./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:21:24,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:21:24,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:21:24,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:21:24,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:21:24,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:21:24,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:21:24,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:21:24,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:21:24,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:21:24,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:21:24,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:21:24,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:21:24,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:21:24,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:21:24,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:21:24,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:21:24,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:21:24,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:21:24,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:21:24,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:21:24,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:21:24,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:21:24,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:21:24,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:21:24,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:21:24,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:21:24,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:21:24,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:21:24,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:21:24,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:21:24,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:21:24,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:21:24,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:21:24,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:21:24,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:21:24,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:21:24,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:21:24,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:21:24,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:21:24,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:21:24,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:21:24,219 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:21:24,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:21:24,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:21:24,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:21:24,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:21:24,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:21:24,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:21:24,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:21:24,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:21:24,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:21:24,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:24,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:21:24,223 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:21:24,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:21:24,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:21:24,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:21:24,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:21:24,527 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:21:24,527 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:21:24,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 07:21:25,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:21:25,987 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:21:25,988 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 07:21:26,014 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2659e9a/e4e18a53bc7644c0b587bc1c4a466ced/FLAGee4d1a518 [2023-09-01 07:21:26,025 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2659e9a/e4e18a53bc7644c0b587bc1c4a466ced [2023-09-01 07:21:26,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:21:26,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:21:26,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:26,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:21:26,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:21:26,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d0f7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26, skipping insertion in model container [2023-09-01 07:21:26,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:21:26,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:21:26,175 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 07:21:26,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:26,202 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:21:26,238 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 07:21:26,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:26,263 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:21:26,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26 WrapperNode [2023-09-01 07:21:26,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:26,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:26,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:21:26,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:21:26,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,326 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 188 [2023-09-01 07:21:26,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:26,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:21:26,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:21:26,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:21:26,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:21:26,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:21:26,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:21:26,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:21:26,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (1/1) ... [2023-09-01 07:21:26,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:26,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:26,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:21:26,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:21:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:21:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:21:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:21:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:21:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:21:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:21:26,475 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:21:26,574 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:21:26,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:21:26,897 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:21:26,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:21:26,906 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:21:26,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:26 BoogieIcfgContainer [2023-09-01 07:21:26,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:21:26,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:21:26,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:21:26,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:21:26,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:21:26" (1/3) ... [2023-09-01 07:21:26,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfa9345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:26, skipping insertion in model container [2023-09-01 07:21:26,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:26" (2/3) ... [2023-09-01 07:21:26,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfa9345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:26, skipping insertion in model container [2023-09-01 07:21:26,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:26" (3/3) ... [2023-09-01 07:21:26,923 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-09-01 07:21:26,930 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:21:26,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:21:26,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 07:21:26,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:21:27,077 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:21:27,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 217 transitions, 450 flow [2023-09-01 07:21:27,218 INFO L130 PetriNetUnfolder]: 19/215 cut-off events. [2023-09-01 07:21:27,219 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:21:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-09-01 07:21:27,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 217 transitions, 450 flow [2023-09-01 07:21:27,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 200 transitions, 412 flow [2023-09-01 07:21:27,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:21:27,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 200 transitions, 412 flow [2023-09-01 07:21:27,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 200 transitions, 412 flow [2023-09-01 07:21:27,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 200 transitions, 412 flow [2023-09-01 07:21:27,286 INFO L130 PetriNetUnfolder]: 18/200 cut-off events. [2023-09-01 07:21:27,287 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:21:27,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-09-01 07:21:27,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2023-09-01 07:21:32,305 INFO L134 LiptonReduction]: Checked pairs total: 4814 [2023-09-01 07:21:32,305 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-09-01 07:21:32,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:21:32,329 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;@3a7467be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:21:32,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-09-01 07:21:32,332 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:21:32,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:21:32,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:32,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:21:32,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:32,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 27179, now seen corresponding path program 1 times [2023-09-01 07:21:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791498447] [2023-09-01 07:21:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791498447] [2023-09-01 07:21:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791498447] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:32,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:32,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:21:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087560723] [2023-09-01 07:21:32,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:32,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-09-01 07:21:32,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:32,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:32,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-09-01 07:21:32,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:32,831 INFO L130 PetriNetUnfolder]: 285/489 cut-off events. [2023-09-01 07:21:32,831 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 07:21:32,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 489 events. 285/489 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1823 event pairs, 186 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 446. Up to 242 conditions per place. [2023-09-01 07:21:32,836 INFO L137 encePairwiseOnDemand]: 436/445 looper letters, 55 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-09-01 07:21:32,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 262 flow [2023-09-01 07:21:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-09-01 07:21:32,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868913857677903 [2023-09-01 07:21:32,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-09-01 07:21:32,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-09-01 07:21:32,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:32,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-09-01 07:21:32,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:32,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:32,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:32,861 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 650 transitions. [2023-09-01 07:21:32,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 262 flow [2023-09-01 07:21:32,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:21:32,866 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 106 flow [2023-09-01 07:21:32,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-09-01 07:21:32,869 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-09-01 07:21:32,870 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 106 flow [2023-09-01 07:21:32,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:32,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:32,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:21:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:21:32,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:32,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 844243, now seen corresponding path program 1 times [2023-09-01 07:21:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104592921] [2023-09-01 07:21:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:32,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:32,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104592921] [2023-09-01 07:21:32,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104592921] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:32,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818420995] [2023-09-01 07:21:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:32,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:32,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:32,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:21:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:33,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:21:33,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:33,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818420995] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:33,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:21:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417230609] [2023-09-01 07:21:33,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:21:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:21:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:21:33,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-09-01 07:21:33,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:33,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-09-01 07:21:33,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:33,358 INFO L130 PetriNetUnfolder]: 717/1221 cut-off events. [2023-09-01 07:21:33,358 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 07:21:33,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1221 events. 717/1221 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5591 event pairs, 465 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 1951. Up to 240 conditions per place. [2023-09-01 07:21:33,365 INFO L137 encePairwiseOnDemand]: 437/445 looper letters, 125 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-09-01 07:21:33,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 147 transitions, 672 flow [2023-09-01 07:21:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1517 transitions. [2023-09-01 07:21:33,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869983948635634 [2023-09-01 07:21:33,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1517 transitions. [2023-09-01 07:21:33,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1517 transitions. [2023-09-01 07:21:33,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:33,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1517 transitions. [2023-09-01 07:21:33,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 216.71428571428572) internal successors, (1517), 7 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,376 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,377 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 106 flow. Second operand 7 states and 1517 transitions. [2023-09-01 07:21:33,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 147 transitions, 672 flow [2023-09-01 07:21:33,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 147 transitions, 658 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:33,379 INFO L231 Difference]: Finished difference. Result has 41 places, 51 transitions, 237 flow [2023-09-01 07:21:33,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=41, PETRI_TRANSITIONS=51} [2023-09-01 07:21:33,380 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-09-01 07:21:33,380 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 51 transitions, 237 flow [2023-09-01 07:21:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:33,381 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:21:33,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:21:33,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:33,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:33,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 26172331, now seen corresponding path program 1 times [2023-09-01 07:21:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762247728] [2023-09-01 07:21:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762247728] [2023-09-01 07:21:33,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762247728] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624036833] [2023-09-01 07:21:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:33,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:33,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:33,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:21:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:33,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:33,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624036833] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:33,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:33,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:21:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218770747] [2023-09-01 07:21:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:33,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:21:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:21:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:21:33,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 445 [2023-09-01 07:21:33,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 51 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:33,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:33,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 445 [2023-09-01 07:21:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:34,081 INFO L130 PetriNetUnfolder]: 711/1213 cut-off events. [2023-09-01 07:21:34,082 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 07:21:34,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1213 events. 711/1213 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5758 event pairs, 465 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 1478. Up to 709 conditions per place. [2023-09-01 07:21:34,088 INFO L137 encePairwiseOnDemand]: 439/445 looper letters, 81 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2023-09-01 07:21:34,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 91 transitions, 467 flow [2023-09-01 07:21:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:21:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:21:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1063 transitions. [2023-09-01 07:21:34,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47775280898876404 [2023-09-01 07:21:34,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1063 transitions. [2023-09-01 07:21:34,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1063 transitions. [2023-09-01 07:21:34,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:34,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1063 transitions. [2023-09-01 07:21:34,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,101 INFO L175 Difference]: Start difference. First operand has 41 places, 51 transitions, 237 flow. Second operand 5 states and 1063 transitions. [2023-09-01 07:21:34,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 91 transitions, 467 flow [2023-09-01 07:21:34,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 448 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:34,104 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 182 flow [2023-09-01 07:21:34,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-09-01 07:21:34,105 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-09-01 07:21:34,105 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 182 flow [2023-09-01 07:21:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:34,106 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:21:34,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 07:21:34,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:34,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -618140345, now seen corresponding path program 2 times [2023-09-01 07:21:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439865040] [2023-09-01 07:21:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:34,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439865040] [2023-09-01 07:21:34,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439865040] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:34,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724119282] [2023-09-01 07:21:34,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:34,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:34,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:21:34,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:21:34,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:34,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:34,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:21:34,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:34,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724119282] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:34,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:34,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:21:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678660279] [2023-09-01 07:21:34,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:21:34,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-09-01 07:21:34,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:34,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-09-01 07:21:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:34,734 INFO L130 PetriNetUnfolder]: 711/1211 cut-off events. [2023-09-01 07:21:34,734 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 07:21:34,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1211 events. 711/1211 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5761 event pairs, 465 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 1937. Up to 1181 conditions per place. [2023-09-01 07:21:34,742 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 07:21:34,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 242 flow [2023-09-01 07:21:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-09-01 07:21:34,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-09-01 07:21:34,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-09-01 07:21:34,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-09-01 07:21:34,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:34,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-09-01 07:21:34,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,748 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 182 flow. Second operand 3 states and 621 transitions. [2023-09-01 07:21:34,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 242 flow [2023-09-01 07:21:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 203 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 07:21:34,752 INFO L231 Difference]: Finished difference. Result has 34 places, 41 transitions, 125 flow [2023-09-01 07:21:34,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=34, PETRI_TRANSITIONS=41} [2023-09-01 07:21:34,754 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-09-01 07:21:34,754 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 41 transitions, 125 flow [2023-09-01 07:21:34,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:34,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:34,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:34,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 07:21:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:34,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:34,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1465035838, now seen corresponding path program 1 times [2023-09-01 07:21:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549241702] [2023-09-01 07:21:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:35,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549241702] [2023-09-01 07:21:35,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549241702] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:35,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:35,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:35,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990594166] [2023-09-01 07:21:35,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:35,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:35,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-09-01 07:21:35,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:35,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-09-01 07:21:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:35,207 INFO L130 PetriNetUnfolder]: 1011/1706 cut-off events. [2023-09-01 07:21:35,208 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 07:21:35,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1706 events. 1011/1706 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8797 event pairs, 465 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 3442. Up to 1182 conditions per place. [2023-09-01 07:21:35,215 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 56 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-09-01 07:21:35,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 279 flow [2023-09-01 07:21:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-09-01 07:21:35,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48239700374531835 [2023-09-01 07:21:35,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-09-01 07:21:35,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-09-01 07:21:35,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:35,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-09-01 07:21:35,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,220 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 125 flow. Second operand 3 states and 644 transitions. [2023-09-01 07:21:35,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 279 flow [2023-09-01 07:21:35,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:35,222 INFO L231 Difference]: Finished difference. Result has 36 places, 42 transitions, 136 flow [2023-09-01 07:21:35,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=42} [2023-09-01 07:21:35,224 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-09-01 07:21:35,224 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 42 transitions, 136 flow [2023-09-01 07:21:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:35,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:35,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:21:35,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:35,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1464340604, now seen corresponding path program 1 times [2023-09-01 07:21:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:35,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145184442] [2023-09-01 07:21:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:35,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145184442] [2023-09-01 07:21:35,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145184442] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:35,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:35,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:35,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705704920] [2023-09-01 07:21:35,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:35,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:35,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:35,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 445 [2023-09-01 07:21:35,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:35,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 445 [2023-09-01 07:21:35,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:35,460 INFO L130 PetriNetUnfolder]: 809/1367 cut-off events. [2023-09-01 07:21:35,460 INFO L131 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2023-09-01 07:21:35,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 1367 events. 809/1367 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6583 event pairs, 564 based on Foata normal form. 1/991 useless extension candidates. Maximal degree in co-relation 3120. Up to 1339 conditions per place. [2023-09-01 07:21:35,466 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 33 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-09-01 07:21:35,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 212 flow [2023-09-01 07:21:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-09-01 07:21:35,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45767790262172287 [2023-09-01 07:21:35,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-09-01 07:21:35,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-09-01 07:21:35,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-09-01 07:21:35,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,509 INFO L175 Difference]: Start difference. First operand has 36 places, 42 transitions, 136 flow. Second operand 3 states and 611 transitions. [2023-09-01 07:21:35,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 212 flow [2023-09-01 07:21:35,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:35,512 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 153 flow [2023-09-01 07:21:35,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-09-01 07:21:35,514 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-09-01 07:21:35,515 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 153 flow [2023-09-01 07:21:35,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:35,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:21:35,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:35,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1293207381, now seen corresponding path program 1 times [2023-09-01 07:21:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:35,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967896032] [2023-09-01 07:21:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:21:35,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:35,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967896032] [2023-09-01 07:21:35,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967896032] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:35,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:35,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866817373] [2023-09-01 07:21:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:35,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:35,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 445 [2023-09-01 07:21:35,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:35,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 445 [2023-09-01 07:21:35,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:35,754 INFO L130 PetriNetUnfolder]: 961/1703 cut-off events. [2023-09-01 07:21:35,754 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-09-01 07:21:35,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 1703 events. 961/1703 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9226 event pairs, 564 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 3836. Up to 1288 conditions per place. [2023-09-01 07:21:35,761 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 53 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 07:21:35,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 300 flow [2023-09-01 07:21:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-09-01 07:21:35,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779026217228464 [2023-09-01 07:21:35,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-09-01 07:21:35,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-09-01 07:21:35,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:35,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-09-01 07:21:35,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,766 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 153 flow. Second operand 3 states and 638 transitions. [2023-09-01 07:21:35,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 300 flow [2023-09-01 07:21:35,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:35,768 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 148 flow [2023-09-01 07:21:35,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-09-01 07:21:35,768 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-09-01 07:21:35,768 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 148 flow [2023-09-01 07:21:35,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:35,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:35,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:21:35,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:35,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1413171765, now seen corresponding path program 1 times [2023-09-01 07:21:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926374840] [2023-09-01 07:21:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:21:35,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926374840] [2023-09-01 07:21:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926374840] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533853532] [2023-09-01 07:21:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:35,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:35,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:21:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:35,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:21:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:21:35,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:21:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533853532] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:35,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:35,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-09-01 07:21:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186093068] [2023-09-01 07:21:35,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:21:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:21:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:21:36,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 445 [2023-09-01 07:21:36,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 148 flow. Second operand has 8 states, 8 states have (on average 191.125) internal successors, (1529), 8 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:36,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 445 [2023-09-01 07:21:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:36,149 INFO L130 PetriNetUnfolder]: 241/434 cut-off events. [2023-09-01 07:21:36,150 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-09-01 07:21:36,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 434 events. 241/434 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1608 event pairs, 187 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 1039. Up to 421 conditions per place. [2023-09-01 07:21:36,153 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 27 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-09-01 07:21:36,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 205 flow [2023-09-01 07:21:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:21:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:21:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2023-09-01 07:21:36,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404494382022472 [2023-09-01 07:21:36,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2023-09-01 07:21:36,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2023-09-01 07:21:36,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:36,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2023-09-01 07:21:36,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,162 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 148 flow. Second operand 6 states and 1176 transitions. [2023-09-01 07:21:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 205 flow [2023-09-01 07:21:36,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:36,164 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 168 flow [2023-09-01 07:21:36,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-09-01 07:21:36,165 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-09-01 07:21:36,165 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 168 flow [2023-09-01 07:21:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.125) internal successors, (1529), 8 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:36,166 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:36,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:36,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:36,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -240103931, now seen corresponding path program 2 times [2023-09-01 07:21:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449164623] [2023-09-01 07:21:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 07:21:36,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449164623] [2023-09-01 07:21:36,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449164623] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439140772] [2023-09-01 07:21:36,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:36,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:36,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:36,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:21:36,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:21:36,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:36,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:21:36,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 07:21:36,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 07:21:36,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439140772] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:36,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:36,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 07:21:36,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266515898] [2023-09-01 07:21:36,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:36,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:21:36,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:36,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:21:36,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:21:36,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 445 [2023-09-01 07:21:36,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 168 flow. Second operand has 17 states, 17 states have (on average 190.52941176470588) internal successors, (3239), 17 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:36,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:36,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 445 [2023-09-01 07:21:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:37,039 INFO L130 PetriNetUnfolder]: 241/436 cut-off events. [2023-09-01 07:21:37,039 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-09-01 07:21:37,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 436 events. 241/436 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1620 event pairs, 187 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1063. Up to 421 conditions per place. [2023-09-01 07:21:37,041 INFO L137 encePairwiseOnDemand]: 440/445 looper letters, 27 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-09-01 07:21:37,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 254 flow [2023-09-01 07:21:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:21:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:21:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1363 transitions. [2023-09-01 07:21:37,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375601926163724 [2023-09-01 07:21:37,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1363 transitions. [2023-09-01 07:21:37,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1363 transitions. [2023-09-01 07:21:37,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:37,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1363 transitions. [2023-09-01 07:21:37,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 194.71428571428572) internal successors, (1363), 7 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,052 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,052 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 168 flow. Second operand 7 states and 1363 transitions. [2023-09-01 07:21:37,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 254 flow [2023-09-01 07:21:37,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 234 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:21:37,054 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 190 flow [2023-09-01 07:21:37,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-09-01 07:21:37,055 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-09-01 07:21:37,055 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 190 flow [2023-09-01 07:21:37,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 190.52941176470588) internal successors, (3239), 17 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:37,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:37,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:37,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:37,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash -939616203, now seen corresponding path program 3 times [2023-09-01 07:21:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088807627] [2023-09-01 07:21:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:37,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088807627] [2023-09-01 07:21:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088807627] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518544360] [2023-09-01 07:21:37,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:21:37,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:37,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:21:37,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:21:37,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 07:21:37,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:37,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:21:37,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:37,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:37,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518544360] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:37,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:37,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:21:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532080299] [2023-09-01 07:21:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:21:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:21:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:21:37,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-09-01 07:21:37,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:37,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-09-01 07:21:37,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:37,553 INFO L130 PetriNetUnfolder]: 205/374 cut-off events. [2023-09-01 07:21:37,553 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 07:21:37,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 374 events. 205/374 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1415 event pairs, 27 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 916. Up to 150 conditions per place. [2023-09-01 07:21:37,555 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 66 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-09-01 07:21:37,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 401 flow [2023-09-01 07:21:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:21:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:21:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-09-01 07:21:37,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803370786516854 [2023-09-01 07:21:37,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-09-01 07:21:37,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-09-01 07:21:37,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:37,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-09-01 07:21:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,562 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,562 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 190 flow. Second operand 4 states and 855 transitions. [2023-09-01 07:21:37,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 401 flow [2023-09-01 07:21:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 381 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 07:21:37,564 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 170 flow [2023-09-01 07:21:37,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-09-01 07:21:37,565 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-09-01 07:21:37,565 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 170 flow [2023-09-01 07:21:37,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:37,566 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:37,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:21:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:37,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:37,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1598860432, now seen corresponding path program 1 times [2023-09-01 07:21:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173933043] [2023-09-01 07:21:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173933043] [2023-09-01 07:21:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173933043] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303275176] [2023-09-01 07:21:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:37,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:37,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-09-01 07:21:37,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:37,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-09-01 07:21:37,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:37,943 INFO L130 PetriNetUnfolder]: 356/661 cut-off events. [2023-09-01 07:21:37,943 INFO L131 PetriNetUnfolder]: For 289/289 co-relation queries the response was YES. [2023-09-01 07:21:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 661 events. 356/661 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2736 event pairs, 155 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1630. Up to 371 conditions per place. [2023-09-01 07:21:37,946 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 55 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-09-01 07:21:37,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 339 flow [2023-09-01 07:21:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-09-01 07:21:37,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48239700374531835 [2023-09-01 07:21:37,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-09-01 07:21:37,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-09-01 07:21:37,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:37,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-09-01 07:21:37,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,952 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 170 flow. Second operand 3 states and 644 transitions. [2023-09-01 07:21:37,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 339 flow [2023-09-01 07:21:37,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:37,957 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 183 flow [2023-09-01 07:21:37,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-09-01 07:21:37,958 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-09-01 07:21:37,958 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 183 flow [2023-09-01 07:21:37,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:37,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:37,958 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:37,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:21:37,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:37,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash 944892518, now seen corresponding path program 1 times [2023-09-01 07:21:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950626895] [2023-09-01 07:21:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:37,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950626895] [2023-09-01 07:21:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950626895] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:38,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:38,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842565620] [2023-09-01 07:21:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:21:38,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:21:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:21:38,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-09-01 07:21:38,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:38,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-09-01 07:21:38,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:38,239 INFO L130 PetriNetUnfolder]: 356/643 cut-off events. [2023-09-01 07:21:38,239 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-09-01 07:21:38,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 643 events. 356/643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2599 event pairs, 162 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 1634. Up to 411 conditions per place. [2023-09-01 07:21:38,242 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 49 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-09-01 07:21:38,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 336 flow [2023-09-01 07:21:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:21:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:21:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 828 transitions. [2023-09-01 07:21:38,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-09-01 07:21:38,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 828 transitions. [2023-09-01 07:21:38,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 828 transitions. [2023-09-01 07:21:38,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:38,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 828 transitions. [2023-09-01 07:21:38,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,248 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,248 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 183 flow. Second operand 4 states and 828 transitions. [2023-09-01 07:21:38,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 336 flow [2023-09-01 07:21:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:38,250 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 185 flow [2023-09-01 07:21:38,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-09-01 07:21:38,251 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-09-01 07:21:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 185 flow [2023-09-01 07:21:38,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:38,252 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:38,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:21:38,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:38,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1090762758, now seen corresponding path program 1 times [2023-09-01 07:21:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:38,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731647845] [2023-09-01 07:21:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:38,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731647845] [2023-09-01 07:21:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731647845] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:38,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18158284] [2023-09-01 07:21:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:21:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:21:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:21:38,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 445 [2023-09-01 07:21:38,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:38,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 445 [2023-09-01 07:21:38,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:38,499 INFO L130 PetriNetUnfolder]: 356/635 cut-off events. [2023-09-01 07:21:38,499 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-09-01 07:21:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 635 events. 356/635 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2544 event pairs, 162 based on Foata normal form. 8/593 useless extension candidates. Maximal degree in co-relation 1690. Up to 403 conditions per place. [2023-09-01 07:21:38,502 INFO L137 encePairwiseOnDemand]: 442/445 looper letters, 38 selfloop transitions, 2 changer transitions 11/52 dead transitions. [2023-09-01 07:21:38,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 332 flow [2023-09-01 07:21:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:21:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:21:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 827 transitions. [2023-09-01 07:21:38,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646067415730337 [2023-09-01 07:21:38,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 827 transitions. [2023-09-01 07:21:38,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 827 transitions. [2023-09-01 07:21:38,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:38,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 827 transitions. [2023-09-01 07:21:38,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,509 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 185 flow. Second operand 4 states and 827 transitions. [2023-09-01 07:21:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 332 flow [2023-09-01 07:21:38,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:21:38,511 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 166 flow [2023-09-01 07:21:38,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-09-01 07:21:38,511 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-09-01 07:21:38,511 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 166 flow [2023-09-01 07:21:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:38,512 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:21:38,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:38,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -345542565, now seen corresponding path program 1 times [2023-09-01 07:21:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714946891] [2023-09-01 07:21:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-09-01 07:21:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714946891] [2023-09-01 07:21:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714946891] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:38,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580417689] [2023-09-01 07:21:38,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:38,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:38,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 445 [2023-09-01 07:21:38,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:38,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 445 [2023-09-01 07:21:38,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:38,626 INFO L130 PetriNetUnfolder]: 173/330 cut-off events. [2023-09-01 07:21:38,626 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-09-01 07:21:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 330 events. 173/330 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1098 event pairs, 19 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 923. Up to 232 conditions per place. [2023-09-01 07:21:38,628 INFO L137 encePairwiseOnDemand]: 441/445 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-09-01 07:21:38,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 263 flow [2023-09-01 07:21:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-09-01 07:21:38,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441947565543074 [2023-09-01 07:21:38,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-09-01 07:21:38,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-09-01 07:21:38,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:38,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-09-01 07:21:38,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,633 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 166 flow. Second operand 3 states and 620 transitions. [2023-09-01 07:21:38,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 263 flow [2023-09-01 07:21:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 253 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 07:21:38,634 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 167 flow [2023-09-01 07:21:38,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-09-01 07:21:38,635 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-09-01 07:21:38,635 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 167 flow [2023-09-01 07:21:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:38,635 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:21:38,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-09-01 07:21:38,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash -345542566, now seen corresponding path program 1 times [2023-09-01 07:21:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069222919] [2023-09-01 07:21:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 07:21:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069222919] [2023-09-01 07:21:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069222919] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:21:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:21:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276634604] [2023-09-01 07:21:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:21:38,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:21:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:21:38,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 445 [2023-09-01 07:21:38,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:38,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 445 [2023-09-01 07:21:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:38,769 INFO L130 PetriNetUnfolder]: 156/301 cut-off events. [2023-09-01 07:21:38,770 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-09-01 07:21:38,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 301 events. 156/301 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 981 event pairs, 4 based on Foata normal form. 12/313 useless extension candidates. Maximal degree in co-relation 884. Up to 244 conditions per place. [2023-09-01 07:21:38,771 INFO L137 encePairwiseOnDemand]: 443/445 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-09-01 07:21:38,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 261 flow [2023-09-01 07:21:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-09-01 07:21:38,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651685393258427 [2023-09-01 07:21:38,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-09-01 07:21:38,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-09-01 07:21:38,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:38,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-09-01 07:21:38,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,778 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 167 flow. Second operand 3 states and 621 transitions. [2023-09-01 07:21:38,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 261 flow [2023-09-01 07:21:38,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:21:38,779 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-09-01 07:21:38,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-09-01 07:21:38,780 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-09-01 07:21:38,780 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-09-01 07:21:38,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:38,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-09-01 07:21:38,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-09-01 07:21:38,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-09-01 07:21:38,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-09-01 07:21:38,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-09-01 07:21:38,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2023-09-01 07:21:38,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-09-01 07:21:38,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-09-01 07:21:38,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-09-01 07:21:38,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-09-01 07:21:38,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-09-01 07:21:38,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 07:21:38,786 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:38,791 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:21:38,791 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:21:38,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:21:38 BasicIcfg [2023-09-01 07:21:38,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:21:38,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:21:38,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:21:38,796 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:21:38,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:26" (3/4) ... [2023-09-01 07:21:38,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:21:38,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:21:38,803 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:21:38,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 07:21:38,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:21:38,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:21:38,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:21:38,840 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:21:38,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:21:38,842 INFO L158 Benchmark]: Toolchain (without parser) took 12812.42ms. Allocated memory was 79.7MB in the beginning and 287.3MB in the end (delta: 207.6MB). Free memory was 57.2MB in the beginning and 135.5MB in the end (delta: -78.3MB). Peak memory consumption was 130.8MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,842 INFO L158 Benchmark]: CDTParser took 1.39ms. Allocated memory is still 50.3MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:21:38,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.67ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 45.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.96ms. Allocated memory is still 79.7MB. 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. [2023-09-01 07:21:38,842 INFO L158 Benchmark]: Boogie Preprocessor took 41.38ms. Allocated memory is still 79.7MB. Free memory was 42.9MB in the beginning and 41.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,843 INFO L158 Benchmark]: RCFGBuilder took 538.58ms. Allocated memory is still 79.7MB. Free memory was 41.2MB in the beginning and 43.0MB in the end (delta: -1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,843 INFO L158 Benchmark]: TraceAbstraction took 11877.58ms. Allocated memory was 79.7MB in the beginning and 287.3MB in the end (delta: 207.6MB). Free memory was 42.3MB in the beginning and 139.7MB in the end (delta: -97.4MB). Peak memory consumption was 111.9MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,843 INFO L158 Benchmark]: Witness Printer took 44.55ms. Allocated memory is still 287.3MB. Free memory was 139.7MB in the beginning and 135.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:21:38,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39ms. Allocated memory is still 50.3MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.67ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 45.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.96ms. Allocated memory is still 79.7MB. 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. * Boogie Preprocessor took 41.38ms. Allocated memory is still 79.7MB. Free memory was 42.9MB in the beginning and 41.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 538.58ms. Allocated memory is still 79.7MB. Free memory was 41.2MB in the beginning and 43.0MB in the end (delta: -1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11877.58ms. Allocated memory was 79.7MB in the beginning and 287.3MB in the end (delta: 207.6MB). Free memory was 42.3MB in the beginning and 139.7MB in the end (delta: -97.4MB). Peak memory consumption was 111.9MB. Max. memory is 16.1GB. * Witness Printer took 44.55ms. Allocated memory is still 287.3MB. Free memory was 139.7MB in the beginning and 135.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 189 PlacesBefore, 35 PlacesAfterwards, 200 TransitionsBefore, 34 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 20 ConcurrentYvCompositions, 12 ChoiceCompositions, 228 TotalNumberOfCompositions, 4814 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4487, independent: 4419, independent conditional: 0, independent unconditional: 4419, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2338, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4487, independent: 2100, independent conditional: 0, independent unconditional: 2100, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 2338, unknown conditional: 0, unknown unconditional: 2338] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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, 269 locations, 16 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: 11.7s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1091 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 809 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1957 IncrementalHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 74 mSDtfsCounter, 1957 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=2, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 268 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 SizeOfPredicates, 3 NumberOfNonLiveVariables, 991 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 276/325 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:21:38,883 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