32,773 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-09-01 08:39:32,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 08:39:32,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:32,774 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:39:32,795 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 08:39:32,995 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 08:39:32,996 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 08:39:32,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1383272278, now seen corresponding path program 2 times [2023-09-01 08:39:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049673273] [2023-09-01 08:39:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:33,107 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 08:39:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:33,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049673273] [2023-09-01 08:39:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049673273] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186754930] [2023-09-01 08:39:33,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:39:33,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:33,117 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 08:39:33,121 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 08:39:33,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:39:33,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:39:33,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:39:33,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:33,214 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 08:39:33,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:39:33,282 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 08:39:33,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186754930] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:39:33,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:39:33,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:39:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747065655] [2023-09-01 08:39:33,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:39:33,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:39:33,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:33,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:39:33,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:39:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 265 [2023-09-01 08:39:33,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 13 states, 13 states have (on average 165.07692307692307) internal successors, (2146), 13 states have internal predecessors, (2146), 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 08:39:33,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:33,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 265 [2023-09-01 08:39:33,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:33,388 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-09-01 08:39:33,388 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-09-01 08:39:33,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 13 events. 1/13 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 6/19 useless extension candidates. Maximal degree in co-relation 49. Up to 13 conditions per place. [2023-09-01 08:39:33,389 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 2 selfloop transitions, 11 changer transitions 0/13 dead transitions. [2023-09-01 08:39:33,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 113 flow [2023-09-01 08:39:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:39:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:39:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1987 transitions. [2023-09-01 08:39:33,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6248427672955975 [2023-09-01 08:39:33,394 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1987 transitions. [2023-09-01 08:39:33,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1987 transitions. [2023-09-01 08:39:33,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:33,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1987 transitions. [2023-09-01 08:39:33,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 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 08:39:33,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 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 08:39:33,407 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 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 08:39:33,407 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 12 states and 1987 transitions. [2023-09-01 08:39:33,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 113 flow [2023-09-01 08:39:33,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 99 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:39:33,409 INFO L231 Difference]: Finished difference. Result has 30 places, 13 transitions, 121 flow [2023-09-01 08:39:33,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=121, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2023-09-01 08:39:33,411 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 26 predicate places. [2023-09-01 08:39:33,411 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 13 transitions, 121 flow [2023-09-01 08:39:33,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 165.07692307692307) internal successors, (2146), 13 states have internal predecessors, (2146), 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 08:39:33,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:39:33,412 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-09-01 08:39:33,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:39:33,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:33,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 08:39:33,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:39:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1233862870, now seen corresponding path program 3 times [2023-09-01 08:39:33,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:39:33,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984428515] [2023-09-01 08:39:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:39:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:39:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:39:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:39:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:39:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984428515] [2023-09-01 08:39:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984428515] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:39:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197749703] [2023-09-01 08:39:33,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:39:33,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:33,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:39:33,807 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 08:39:33,819 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 08:39:33,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 08:39:33,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:39:33,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:39:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:39:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-09-01 08:39:33,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:39:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-09-01 08:39:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197749703] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:39:33,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:39:33,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-09-01 08:39:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678524621] [2023-09-01 08:39:33,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:39:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:39:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:39:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:39:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-09-01 08:39:34,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 265 [2023-09-01 08:39:34,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 13 transitions, 121 flow. Second operand has 15 states, 15 states have (on average 162.06666666666666) internal successors, (2431), 15 states have internal predecessors, (2431), 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 08:39:34,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:39:34,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 265 [2023-09-01 08:39:34,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:39:34,206 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-09-01 08:39:34,207 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 08:39:34,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 13 events. 1/13 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 58. Up to 10 conditions per place. [2023-09-01 08:39:34,208 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-09-01 08:39:34,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 13 transitions, 133 flow [2023-09-01 08:39:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 08:39:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 08:39:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2269 transitions. [2023-09-01 08:39:34,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6115902964959569 [2023-09-01 08:39:34,214 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2269 transitions. [2023-09-01 08:39:34,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2269 transitions. [2023-09-01 08:39:34,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:39:34,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2269 transitions. [2023-09-01 08:39:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.07142857142858) internal successors, (2269), 14 states have internal predecessors, (2269), 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 08:39:34,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 265.0) internal successors, (3975), 15 states have internal predecessors, (3975), 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 08:39:34,227 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 265.0) internal successors, (3975), 15 states have internal predecessors, (3975), 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 08:39:34,227 INFO L175 Difference]: Start difference. First operand has 30 places, 13 transitions, 121 flow. Second operand 14 states and 2269 transitions. [2023-09-01 08:39:34,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 13 transitions, 133 flow [2023-09-01 08:39:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 59 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-09-01 08:39:34,229 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-09-01 08:39:34,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-09-01 08:39:34,230 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 23 predicate places. [2023-09-01 08:39:34,230 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-09-01 08:39:34,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 162.06666666666666) internal successors, (2431), 15 states have internal predecessors, (2431), 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 08:39:34,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-09-01 08:39:34,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-09-01 08:39:34,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 08:39:34,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 08:39:34,241 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 08:39:34,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:39:34,439 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-09-01 08:39:34,442 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:39:34,442 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:39:34,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:39:34 BasicIcfg [2023-09-01 08:39:34,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:39:34,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:39:34,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:39:34,445 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:39:34,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:39:27" (3/4) ... [2023-09-01 08:39:34,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:39:34,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:39:34,452 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:39:34,455 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-09-01 08:39:34,456 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:39:34,456 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:39:34,456 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:39:34,496 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:39:34,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:39:34,496 INFO L158 Benchmark]: Toolchain (without parser) took 7485.66ms. Allocated memory was 62.9MB in the beginning and 109.1MB in the end (delta: 46.1MB). Free memory was 35.3MB in the beginning and 41.0MB in the end (delta: -5.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,497 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:39:34,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.09ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 35.1MB in the beginning and 70.3MB in the end (delta: -35.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.44ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 68.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,497 INFO L158 Benchmark]: Boogie Preprocessor took 34.73ms. Allocated memory is still 90.2MB. Free memory was 68.0MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,497 INFO L158 Benchmark]: RCFGBuilder took 499.79ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 49.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,498 INFO L158 Benchmark]: TraceAbstraction took 6598.49ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 48.4MB in the beginning and 44.1MB in the end (delta: 4.4MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,498 INFO L158 Benchmark]: Witness Printer took 51.22ms. Allocated memory is still 109.1MB. Free memory was 44.1MB in the beginning and 41.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:39:34,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.09ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 35.1MB in the beginning and 70.3MB in the end (delta: -35.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.44ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 68.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.73ms. Allocated memory is still 90.2MB. Free memory was 68.0MB in the beginning and 66.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.79ms. Allocated memory is still 90.2MB. Free memory was 66.6MB in the beginning and 49.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6598.49ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 48.4MB in the beginning and 44.1MB in the end (delta: 4.4MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Witness Printer took 51.22ms. Allocated memory is still 109.1MB. Free memory was 44.1MB in the beginning and 41.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 59 PlacesBefore, 4 PlacesAfterwards, 62 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 8 FixpointIterations, 58 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 19 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: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: 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, 242 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: 6.4s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 15 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 39, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 50 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 SizeOfPredicates, 3 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 91/200 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 08:39:34,516 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