./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/clever.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/clever.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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --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 15:00:50,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:00:50,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:00:50,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:00:50,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:00:50,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:00:50,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:00:50,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:00:50,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:00:50,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:00:50,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:00:50,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:00:50,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:00:50,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:00:50,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:00:50,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:00:50,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:00:50,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:00:50,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:00:50,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:00:50,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:00:50,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:00:50,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:00:50,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:00:50,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:00:50,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:00:50,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:00:50,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:00:50,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:00:50,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:00:50,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:00:50,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:00:50,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:00:50,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:00:50,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:00:50,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:00:50,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:00:50,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:00:50,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:00:50,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:00:50,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:00:50,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:00:50,166 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:00:50,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:00:50,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:00:50,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:00:50,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:00:50,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:00:50,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:00:50,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:00:50,169 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:00:50,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:00:50,171 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:00:50,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:00:50,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:00:50,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:00:50,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:00:50,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:00:50,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:00:50,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:00:50,172 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:00:50,172 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:00:50,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:00:50,173 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:00:50,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:00:50,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:00:50,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:00:50,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:00:50,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:00:50,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:00:50,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:00:50,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:00:50,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:00:50,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:00:50,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:00:50,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:00:50,175 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:00:50,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:00:50,176 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:00:50,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:00:50,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:00:50,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:00:50,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:00:50,504 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:00:50,504 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:00:50,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-30 15:00:51,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:00:51,995 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:00:51,996 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-30 15:00:52,002 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30655130a/34014ff2733c4e6bbb05839ae0650834/FLAG0d9010b44 [2023-08-30 15:00:52,016 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30655130a/34014ff2733c4e6bbb05839ae0650834 [2023-08-30 15:00:52,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:00:52,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:00:52,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:00:52,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:00:52,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:00:52,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5071380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52, skipping insertion in model container [2023-08-30 15:00:52,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:00:52,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:00:52,167 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/clever.wvr.c[2133,2146] [2023-08-30 15:00:52,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:00:52,177 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:00:52,194 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/clever.wvr.c[2133,2146] [2023-08-30 15:00:52,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:00:52,208 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:00:52,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52 WrapperNode [2023-08-30 15:00:52,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:00:52,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:00:52,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:00:52,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:00:52,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,251 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-08-30 15:00:52,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:00:52,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:00:52,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:00:52,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:00:52,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,293 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:00:52,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:00:52,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:00:52,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:00:52,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (1/1) ... [2023-08-30 15:00:52,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:00:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:52,343 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 15:00:52,369 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 15:00:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:00:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:00:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:00:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:00:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:00:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:00:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:00:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:00:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:00:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:00:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:00:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:00:52,387 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 15:00:52,494 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:00:52,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:00:52,801 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:00:52,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:00:52,808 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:00:52,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:52 BoogieIcfgContainer [2023-08-30 15:00:52,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:00:52,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:00:52,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:00:52,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:00:52,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:00:52" (1/3) ... [2023-08-30 15:00:52,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56f190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:00:52, skipping insertion in model container [2023-08-30 15:00:52,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:52" (2/3) ... [2023-08-30 15:00:52,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56f190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:00:52, skipping insertion in model container [2023-08-30 15:00:52,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:52" (3/3) ... [2023-08-30 15:00:52,818 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-08-30 15:00:52,824 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:00:52,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:00:52,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 15:00:52,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:00:52,890 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:00:52,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 129 transitions, 274 flow [2023-08-30 15:00:53,007 INFO L130 PetriNetUnfolder]: 9/127 cut-off events. [2023-08-30 15:00:53,008 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:00:53,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-30 15:00:53,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 129 transitions, 274 flow [2023-08-30 15:00:53,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2023-08-30 15:00:53,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:00:53,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 111 transitions, 231 flow [2023-08-30 15:00:53,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 111 transitions, 231 flow [2023-08-30 15:00:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 111 transitions, 231 flow [2023-08-30 15:00:53,085 INFO L130 PetriNetUnfolder]: 8/111 cut-off events. [2023-08-30 15:00:53,085 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:00:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 111 events. 8/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-30 15:00:53,088 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-08-30 15:00:56,342 INFO L134 LiptonReduction]: Checked pairs total: 1171 [2023-08-30 15:00:56,342 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-30 15:00:56,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:00:56,360 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;@2848a5b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:00:56,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-30 15:00:56,363 INFO L130 PetriNetUnfolder]: 2/7 cut-off events. [2023-08-30 15:00:56,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:00:56,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:56,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:00:56,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:56,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 14572462, now seen corresponding path program 1 times [2023-08-30 15:00:56,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561700354] [2023-08-30 15:00:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:56,580 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 15:00:56,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:56,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561700354] [2023-08-30 15:00:56,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561700354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:56,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:00:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425709618] [2023-08-30 15:00:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:56,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:56,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:56,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-08-30 15:00:56,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 15:00:56,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:56,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-08-30 15:00:56,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:56,737 INFO L130 PetriNetUnfolder]: 205/342 cut-off events. [2023-08-30 15:00:56,738 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 15:00:56,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 342 events. 205/342 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1279 event pairs, 57 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 640. Up to 205 conditions per place. [2023-08-30 15:00:56,741 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 15:00:56,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 34 transitions, 151 flow [2023-08-30 15:00:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-30 15:00:56,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313807531380753 [2023-08-30 15:00:56,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-30 15:00:56,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-30 15:00:56,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:56,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-30 15:00:56,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 15:00:56,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:56,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:56,767 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 47 flow. Second operand 3 states and 381 transitions. [2023-08-30 15:00:56,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 34 transitions, 151 flow [2023-08-30 15:00:56,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 34 transitions, 143 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:00:56,772 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2023-08-30 15:00:56,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-08-30 15:00:56,784 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-08-30 15:00:56,784 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2023-08-30 15:00:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 15:00:56,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:56,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:00:56,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:00:56,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:56,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 14572474, now seen corresponding path program 1 times [2023-08-30 15:00:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784260663] [2023-08-30 15:00:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:56,887 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 15:00:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784260663] [2023-08-30 15:00:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784260663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:56,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:00:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475666740] [2023-08-30 15:00:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:56,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-08-30 15:00:56,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 15:00:56,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:56,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-08-30 15:00:56,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:56,996 INFO L130 PetriNetUnfolder]: 317/522 cut-off events. [2023-08-30 15:00:56,996 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 15:00:56,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 522 events. 317/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2187 event pairs, 147 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 400. Up to 343 conditions per place. [2023-08-30 15:00:57,001 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 34 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-30 15:00:57,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 172 flow [2023-08-30 15:00:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-08-30 15:00:57,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271966527196653 [2023-08-30 15:00:57,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-08-30 15:00:57,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-08-30 15:00:57,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:57,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-08-30 15:00:57,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 15:00:57,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:57,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:57,039 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 378 transitions. [2023-08-30 15:00:57,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 172 flow [2023-08-30 15:00:57,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:57,042 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 74 flow [2023-08-30 15:00:57,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-30 15:00:57,043 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-30 15:00:57,044 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 74 flow [2023-08-30 15:00:57,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 15:00:57,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:57,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:00:57,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:00:57,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:57,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash 451777879, now seen corresponding path program 1 times [2023-08-30 15:00:57,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:57,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634055743] [2023-08-30 15:00:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:57,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:57,195 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 15:00:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634055743] [2023-08-30 15:00:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634055743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:57,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:00:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:00:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499780837] [2023-08-30 15:00:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:00:57,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-08-30 15:00:57,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:00:57,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:57,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-08-30 15:00:57,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:57,310 INFO L130 PetriNetUnfolder]: 453/742 cut-off events. [2023-08-30 15:00:57,311 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-30 15:00:57,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 742 events. 453/742 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3346 event pairs, 109 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1404. Up to 483 conditions per place. [2023-08-30 15:00:57,320 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 15:00:57,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 207 flow [2023-08-30 15:00:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-30 15:00:57,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285913528591353 [2023-08-30 15:00:57,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-30 15:00:57,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-30 15:00:57,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:57,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-30 15:00:57,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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 15:00:57,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:57,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:57,326 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 74 flow. Second operand 3 states and 379 transitions. [2023-08-30 15:00:57,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 207 flow [2023-08-30 15:00:57,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:00:57,330 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 84 flow [2023-08-30 15:00:57,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-30 15:00:57,331 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-30 15:00:57,334 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 84 flow [2023-08-30 15:00:57,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:00:57,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:57,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:00:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:00:57,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:57,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 451747400, now seen corresponding path program 1 times [2023-08-30 15:00:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934034976] [2023-08-30 15:00:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:57,425 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 15:00:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:57,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934034976] [2023-08-30 15:00:57,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934034976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:57,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288492136] [2023-08-30 15:00:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:57,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:57,437 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 15:00:57,458 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 15:00:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:00:57,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:57,559 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 15:00:57,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:00:57,582 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 15:00:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288492136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:00:57,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:00:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:00:57,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295305093] [2023-08-30 15:00:57,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:00:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:00:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:00:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:00:57,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-08-30 15:00:57,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 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 15:00:57,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:57,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-08-30 15:00:57,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:57,887 INFO L130 PetriNetUnfolder]: 1017/1594 cut-off events. [2023-08-30 15:00:57,887 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2023-08-30 15:00:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 1594 events. 1017/1594 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7807 event pairs, 187 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 2854. Up to 419 conditions per place. [2023-08-30 15:00:57,897 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 88 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2023-08-30 15:00:57,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 100 transitions, 547 flow [2023-08-30 15:00:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:00:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:00:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2023-08-30 15:00:57,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319784817692768 [2023-08-30 15:00:57,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2023-08-30 15:00:57,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2023-08-30 15:00:57,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:57,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2023-08-30 15:00:57,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 15:00:57,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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 15:00:57,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 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 15:00:57,910 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 84 flow. Second operand 7 states and 890 transitions. [2023-08-30 15:00:57,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 100 transitions, 547 flow [2023-08-30 15:00:57,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 100 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:57,915 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 162 flow [2023-08-30 15:00:57,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-30 15:00:57,918 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-08-30 15:00:57,918 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 162 flow [2023-08-30 15:00:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 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 15:00:57,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:57,919 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 15:00:57,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:00:58,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:58,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:58,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1119268250, now seen corresponding path program 1 times [2023-08-30 15:00:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930275640] [2023-08-30 15:00:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:58,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930275640] [2023-08-30 15:00:58,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930275640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:58,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619467788] [2023-08-30 15:00:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:58,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:58,201 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 15:00:58,215 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 15:00:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:58,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:00:58,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:58,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:00:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619467788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:00:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-30 15:00:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221963429] [2023-08-30 15:00:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:58,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:00:58,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:58,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:00:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:00:58,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-08-30 15:00:58,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 15:00:58,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:58,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-08-30 15:00:58,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:58,482 INFO L130 PetriNetUnfolder]: 893/1442 cut-off events. [2023-08-30 15:00:58,482 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2023-08-30 15:00:58,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 1442 events. 893/1442 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6905 event pairs, 33 based on Foata normal form. 56/1198 useless extension candidates. Maximal degree in co-relation 3604. Up to 822 conditions per place. [2023-08-30 15:00:58,491 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 63 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-08-30 15:00:58,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 70 transitions, 412 flow [2023-08-30 15:00:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:00:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:00:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-08-30 15:00:58,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280334728033472 [2023-08-30 15:00:58,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-08-30 15:00:58,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-08-30 15:00:58,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:58,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-08-30 15:00:58,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:00:58,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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 15:00:58,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 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 15:00:58,499 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 162 flow. Second operand 5 states and 631 transitions. [2023-08-30 15:00:58,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 70 transitions, 412 flow [2023-08-30 15:00:58,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 70 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:58,503 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 143 flow [2023-08-30 15:00:58,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-30 15:00:58,504 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2023-08-30 15:00:58,504 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 143 flow [2023-08-30 15:00:58,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 15:00:58,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:58,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:00:58,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:00:58,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:58,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:58,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1120212763, now seen corresponding path program 1 times [2023-08-30 15:00:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64283486] [2023-08-30 15:00:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:58,788 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 15:00:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64283486] [2023-08-30 15:00:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64283486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541964518] [2023-08-30 15:00:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:58,793 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 15:00:58,816 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 15:00:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:58,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:00:58,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:00:58,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:00:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541964518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:58,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:00:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2023-08-30 15:00:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97049657] [2023-08-30 15:00:58,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:00:58,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 239 [2023-08-30 15:00:58,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 15:00:58,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:58,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 239 [2023-08-30 15:00:58,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:58,995 INFO L130 PetriNetUnfolder]: 759/1228 cut-off events. [2023-08-30 15:00:58,995 INFO L131 PetriNetUnfolder]: For 865/865 co-relation queries the response was YES. [2023-08-30 15:00:58,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 1228 events. 759/1228 cut-off events. For 865/865 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5659 event pairs, 547 based on Foata normal form. 0/1028 useless extension candidates. Maximal degree in co-relation 2003. Up to 1228 conditions per place. [2023-08-30 15:00:59,004 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 15:00:59,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 195 flow [2023-08-30 15:00:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-30 15:00:59,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104602510460251 [2023-08-30 15:00:59,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-30 15:00:59,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-30 15:00:59,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:59,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-30 15:00:59,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 15:00:59,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:59,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:59,009 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 143 flow. Second operand 3 states and 366 transitions. [2023-08-30 15:00:59,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 195 flow [2023-08-30 15:00:59,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:00:59,014 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 132 flow [2023-08-30 15:00:59,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-30 15:00:59,016 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-08-30 15:00:59,016 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 132 flow [2023-08-30 15:00:59,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 15:00:59,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:59,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 15:00:59,027 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 15:00:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:59,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:59,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1119269509, now seen corresponding path program 1 times [2023-08-30 15:00:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:59,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292080026] [2023-08-30 15:00:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:59,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292080026] [2023-08-30 15:00:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292080026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336157900] [2023-08-30 15:00:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:59,267 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) [2023-08-30 15:00:59,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:00:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:59,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:00:59,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:59,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:00:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336157900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:00:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:00:59,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 15:00:59,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128872362] [2023-08-30 15:00:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:00:59,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:00:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:59,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:00:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:00:59,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-08-30 15:00:59,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 15:00:59,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:59,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-08-30 15:00:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:00:59,428 INFO L130 PetriNetUnfolder]: 674/1083 cut-off events. [2023-08-30 15:00:59,428 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2023-08-30 15:00:59,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1083 events. 674/1083 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4778 event pairs, 472 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 3081. Up to 1083 conditions per place. [2023-08-30 15:00:59,434 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 15:00:59,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 182 flow [2023-08-30 15:00:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:00:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:00:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-30 15:00:59,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504881450488145 [2023-08-30 15:00:59,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-30 15:00:59,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-30 15:00:59,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:00:59,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-30 15:00:59,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 15:00:59,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:59,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:00:59,440 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 132 flow. Second operand 3 states and 362 transitions. [2023-08-30 15:00:59,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 182 flow [2023-08-30 15:00:59,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:00:59,443 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 129 flow [2023-08-30 15:00:59,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-30 15:00:59,444 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-08-30 15:00:59,444 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 129 flow [2023-08-30 15:00:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 15:00:59,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:00:59,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 15:00:59,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:00:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:59,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:00:59,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:00:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1119269508, now seen corresponding path program 1 times [2023-08-30 15:00:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:00:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373127165] [2023-08-30 15:00:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:00:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:00:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:00:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373127165] [2023-08-30 15:00:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373127165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:00:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247417713] [2023-08-30 15:00:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:00:59,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:00:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:00:59,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:00:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:00:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:00:59,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:00:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:00:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:00:59,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:00:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:00:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247417713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:00:59,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:00:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 15:00:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176768444] [2023-08-30 15:00:59,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:00:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:00:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:00:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:00:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:00:59,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 239 [2023-08-30 15:00:59,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 15:00:59,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:00:59,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 239 [2023-08-30 15:00:59,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:00,030 INFO L130 PetriNetUnfolder]: 1191/1952 cut-off events. [2023-08-30 15:01:00,031 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-08-30 15:01:00,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 1952 events. 1191/1952 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9787 event pairs, 117 based on Foata normal form. 0/1820 useless extension candidates. Maximal degree in co-relation 5419. Up to 684 conditions per place. [2023-08-30 15:01:00,044 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 70 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2023-08-30 15:01:00,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 514 flow [2023-08-30 15:01:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:01:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:01:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 719 transitions. [2023-08-30 15:01:00,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50139470013947 [2023-08-30 15:01:00,047 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 719 transitions. [2023-08-30 15:01:00,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 719 transitions. [2023-08-30 15:01:00,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:00,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 719 transitions. [2023-08-30 15:01:00,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 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 15:01:00,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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 15:01:00,052 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 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 15:01:00,052 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 129 flow. Second operand 6 states and 719 transitions. [2023-08-30 15:01:00,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 514 flow [2023-08-30 15:01:00,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 79 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:01:00,058 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 192 flow [2023-08-30 15:01:00,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-30 15:01:00,061 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2023-08-30 15:01:00,061 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 192 flow [2023-08-30 15:01:00,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 15:01:00,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:01:00,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:01:00,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:01:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:00,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:01:00,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:01:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1120212761, now seen corresponding path program 1 times [2023-08-30 15:01:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:01:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245733166] [2023-08-30 15:01:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:01:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:00,330 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 15:01:00,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:01:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245733166] [2023-08-30 15:01:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245733166] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:01:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641525878] [2023-08-30 15:01:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:01:00,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:01:00,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:01:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:01:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:01:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:01:00,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:01:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641525878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:01:00,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:01:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 15:01:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282705435] [2023-08-30 15:01:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:01:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:01:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:01:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:01:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:01:00,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-08-30 15:01:00,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 15:01:00,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:01:00,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-08-30 15:01:00,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:00,536 INFO L130 PetriNetUnfolder]: 979/1608 cut-off events. [2023-08-30 15:01:00,536 INFO L131 PetriNetUnfolder]: For 1460/1460 co-relation queries the response was YES. [2023-08-30 15:01:00,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 1608 events. 979/1608 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7939 event pairs, 687 based on Foata normal form. 0/1608 useless extension candidates. Maximal degree in co-relation 4779. Up to 1608 conditions per place. [2023-08-30 15:01:00,546 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 27 selfloop transitions, 1 changer transitions 3/31 dead transitions. [2023-08-30 15:01:00,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 250 flow [2023-08-30 15:01:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:01:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:01:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-30 15:01:00,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502092050209205 [2023-08-30 15:01:00,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-30 15:01:00,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-30 15:01:00,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:00,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-30 15:01:00,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 15:01:00,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:01:00,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:01:00,553 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 192 flow. Second operand 3 states and 360 transitions. [2023-08-30 15:01:00,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 250 flow [2023-08-30 15:01:00,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 241 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 15:01:00,573 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 174 flow [2023-08-30 15:01:00,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 15:01:00,574 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 14 predicate places. [2023-08-30 15:01:00,574 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 174 flow [2023-08-30 15:01:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 15:01:00,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:01:00,574 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:01:00,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:01:00,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:00,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 15:01:00,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:01:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1874986873, now seen corresponding path program 2 times [2023-08-30 15:01:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:01:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634575094] [2023-08-30 15:01:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:01:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:01:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:01:00,841 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 15:01:00,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:01:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634575094] [2023-08-30 15:01:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634575094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:01:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288228997] [2023-08-30 15:01:00,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:01:00,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:01:00,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:01:00,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:01:00,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:01:00,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:01:00,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:01:00,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:01:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:01:00,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:01:00,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288228997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:01:00,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:01:00,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 15:01:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473608368] [2023-08-30 15:01:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:01:00,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:01:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:01:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:01:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:01:00,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 239 [2023-08-30 15:01:00,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 15:01:00,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:01:00,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 239 [2023-08-30 15:01:00,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:01:00,980 INFO L130 PetriNetUnfolder]: 585/896 cut-off events. [2023-08-30 15:01:00,980 INFO L131 PetriNetUnfolder]: For 1084/1084 co-relation queries the response was YES. [2023-08-30 15:01:00,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 896 events. 585/896 cut-off events. For 1084/1084 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3447 event pairs, 363 based on Foata normal form. 30/926 useless extension candidates. Maximal degree in co-relation 2907. Up to 896 conditions per place. [2023-08-30 15:01:00,983 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-30 15:01:00,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 218 flow [2023-08-30 15:01:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:01:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:01:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-30 15:01:00,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500697350069735 [2023-08-30 15:01:00,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-30 15:01:00,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-30 15:01:00,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:01:00,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-30 15:01:00,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 15:01:00,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:01:00,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 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 15:01:00,988 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 174 flow. Second operand 3 states and 359 transitions. [2023-08-30 15:01:00,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 218 flow [2023-08-30 15:01:00,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 193 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:01:00,993 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-30 15:01:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-30 15:01:00,994 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-30 15:01:00,994 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-30 15:01:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 15:01:00,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-30 15:01:00,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-30 15:01:00,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-30 15:01:00,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-30 15:01:00,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-30 15:01:00,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-30 15:01:00,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-30 15:01:00,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-30 15:01:01,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:01:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:01:01,204 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:01:01,209 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:01:01,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:01:01,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:01:01 BasicIcfg [2023-08-30 15:01:01,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:01:01,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:01:01,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:01:01,212 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:01:01,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:52" (3/4) ... [2023-08-30 15:01:01,214 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:01:01,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:01:01,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:01:01,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 15:01:01,224 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:01:01,224 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:01:01,224 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:01:01,251 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:01:01,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:01:01,251 INFO L158 Benchmark]: Toolchain (without parser) took 9232.16ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 70.8MB in the beginning and 42.9MB in the end (delta: 27.8MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,252 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 67.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:01:01,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.46ms. Allocated memory is still 92.3MB. Free memory was 70.5MB in the beginning and 59.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.64ms. Allocated memory is still 92.3MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,252 INFO L158 Benchmark]: Boogie Preprocessor took 49.74ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:01:01,252 INFO L158 Benchmark]: RCFGBuilder took 507.48ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 69.1MB in the end (delta: -12.7MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,253 INFO L158 Benchmark]: TraceAbstraction took 8398.94ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 68.6MB in the beginning and 45.0MB in the end (delta: 23.6MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,253 INFO L158 Benchmark]: Witness Printer took 38.90ms. Allocated memory is still 134.2MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:01:01,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 67.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.46ms. Allocated memory is still 92.3MB. Free memory was 70.5MB in the beginning and 59.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.64ms. Allocated memory is still 92.3MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.74ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 507.48ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 69.1MB in the end (delta: -12.7MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8398.94ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 68.6MB in the beginning and 45.0MB in the end (delta: 23.6MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. * Witness Printer took 38.90ms. Allocated memory is still 134.2MB. Free memory was 45.0MB in the beginning and 42.9MB in the end (delta: 2.1MB). 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: 3.3s, 110 PlacesBefore, 23 PlacesAfterwards, 111 TransitionsBefore, 19 TransitionsAfterwards, 1300 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 110 TotalNumberOfCompositions, 1171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1171, independent: 1171, independent conditional: 0, independent unconditional: 1171, 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: 665, independent: 665, independent conditional: 0, independent unconditional: 665, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1171, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 665, unknown conditional: 0, unknown unconditional: 665] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, 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: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 158 locations, 14 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: 8.3s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 393 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 14 mSDtfsCounter, 650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=8, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 99 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 2 NumberOfNonLiveVariables, 594 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 20/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:01:01,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE