./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-2.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 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:58:13,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:58:13,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:58:13,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:58:13,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:58:13,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:58:13,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:58:13,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:58:13,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:58:13,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:58:13,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:58:13,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:58:13,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:58:13,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:58:13,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:58:13,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:58:13,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:58:13,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:58:13,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:58:13,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:58:13,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:58:13,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:58:13,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:58:13,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:58:13,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:58:13,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:58:13,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:58:13,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:58:13,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:58:13,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:58:13,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:58:13,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:58:13,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:58:13,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:58:13,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:58:13,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:58:13,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:58:13,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:58:13,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:58:13,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:58:13,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:58:13,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:58:13,189 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:58:13,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:58:13,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:58:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:58:13,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:58:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:58:13,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:58:13,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:58:13,192 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:58:13,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:58:13,193 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:58:13,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:58:13,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:58:13,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:58:13,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:58:13,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:58:13,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:58:13,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:58:13,195 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:58:13,195 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:58:13,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:58:13,196 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:58:13,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:58:13,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:58:13,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:58:13,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:58:13,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:58:13,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:58:13,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:58:13,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:58:13,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:58:13,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:58:13,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:58:13,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:58:13,198 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:58:13,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:58:13,199 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:58:13,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:58:13,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:58:13,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:58:13,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:58:13,545 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:58:13,546 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:58:13,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-30 15:58:14,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:58:14,874 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:58:14,874 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-30 15:58:14,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad5a3c4e/e264dcd736f34fe6a142fa67b9acc102/FLAGae8f321d5 [2023-08-30 15:58:14,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad5a3c4e/e264dcd736f34fe6a142fa67b9acc102 [2023-08-30 15:58:14,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:58:14,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:58:14,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:58:14,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:58:14,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:58:14,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:58:14" (1/1) ... [2023-08-30 15:58:14,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23114a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:14, skipping insertion in model container [2023-08-30 15:58:14,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:58:14" (1/1) ... [2023-08-30 15:58:14,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:58:14,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:58:15,091 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-2.wvr.c[2428,2441] [2023-08-30 15:58:15,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:58:15,105 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:58:15,122 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-2.wvr.c[2428,2441] [2023-08-30 15:58:15,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:58:15,138 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:58:15,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15 WrapperNode [2023-08-30 15:58:15,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:58:15,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:58:15,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:58:15,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:58:15,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,198 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 139 [2023-08-30 15:58:15,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:58:15,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:58:15,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:58:15,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:58:15,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,241 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:58:15,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:58:15,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:58:15,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:58:15,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (1/1) ... [2023-08-30 15:58:15,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:58:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:58:15,286 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) [2023-08-30 15:58:15,312 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 [2023-08-30 15:58:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:58:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:58:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:58:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:58:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:58:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:58:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:58:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:58:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:58:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:58:15,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:58:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:58:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:58:15,333 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:58:15,466 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:58:15,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:58:15,775 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:58:15,782 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:58:15,782 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:58:15,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:58:15 BoogieIcfgContainer [2023-08-30 15:58:15,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:58:15,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:58:15,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:58:15,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:58:15,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:58:14" (1/3) ... [2023-08-30 15:58:15,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f001f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:58:15, skipping insertion in model container [2023-08-30 15:58:15,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:58:15" (2/3) ... [2023-08-30 15:58:15,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f001f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:58:15, skipping insertion in model container [2023-08-30 15:58:15,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:58:15" (3/3) ... [2023-08-30 15:58:15,796 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2023-08-30 15:58:15,804 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:58:15,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:58:15,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 15:58:15,813 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:58:15,940 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:58:15,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 334 flow [2023-08-30 15:58:16,081 INFO L130 PetriNetUnfolder]: 14/157 cut-off events. [2023-08-30 15:58:16,085 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:58:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 14/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-30 15:58:16,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 159 transitions, 334 flow [2023-08-30 15:58:16,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-08-30 15:58:16,098 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:58:16,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 15:58:16,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 15:58:16,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-08-30 15:58:16,137 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-08-30 15:58:16,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:58:16,138 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. [2023-08-30 15:58:16,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-30 15:58:19,507 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-30 15:58:19,507 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-30 15:58:19,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:58:19,522 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;@73517424, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:58:19,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 15:58:19,524 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:58:19,524 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:58:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:58:19,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:58:19,525 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)] === [2023-08-30 15:58:19,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:58:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 17219, now seen corresponding path program 1 times [2023-08-30 15:58:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:58:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495203669] [2023-08-30 15:58:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:58:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:19,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:58:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495203669] [2023-08-30 15:58:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495203669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:58:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:58:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:58:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410670365] [2023-08-30 15:58:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:58:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:58:19,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:58:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:58:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:58:19,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 15:58:19,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:58:19,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:58:19,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 15:58:19,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:58:19,856 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 15:58:19,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:58:19,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 1/3 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. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-30 15:58:19,858 INFO L137 encePairwiseOnDemand]: 234/236 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2023-08-30 15:58:19,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2023-08-30 15:58:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:58:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:58:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 15:58:19,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2023-08-30 15:58:19,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 15:58:19,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 15:58:19,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:58:19,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 15:58:19,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-08-30 15:58:19,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-30 15:58:19,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-30 15:58:19,897 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 424 transitions. [2023-08-30 15:58:19,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2023-08-30 15:58:19,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:58:19,900 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2023-08-30 15:58:19,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2023-08-30 15:58:19,907 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2023-08-30 15:58:19,907 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2023-08-30 15:58:19,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:58:19,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:58:19,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:58:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:58:19,910 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)] === [2023-08-30 15:58:19,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:58:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 17224, now seen corresponding path program 1 times [2023-08-30 15:58:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:58:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308901082] [2023-08-30 15:58:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:58:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:58:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308901082] [2023-08-30 15:58:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308901082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:58:19,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:58:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:58:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487797135] [2023-08-30 15:58:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:58:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:58:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:58:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:58:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:58:19,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 15:58:19,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:58:19,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:58:19,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 15:58:19,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:58:19,996 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-08-30 15:58:19,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:58:19,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 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. [2023-08-30 15:58:19,997 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-08-30 15:58:19,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2023-08-30 15:58:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:58:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:58:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 15:58:19,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002824858757062 [2023-08-30 15:58:19,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 15:58:19,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 15:58:20,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:58:20,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 15:58:20,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-08-30 15:58:20,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-30 15:58:20,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-30 15:58:20,003 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 425 transitions. [2023-08-30 15:58:20,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2023-08-30 15:58:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:58:20,005 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2023-08-30 15:58:20,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=7, PETRI_TRANSITIONS=4} [2023-08-30 15:58:20,006 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-08-30 15:58:20,006 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2023-08-30 15:58:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-30 15:58:20,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:58:20,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:58:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:58:20,007 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)] === [2023-08-30 15:58:20,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:58:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash 535079, now seen corresponding path program 1 times [2023-08-30 15:58:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:58:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877374141] [2023-08-30 15:58:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:58:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:58:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877374141] [2023-08-30 15:58:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877374141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:58:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133669420] [2023-08-30 15:58:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:20,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:58:20,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:58:20,077 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) [2023-08-30 15:58:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:58:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:20,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:58:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:58:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:58:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133669420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:58:20,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:58:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 15:58:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361576146] [2023-08-30 15:58:20,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:58:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:58:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:58:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:58:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:58:20,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 15:58:20,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-08-30 15:58:20,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:58:20,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 15:58:20,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:58:20,289 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-08-30 15:58:20,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:58:20,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 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 19. Up to 7 conditions per place. [2023-08-30 15:58:20,290 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-08-30 15:58:20,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 45 flow [2023-08-30 15:58:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:58:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:58:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 850 transitions. [2023-08-30 15:58:20,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002824858757062 [2023-08-30 15:58:20,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 850 transitions. [2023-08-30 15:58:20,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 850 transitions. [2023-08-30 15:58:20,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:58:20,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 850 transitions. [2023-08-30 15:58:20,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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) [2023-08-30 15:58:20,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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) [2023-08-30 15:58:20,313 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 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) [2023-08-30 15:58:20,314 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 6 states and 850 transitions. [2023-08-30 15:58:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 45 flow [2023-08-30 15:58:20,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 41 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:58:20,315 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-08-30 15:58:20,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, 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} [2023-08-30 15:58:20,316 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-08-30 15:58:20,316 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-08-30 15:58:20,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2023-08-30 15:58:20,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:58:20,317 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:58:20,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:58:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:58:20,522 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)] === [2023-08-30 15:58:20,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:58:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1238203640, now seen corresponding path program 2 times [2023-08-30 15:58:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:58:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444208539] [2023-08-30 15:58:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:58:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:58:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444208539] [2023-08-30 15:58:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444208539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:58:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421171089] [2023-08-30 15:58:20,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:58:20,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:58:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:58:20,673 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) [2023-08-30 15:58:20,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:58:20,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:58:20,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:58:20,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:58:20,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:58:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:58:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:20,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421171089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:58:20,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:58:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:58:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462723971] [2023-08-30 15:58:20,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:58:20,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:58:20,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:58:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:58:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:58:20,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 15:58:20,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 13 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 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) [2023-08-30 15:58:20,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:58:20,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 15:58:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:58:20,948 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 15:58:20,948 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 15:58:20,948 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 52. Up to 13 conditions per place. [2023-08-30 15:58:20,948 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 11 changer transitions 0/13 dead transitions. [2023-08-30 15:58:20,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 113 flow [2023-08-30 15:58:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:58:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:58:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1699 transitions. [2023-08-30 15:58:20,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5999293785310734 [2023-08-30 15:58:20,952 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1699 transitions. [2023-08-30 15:58:20,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1699 transitions. [2023-08-30 15:58:20,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:58:20,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1699 transitions. [2023-08-30 15:58:20,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.58333333333334) internal successors, (1699), 12 states have internal predecessors, (1699), 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) [2023-08-30 15:58:20,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 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) [2023-08-30 15:58:20,976 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 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) [2023-08-30 15:58:20,976 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 12 states and 1699 transitions. [2023-08-30 15:58:20,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 113 flow [2023-08-30 15:58:20,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 99 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:58:20,978 INFO L231 Difference]: Finished difference. Result has 30 places, 13 transitions, 121 flow [2023-08-30 15:58:20,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, 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} [2023-08-30 15:58:20,979 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 26 predicate places. [2023-08-30 15:58:20,979 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 13 transitions, 121 flow [2023-08-30 15:58:20,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 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) [2023-08-30 15:58:20,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:58:20,980 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 15:58:21,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:58:21,201 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 [2023-08-30 15:58:21,202 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)] === [2023-08-30 15:58:21,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:58:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 294772392, now seen corresponding path program 3 times [2023-08-30 15:58:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:58:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425861644] [2023-08-30 15:58:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:58:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:58:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:58:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:58:21,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:58:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425861644] [2023-08-30 15:58:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425861644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:58:21,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524489931] [2023-08-30 15:58:21,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:58:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:58:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:58:21,428 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) [2023-08-30 15:58:21,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:58:21,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 15:58:21,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:58:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:58:21,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:58:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 15:58:21,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:58:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 15:58:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524489931] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:58:21,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:58:21,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-08-30 15:58:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681376676] [2023-08-30 15:58:21,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:58:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:58:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:58:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:58:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:58:21,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 236 [2023-08-30 15:58:21,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 13 transitions, 121 flow. Second operand has 15 states, 15 states have (on average 138.06666666666666) internal successors, (2071), 15 states have internal predecessors, (2071), 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) [2023-08-30 15:58:21,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:58:21,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 236 [2023-08-30 15:58:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:58:21,811 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 15:58:21,812 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 15:58:21,812 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 62. Up to 10 conditions per place. [2023-08-30 15:58:21,812 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-30 15:58:21,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 13 transitions, 133 flow [2023-08-30 15:58:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:58:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:58:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1933 transitions. [2023-08-30 15:58:21,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850484261501211 [2023-08-30 15:58:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1933 transitions. [2023-08-30 15:58:21,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1933 transitions. [2023-08-30 15:58:21,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:58:21,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1933 transitions. [2023-08-30 15:58:21,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.07142857142858) internal successors, (1933), 14 states have internal predecessors, (1933), 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) [2023-08-30 15:58:21,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 236.0) internal successors, (3540), 15 states have internal predecessors, (3540), 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) [2023-08-30 15:58:21,827 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 236.0) internal successors, (3540), 15 states have internal predecessors, (3540), 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) [2023-08-30 15:58:21,827 INFO L175 Difference]: Start difference. First operand has 30 places, 13 transitions, 121 flow. Second operand 14 states and 1933 transitions. [2023-08-30 15:58:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 13 transitions, 133 flow [2023-08-30 15:58:21,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 59 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-08-30 15:58:21,828 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 15:58:21,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, 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} [2023-08-30 15:58:21,829 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 23 predicate places. [2023-08-30 15:58:21,829 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 15:58:21,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 138.06666666666666) internal successors, (2071), 15 states have internal predecessors, (2071), 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) [2023-08-30 15:58:21,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-08-30 15:58:21,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-08-30 15:58:21,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 15:58:21,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 15:58:21,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:58:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:58:22,047 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-30 15:58:22,049 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:58:22,049 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:58:22,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:58:22 BasicIcfg [2023-08-30 15:58:22,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:58:22,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:58:22,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:58:22,052 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:58:22,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:58:15" (3/4) ... [2023-08-30 15:58:22,054 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:58:22,058 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:58:22,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:58:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-30 15:58:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:58:22,063 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:58:22,063 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:58:22,096 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:58:22,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:58:22,097 INFO L158 Benchmark]: Toolchain (without parser) took 7199.52ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 65.3MB in the beginning and 70.5MB in the end (delta: -5.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,098 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 71.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:58:22,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.16ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 54.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.95ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,099 INFO L158 Benchmark]: Boogie Preprocessor took 54.23ms. Allocated memory is still 88.1MB. Free memory was 51.8MB in the beginning and 50.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,099 INFO L158 Benchmark]: RCFGBuilder took 529.72ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 57.2MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,099 INFO L158 Benchmark]: TraceAbstraction took 6265.98ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 73.5MB in the end (delta: -17.1MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,100 INFO L158 Benchmark]: Witness Printer took 44.71ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 70.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:58:22,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 71.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.16ms. Allocated memory is still 88.1MB. Free memory was 65.0MB in the beginning and 54.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.95ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.23ms. Allocated memory is still 88.1MB. Free memory was 51.8MB in the beginning and 50.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.72ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 57.2MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6265.98ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 73.5MB in the end (delta: -17.1MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Witness Printer took 44.71ms. Allocated memory is still 107.0MB. Free memory was 73.5MB in the beginning and 70.5MB 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, 7 FixpointIterations, 59 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 77 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: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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, 194 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: 6.1s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 46 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 3 NumberOfNonLiveVariables, 338 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 90/198 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! [2023-08-30 15:58:22,119 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