./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:38:12,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:38:12,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:38:12,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:38:12,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:38:12,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:38:12,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:38:12,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:38:12,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:38:12,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:38:12,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:38:12,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:38:12,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:38:12,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:38:12,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:38:12,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:38:12,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:38:12,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:38:12,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:38:12,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:38:12,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:38:12,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:38:12,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:38:12,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:38:12,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:38:12,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:38:12,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:38:12,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:38:12,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:38:12,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:38:12,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:38:12,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:38:12,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:38:12,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:38:12,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:38:12,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:38:12,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:38:12,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:38:12,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:38:12,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:38:12,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:38:12,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:38:12,301 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:38:12,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:38:12,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:38:12,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:38:12,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:38:12,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:38:12,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:38:12,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:38:12,304 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:38:12,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:38:12,305 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:38:12,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:38:12,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:38:12,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:38:12,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:38:12,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:38:12,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:38:12,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:38:12,307 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:38:12,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:38:12,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:38:12,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:38:12,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:38:12,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:38:12,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:38:12,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:38:12,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:38:12,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:38:12,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:38:12,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:38:12,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:38:12,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:38:12,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:38:12,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:38:12,310 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:38:12,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:38:12,310 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:38:12,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:38:12,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:38:12,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:38:12,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:38:12,615 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:38:12,616 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:38:12,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-30 12:38:13,638 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:38:13,886 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:38:13,887 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-30 12:38:13,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154f4eefd/06cf17244bc5436098a31b39cade8dd1/FLAG552599b25 [2023-08-30 12:38:13,927 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154f4eefd/06cf17244bc5436098a31b39cade8dd1 [2023-08-30 12:38:13,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:38:13,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:38:13,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:38:13,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:38:13,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:38:13,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:38:13" (1/1) ... [2023-08-30 12:38:13,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bac51df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:13, skipping insertion in model container [2023-08-30 12:38:13,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:38:13" (1/1) ... [2023-08-30 12:38:13,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:38:13,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:38:14,369 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-08-30 12:38:14,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:38:14,399 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:38:14,428 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-08-30 12:38:14,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:38:14,499 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:38:14,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14 WrapperNode [2023-08-30 12:38:14,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:38:14,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:38:14,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:38:14,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:38:14,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,550 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-08-30 12:38:14,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:38:14,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:38:14,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:38:14,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:38:14,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,602 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:38:14,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:38:14,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:38:14,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:38:14,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (1/1) ... [2023-08-30 12:38:14,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:38:14,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:14,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:38:14,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:38:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:38:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:38:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:38:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:38:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:38:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:38:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:38:14,694 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:38:14,874 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:38:14,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:38:15,116 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:38:15,123 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:38:15,123 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:38:15,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:38:15 BoogieIcfgContainer [2023-08-30 12:38:15,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:38:15,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:38:15,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:38:15,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:38:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:38:13" (1/3) ... [2023-08-30 12:38:15,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c5afba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:38:15, skipping insertion in model container [2023-08-30 12:38:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:38:14" (2/3) ... [2023-08-30 12:38:15,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c5afba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:38:15, skipping insertion in model container [2023-08-30 12:38:15,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:38:15" (3/3) ... [2023-08-30 12:38:15,143 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-08-30 12:38:15,149 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:38:15,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:38:15,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:38:15,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:38:15,232 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:38:15,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 12:38:15,353 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-08-30 12:38:15,354 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:38:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:38:15,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 12:38:15,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-08-30 12:38:15,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:38:15,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 12:38:15,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 12:38:15,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-08-30 12:38:15,445 INFO L130 PetriNetUnfolder]: 10/154 cut-off events. [2023-08-30 12:38:15,445 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:38:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:38:15,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 12:38:18,817 INFO L134 LiptonReduction]: Checked pairs total: 12122 [2023-08-30 12:38:18,818 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 12:38:18,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:38:18,834 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;@4c224feb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:38:18,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:38:18,839 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 12:38:18,839 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:38:18,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:18,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:18,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:18,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1379937117, now seen corresponding path program 1 times [2023-08-30 12:38:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:18,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688104304] [2023-08-30 12:38:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:18,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:19,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688104304] [2023-08-30 12:38:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688104304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:19,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289205164] [2023-08-30 12:38:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:19,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:19,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 306 [2023-08-30 12:38:19,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:19,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 306 [2023-08-30 12:38:19,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:19,445 INFO L130 PetriNetUnfolder]: 1105/1816 cut-off events. [2023-08-30 12:38:19,445 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-30 12:38:19,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1816 events. 1105/1816 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 432 based on Foata normal form. 30/1275 useless extension candidates. Maximal degree in co-relation 3420. Up to 1222 conditions per place. [2023-08-30 12:38:19,455 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 12:38:19,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-08-30 12:38:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 12:38:19,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 12:38:19,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 12:38:19,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 12:38:19,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:19,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 12:38:19,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,484 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 506 transitions. [2023-08-30 12:38:19,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-08-30 12:38:19,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:38:19,488 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 12:38:19,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 12:38:19,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 12:38:19,494 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 12:38:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:19,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:38:19,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:19,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -595359307, now seen corresponding path program 1 times [2023-08-30 12:38:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:19,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760655103] [2023-08-30 12:38:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:19,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760655103] [2023-08-30 12:38:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760655103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790137550] [2023-08-30 12:38:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:19,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:19,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:38:19,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:19,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:38:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:19,939 INFO L130 PetriNetUnfolder]: 1668/2831 cut-off events. [2023-08-30 12:38:19,939 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 12:38:19,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2831 events. 1668/2831 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14796 event pairs, 835 based on Foata normal form. 0/2211 useless extension candidates. Maximal degree in co-relation 5606. Up to 1755 conditions per place. [2023-08-30 12:38:19,953 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 12:38:19,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-08-30 12:38:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-08-30 12:38:19,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675381263616558 [2023-08-30 12:38:19,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-08-30 12:38:19,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-08-30 12:38:19,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:19,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-08-30 12:38:19,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,964 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 521 transitions. [2023-08-30 12:38:19,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-08-30 12:38:19,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:19,969 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 12:38:19,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 12:38:19,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 12:38:19,970 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 12:38:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:19,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:19,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:38:19,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:19,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash 510376855, now seen corresponding path program 1 times [2023-08-30 12:38:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158712378] [2023-08-30 12:38:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158712378] [2023-08-30 12:38:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158712378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175084622] [2023-08-30 12:38:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:20,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:20,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:38:20,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:20,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:38:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:20,391 INFO L130 PetriNetUnfolder]: 2077/3384 cut-off events. [2023-08-30 12:38:20,391 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-08-30 12:38:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18449 event pairs, 1125 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-08-30 12:38:20,411 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 12:38:20,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-08-30 12:38:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 12:38:20,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642701525054467 [2023-08-30 12:38:20,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 12:38:20,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 12:38:20,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:20,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 12:38:20,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,418 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 518 transitions. [2023-08-30 12:38:20,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-08-30 12:38:20,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:20,420 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 12:38:20,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 12:38:20,421 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:38:20,421 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 12:38:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:20,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:20,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:38:20,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:20,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768095, now seen corresponding path program 1 times [2023-08-30 12:38:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:20,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737372591] [2023-08-30 12:38:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:20,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:20,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737372591] [2023-08-30 12:38:20,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737372591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:20,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:20,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:20,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928161073] [2023-08-30 12:38:20,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:20,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:20,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:20,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:20,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:38:20,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:20,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:38:20,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:20,774 INFO L130 PetriNetUnfolder]: 1793/3144 cut-off events. [2023-08-30 12:38:20,775 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 12:38:20,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17827 event pairs, 95 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6840. Up to 2734 conditions per place. [2023-08-30 12:38:20,789 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 12:38:20,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 313 flow [2023-08-30 12:38:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 12:38:20,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 12:38:20,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 12:38:20,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 12:38:20,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:20,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 12:38:20,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,799 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 506 transitions. [2023-08-30 12:38:20,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 313 flow [2023-08-30 12:38:20,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:20,802 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 12:38:20,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 12:38:20,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:38:20,804 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 12:38:20,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:20,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:38:20,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:20,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768193, now seen corresponding path program 1 times [2023-08-30 12:38:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792866926] [2023-08-30 12:38:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:38:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:20,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792866926] [2023-08-30 12:38:20,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792866926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:20,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:20,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417384783] [2023-08-30 12:38:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:20,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:20,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:20,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 12:38:20,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:20,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:20,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 12:38:20,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:21,138 INFO L130 PetriNetUnfolder]: 1680/2953 cut-off events. [2023-08-30 12:38:21,139 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 12:38:21,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2953 events. 1680/2953 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16501 event pairs, 305 based on Foata normal form. 0/2659 useless extension candidates. Maximal degree in co-relation 6342. Up to 2083 conditions per place. [2023-08-30 12:38:21,156 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 56 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 12:38:21,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 309 flow [2023-08-30 12:38:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 12:38:21,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479302832244008 [2023-08-30 12:38:21,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 12:38:21,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 12:38:21,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:21,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 12:38:21,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:21,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:21,165 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 503 transitions. [2023-08-30 12:38:21,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 309 flow [2023-08-30 12:38:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:21,168 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 12:38:21,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 12:38:21,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:38:21,169 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 12:38:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:21,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:21,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:38:21,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:21,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1231784516, now seen corresponding path program 1 times [2023-08-30 12:38:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861830720] [2023-08-30 12:38:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861830720] [2023-08-30 12:38:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861830720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930305497] [2023-08-30 12:38:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:21,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:21,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:21,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:38:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:38:21,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:21,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930305497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:21,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 12:38:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322575517] [2023-08-30 12:38:21,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:38:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:38:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:38:21,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:38:21,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:21,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:21,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:38:21,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:22,347 INFO L130 PetriNetUnfolder]: 4162/6891 cut-off events. [2023-08-30 12:38:22,348 INFO L131 PetriNetUnfolder]: For 3792/3792 co-relation queries the response was YES. [2023-08-30 12:38:22,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 6891 events. 4162/6891 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39087 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16768. Up to 2039 conditions per place. [2023-08-30 12:38:22,384 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 12:38:22,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 12:38:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:38:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:38:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-08-30 12:38:22,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175070028011205 [2023-08-30 12:38:22,390 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-08-30 12:38:22,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-08-30 12:38:22,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:22,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-08-30 12:38:22,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:22,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:22,403 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:22,403 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2217 transitions. [2023-08-30 12:38:22,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 12:38:22,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:22,419 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 12:38:22,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 12:38:22,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 12:38:22,420 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 12:38:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:22,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:22,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:22,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 12:38:22,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:38:22,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:22,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1723074253, now seen corresponding path program 1 times [2023-08-30 12:38:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015671433] [2023-08-30 12:38:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015671433] [2023-08-30 12:38:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015671433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:38:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144358769] [2023-08-30 12:38:22,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:22,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:22,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 306 [2023-08-30 12:38:22,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:22,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:22,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 306 [2023-08-30 12:38:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:23,102 INFO L130 PetriNetUnfolder]: 1910/3279 cut-off events. [2023-08-30 12:38:23,102 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 12:38:23,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17380 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 9336. Up to 2259 conditions per place. [2023-08-30 12:38:23,127 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 12:38:23,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-08-30 12:38:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 12:38:23,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 12:38:23,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 12:38:23,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 12:38:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 12:38:23,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,133 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 496 transitions. [2023-08-30 12:38:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-08-30 12:38:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 12:38:23,162 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 12:38:23,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 12:38:23,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 12:38:23,163 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 12:38:23,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:23,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:38:23,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:23,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash -470870337, now seen corresponding path program 1 times [2023-08-30 12:38:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24392173] [2023-08-30 12:38:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:23,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:23,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24392173] [2023-08-30 12:38:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24392173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849904806] [2023-08-30 12:38:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:23,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:23,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:38:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:23,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:38:23,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:23,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:38:23,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849904806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:23,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:38:23,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 12:38:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330532356] [2023-08-30 12:38:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:23,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:38:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:23,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:38:23,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:38:23,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:38:23,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:23,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:38:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:23,845 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 12:38:23,845 INFO L131 PetriNetUnfolder]: For 3013/3013 co-relation queries the response was YES. [2023-08-30 12:38:23,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15734 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 12:38:23,864 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 12:38:23,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 12:38:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:38:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:38:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-08-30 12:38:23,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070806100217865 [2023-08-30 12:38:23,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-08-30 12:38:23,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-08-30 12:38:23,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:23,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-08-30 12:38:23,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,873 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 931 transitions. [2023-08-30 12:38:23,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 12:38:23,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:23,883 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 12:38:23,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 12:38:23,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:38:23,886 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 12:38:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:23,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:23,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:38:23,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:24,092 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,SelfDestructingSolverStorable7 [2023-08-30 12:38:24,093 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:24,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash -334382920, now seen corresponding path program 1 times [2023-08-30 12:38:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156410477] [2023-08-30 12:38:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:24,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156410477] [2023-08-30 12:38:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156410477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:24,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179112377] [2023-08-30 12:38:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:24,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:24,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:24,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:38:24,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:24,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:38:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:24,427 INFO L130 PetriNetUnfolder]: 1584/2841 cut-off events. [2023-08-30 12:38:24,428 INFO L131 PetriNetUnfolder]: For 3626/3630 co-relation queries the response was YES. [2023-08-30 12:38:24,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14188 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-08-30 12:38:24,442 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 12:38:24,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-08-30 12:38:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 12:38:24,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348583877995643 [2023-08-30 12:38:24,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 12:38:24,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 12:38:24,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:24,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 12:38:24,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,447 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 491 transitions. [2023-08-30 12:38:24,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-08-30 12:38:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:38:24,454 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-08-30 12:38:24,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-08-30 12:38:24,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 12:38:24,455 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-08-30 12:38:24,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:24,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:38:24,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:38:24,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:24,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -334382869, now seen corresponding path program 1 times [2023-08-30 12:38:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350612119] [2023-08-30 12:38:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:38:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350612119] [2023-08-30 12:38:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350612119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:24,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:24,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:38:24,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098612323] [2023-08-30 12:38:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:24,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:38:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:38:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:38:24,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 12:38:24,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:24,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 12:38:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:24,751 INFO L130 PetriNetUnfolder]: 1421/2560 cut-off events. [2023-08-30 12:38:24,752 INFO L131 PetriNetUnfolder]: For 3186/3190 co-relation queries the response was YES. [2023-08-30 12:38:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 2560 events. 1421/2560 cut-off events. For 3186/3190 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12303 event pairs, 395 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-08-30 12:38:24,766 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 12:38:24,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-08-30 12:38:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:38:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:38:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 12:38:24,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 12:38:24,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 12:38:24,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 12:38:24,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:24,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 12:38:24,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,773 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 496 transitions. [2023-08-30 12:38:24,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-08-30 12:38:24,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:24,782 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-08-30 12:38:24,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 12:38:24,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:38:24,784 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-08-30 12:38:24,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:24,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:38:24,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:24,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash -591784532, now seen corresponding path program 1 times [2023-08-30 12:38:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265630533] [2023-08-30 12:38:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265630533] [2023-08-30 12:38:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265630533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:38:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422061162] [2023-08-30 12:38:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:24,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:38:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:38:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:38:24,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 306 [2023-08-30 12:38:24,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:24,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:24,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 306 [2023-08-30 12:38:24,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:25,146 INFO L130 PetriNetUnfolder]: 1424/2553 cut-off events. [2023-08-30 12:38:25,146 INFO L131 PetriNetUnfolder]: For 4190/4190 co-relation queries the response was YES. [2023-08-30 12:38:25,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12080 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7946. Up to 2415 conditions per place. [2023-08-30 12:38:25,159 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-08-30 12:38:25,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-08-30 12:38:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:38:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:38:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 12:38:25,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089869281045751 [2023-08-30 12:38:25,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 12:38:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 12:38:25,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:25,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 12:38:25,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,166 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 623 transitions. [2023-08-30 12:38:25,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-08-30 12:38:25,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:25,173 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-08-30 12:38:25,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 12:38:25,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 12:38:25,174 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-08-30 12:38:25,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:25,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:25,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:38:25,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:25,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1049374055, now seen corresponding path program 1 times [2023-08-30 12:38:25,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:25,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464373495] [2023-08-30 12:38:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:25,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464373495] [2023-08-30 12:38:25,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464373495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:25,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346606513] [2023-08-30 12:38:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:25,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:25,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:25,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:25,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:38:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:25,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:38:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:25,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:38:25,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346606513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:25,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:38:25,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 12:38:25,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713226817] [2023-08-30 12:38:25,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:38:25,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:38:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:38:25,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 306 [2023-08-30 12:38:25,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:25,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 306 [2023-08-30 12:38:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:25,744 INFO L130 PetriNetUnfolder]: 1361/2424 cut-off events. [2023-08-30 12:38:25,745 INFO L131 PetriNetUnfolder]: For 4092/4092 co-relation queries the response was YES. [2023-08-30 12:38:25,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10945 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7743. Up to 1340 conditions per place. [2023-08-30 12:38:25,764 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-08-30 12:38:25,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 784 flow [2023-08-30 12:38:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:38:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:38:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2023-08-30 12:38:25,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782135076252726 [2023-08-30 12:38:25,768 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2023-08-30 12:38:25,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2023-08-30 12:38:25,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:25,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2023-08-30 12:38:25,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,774 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 914 transitions. [2023-08-30 12:38:25,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 784 flow [2023-08-30 12:38:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:38:25,782 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-08-30 12:38:25,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 12:38:25,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 12:38:25,784 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-08-30 12:38:25,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:25,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:25,784 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:25,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:25,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:25,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:25,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash -733508628, now seen corresponding path program 1 times [2023-08-30 12:38:25,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499895153] [2023-08-30 12:38:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:26,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:26,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499895153] [2023-08-30 12:38:26,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499895153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:26,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:38:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775183522] [2023-08-30 12:38:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:38:26,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:38:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:38:26,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:38:26,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:26,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:26,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:38:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:26,414 INFO L130 PetriNetUnfolder]: 1410/2523 cut-off events. [2023-08-30 12:38:26,414 INFO L131 PetriNetUnfolder]: For 4800/4800 co-relation queries the response was YES. [2023-08-30 12:38:26,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 2523 events. 1410/2523 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11570 event pairs, 275 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8322. Up to 1338 conditions per place. [2023-08-30 12:38:26,432 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 87 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2023-08-30 12:38:26,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 940 flow [2023-08-30 12:38:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:38:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:38:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2023-08-30 12:38:26,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-08-30 12:38:26,435 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2023-08-30 12:38:26,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2023-08-30 12:38:26,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:26,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2023-08-30 12:38:26,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:26,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:26,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:26,440 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 5 states and 771 transitions. [2023-08-30 12:38:26,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 940 flow [2023-08-30 12:38:26,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 931 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 12:38:26,449 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 612 flow [2023-08-30 12:38:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 12:38:26,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 12:38:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 612 flow [2023-08-30 12:38:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 12:38:26,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:38:26,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:26,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1545815804, now seen corresponding path program 1 times [2023-08-30 12:38:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25900317] [2023-08-30 12:38:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:26,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25900317] [2023-08-30 12:38:26,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25900317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:26,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884151401] [2023-08-30 12:38:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:26,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:26,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:26,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:38:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:38:26,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:26,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884151401] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:26,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 12:38:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282151589] [2023-08-30 12:38:26,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:26,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:38:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:38:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:38:27,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:38:27,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:27,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:27,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:38:27,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:27,828 INFO L130 PetriNetUnfolder]: 2450/4359 cut-off events. [2023-08-30 12:38:27,828 INFO L131 PetriNetUnfolder]: For 13104/13104 co-relation queries the response was YES. [2023-08-30 12:38:27,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15858 conditions, 4359 events. 2450/4359 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19534 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15200. Up to 873 conditions per place. [2023-08-30 12:38:27,858 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-08-30 12:38:27,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2626 flow [2023-08-30 12:38:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:38:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:38:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2023-08-30 12:38:27,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046439628482973 [2023-08-30 12:38:27,866 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2023-08-30 12:38:27,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2023-08-30 12:38:27,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:27,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2023-08-30 12:38:27,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:27,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:27,882 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:27,882 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 612 flow. Second operand 19 states and 2934 transitions. [2023-08-30 12:38:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2626 flow [2023-08-30 12:38:27,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 2606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:38:27,898 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 1228 flow [2023-08-30 12:38:27,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-30 12:38:27,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2023-08-30 12:38:27,899 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 1228 flow [2023-08-30 12:38:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:27,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:27,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:27,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:28,106 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:28,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 921312875, now seen corresponding path program 2 times [2023-08-30 12:38:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715791321] [2023-08-30 12:38:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:28,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:28,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715791321] [2023-08-30 12:38:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715791321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:38:28,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:38:28,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 12:38:28,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780821752] [2023-08-30 12:38:28,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:38:28,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:38:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:38:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:38:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:28,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:28,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:28,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:28,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:28,929 INFO L130 PetriNetUnfolder]: 2313/4164 cut-off events. [2023-08-30 12:38:28,929 INFO L131 PetriNetUnfolder]: For 14098/14098 co-relation queries the response was YES. [2023-08-30 12:38:28,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 4164 events. 2313/4164 cut-off events. For 14098/14098 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18763 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 14958. Up to 2986 conditions per place. [2023-08-30 12:38:28,958 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 70 selfloop transitions, 54 changer transitions 0/125 dead transitions. [2023-08-30 12:38:28,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1405 flow [2023-08-30 12:38:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:38:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:38:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-08-30 12:38:28,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599673202614379 [2023-08-30 12:38:28,962 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-08-30 12:38:28,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-08-30 12:38:28,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:28,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-08-30 12:38:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:28,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:28,968 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:28,968 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 1228 flow. Second operand 8 states and 1126 transitions. [2023-08-30 12:38:28,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1405 flow [2023-08-30 12:38:28,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1231 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-30 12:38:28,991 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 937 flow [2023-08-30 12:38:28,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-30 12:38:28,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 12:38:28,992 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 937 flow [2023-08-30 12:38:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:28,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:28,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:38:28,993 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:28,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 921312938, now seen corresponding path program 2 times [2023-08-30 12:38:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479704506] [2023-08-30 12:38:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:38:29,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479704506] [2023-08-30 12:38:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479704506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086439193] [2023-08-30 12:38:29,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:38:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:29,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:29,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:38:29,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:38:29,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:29,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:38:29,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:29,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086439193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:29,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-08-30 12:38:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979163687] [2023-08-30 12:38:29,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:38:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:38:29,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:38:29,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:29,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 937 flow. Second operand has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:29,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:29,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:30,286 INFO L130 PetriNetUnfolder]: 2908/5229 cut-off events. [2023-08-30 12:38:30,286 INFO L131 PetriNetUnfolder]: For 15002/15002 co-relation queries the response was YES. [2023-08-30 12:38:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5229 events. 2908/5229 cut-off events. For 15002/15002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25037 event pairs, 441 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 18365. Up to 2471 conditions per place. [2023-08-30 12:38:30,317 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 183 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2023-08-30 12:38:30,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 230 transitions, 2187 flow [2023-08-30 12:38:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:38:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:38:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2149 transitions. [2023-08-30 12:38:30,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681917211328976 [2023-08-30 12:38:30,323 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2149 transitions. [2023-08-30 12:38:30,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2149 transitions. [2023-08-30 12:38:30,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2149 transitions. [2023-08-30 12:38:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.26666666666668) internal successors, (2149), 15 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:30,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:30,334 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:30,334 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 937 flow. Second operand 15 states and 2149 transitions. [2023-08-30 12:38:30,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 230 transitions, 2187 flow [2023-08-30 12:38:30,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2127 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 12:38:30,366 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1342 flow [2023-08-30 12:38:30,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-08-30 12:38:30,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-08-30 12:38:30,366 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1342 flow [2023-08-30 12:38:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:30,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:30,367 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:30,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:30,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 12:38:30,573 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:30,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash 810645160, now seen corresponding path program 3 times [2023-08-30 12:38:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:30,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024946721] [2023-08-30 12:38:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:30,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:38:30,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024946721] [2023-08-30 12:38:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024946721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98505491] [2023-08-30 12:38:30,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:38:30,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:30,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:30,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:30,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:38:31,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 12:38:31,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:31,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 12:38:31,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:31,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98505491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:31,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-08-30 12:38:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83437157] [2023-08-30 12:38:31,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:31,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 12:38:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 12:38:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-08-30 12:38:31,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:31,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:31,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:31,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:31,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:32,531 INFO L130 PetriNetUnfolder]: 3558/6375 cut-off events. [2023-08-30 12:38:32,532 INFO L131 PetriNetUnfolder]: For 24520/24520 co-relation queries the response was YES. [2023-08-30 12:38:32,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 6375 events. 3558/6375 cut-off events. For 24520/24520 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32125 event pairs, 485 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 23859. Up to 1321 conditions per place. [2023-08-30 12:38:32,564 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 269 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2023-08-30 12:38:32,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 361 transitions, 3446 flow [2023-08-30 12:38:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 12:38:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 12:38:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3586 transitions. [2023-08-30 12:38:32,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875816993464053 [2023-08-30 12:38:32,573 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3586 transitions. [2023-08-30 12:38:32,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3586 transitions. [2023-08-30 12:38:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3586 transitions. [2023-08-30 12:38:32,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.44) internal successors, (3586), 25 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:32,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:32,589 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:32,589 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1342 flow. Second operand 25 states and 3586 transitions. [2023-08-30 12:38:32,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 361 transitions, 3446 flow [2023-08-30 12:38:32,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 361 transitions, 3362 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 12:38:32,647 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1991 flow [2023-08-30 12:38:32,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1991, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-08-30 12:38:32,647 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 12:38:32,648 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1991 flow [2023-08-30 12:38:32,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:32,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:32,649 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 12:38:32,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:32,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:38:32,855 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:32,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1147695864, now seen corresponding path program 2 times [2023-08-30 12:38:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031811893] [2023-08-30 12:38:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:33,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031811893] [2023-08-30 12:38:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031811893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885050409] [2023-08-30 12:38:33,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:38:33,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:33,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:33,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:33,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:38:33,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:38:33,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:33,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:38:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:33,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:38:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885050409] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:33,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:33,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 12:38:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129208108] [2023-08-30 12:38:33,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 12:38:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 12:38:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 12:38:34,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:38:34,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1991 flow. Second operand has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:34,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:34,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:38:34,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:36,091 INFO L130 PetriNetUnfolder]: 5858/10531 cut-off events. [2023-08-30 12:38:36,091 INFO L131 PetriNetUnfolder]: For 57270/57270 co-relation queries the response was YES. [2023-08-30 12:38:36,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 10531 events. 5858/10531 cut-off events. For 57270/57270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51478 event pairs, 939 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 40832. Up to 2778 conditions per place. [2023-08-30 12:38:36,245 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 496 selfloop transitions, 115 changer transitions 0/612 dead transitions. [2023-08-30 12:38:36,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 612 transitions, 6061 flow [2023-08-30 12:38:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 12:38:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 12:38:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5387 transitions. [2023-08-30 12:38:36,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029878618113912 [2023-08-30 12:38:36,252 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5387 transitions. [2023-08-30 12:38:36,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5387 transitions. [2023-08-30 12:38:36,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:36,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5387 transitions. [2023-08-30 12:38:36,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.9142857142857) internal successors, (5387), 35 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:36,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:36,275 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:36,275 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1991 flow. Second operand 35 states and 5387 transitions. [2023-08-30 12:38:36,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 612 transitions, 6061 flow [2023-08-30 12:38:36,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 5944 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-30 12:38:36,387 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 3174 flow [2023-08-30 12:38:36,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3174, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2023-08-30 12:38:36,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 12:38:36,388 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 3174 flow [2023-08-30 12:38:36,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:36,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:36,390 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:36,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 12:38:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:36,596 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:36,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1905252954, now seen corresponding path program 4 times [2023-08-30 12:38:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199290201] [2023-08-30 12:38:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199290201] [2023-08-30 12:38:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199290201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221705823] [2023-08-30 12:38:37,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:38:37,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:37,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:37,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:37,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:38:37,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:38:37,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:37,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:38:37,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:37,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:37,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221705823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:37,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:37,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2023-08-30 12:38:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426951639] [2023-08-30 12:38:37,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:37,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 12:38:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 12:38:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-08-30 12:38:37,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:37,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 3174 flow. Second operand has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:37,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:37,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:37,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:40,459 INFO L130 PetriNetUnfolder]: 8021/14364 cut-off events. [2023-08-30 12:38:40,459 INFO L131 PetriNetUnfolder]: For 84336/84336 co-relation queries the response was YES. [2023-08-30 12:38:40,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 14364 events. 8021/14364 cut-off events. For 84336/84336 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76194 event pairs, 771 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 56728. Up to 2988 conditions per place. [2023-08-30 12:38:40,548 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 405 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2023-08-30 12:38:40,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 622 transitions, 7379 flow [2023-08-30 12:38:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 12:38:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 12:38:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5565 transitions. [2023-08-30 12:38:40,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663147310206134 [2023-08-30 12:38:40,555 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5565 transitions. [2023-08-30 12:38:40,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5565 transitions. [2023-08-30 12:38:40,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:40,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5565 transitions. [2023-08-30 12:38:40,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.69230769230768) internal successors, (5565), 39 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:40,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:40,575 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:40,575 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 3174 flow. Second operand 39 states and 5565 transitions. [2023-08-30 12:38:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 622 transitions, 7379 flow [2023-08-30 12:38:40,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 622 transitions, 6960 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-08-30 12:38:40,778 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 4970 flow [2023-08-30 12:38:40,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4970, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-08-30 12:38:40,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2023-08-30 12:38:40,778 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 4970 flow [2023-08-30 12:38:40,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:40,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:40,779 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:40,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 12:38:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:40,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:40,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2029433002, now seen corresponding path program 1 times [2023-08-30 12:38:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231353500] [2023-08-30 12:38:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231353500] [2023-08-30 12:38:41,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231353500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:41,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335141014] [2023-08-30 12:38:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:41,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:41,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:41,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:38:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:41,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 12:38:41,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:41,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335141014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:42,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:42,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-08-30 12:38:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524024915] [2023-08-30 12:38:42,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:42,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 12:38:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 12:38:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-08-30 12:38:42,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:42,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 4970 flow. Second operand has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:42,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:42,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:42,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:46,758 INFO L130 PetriNetUnfolder]: 11730/21007 cut-off events. [2023-08-30 12:38:46,758 INFO L131 PetriNetUnfolder]: For 139704/139704 co-relation queries the response was YES. [2023-08-30 12:38:46,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 21007 events. 11730/21007 cut-off events. For 139704/139704 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 124637 event pairs, 1301 based on Foata normal form. 166/21173 useless extension candidates. Maximal degree in co-relation 85090. Up to 4457 conditions per place. [2023-08-30 12:38:46,928 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 387 selfloop transitions, 384 changer transitions 0/772 dead transitions. [2023-08-30 12:38:46,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 772 transitions, 11415 flow [2023-08-30 12:38:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 12:38:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 12:38:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4723 transitions. [2023-08-30 12:38:46,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771637948108535 [2023-08-30 12:38:46,933 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4723 transitions. [2023-08-30 12:38:46,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4723 transitions. [2023-08-30 12:38:46,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:46,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4723 transitions. [2023-08-30 12:38:46,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 143.12121212121212) internal successors, (4723), 33 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:46,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:46,950 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:46,950 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 4970 flow. Second operand 33 states and 4723 transitions. [2023-08-30 12:38:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 772 transitions, 11415 flow [2023-08-30 12:38:47,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 772 transitions, 10697 flow, removed 273 selfloop flow, removed 13 redundant places. [2023-08-30 12:38:47,462 INFO L231 Difference]: Finished difference. Result has 237 places, 488 transitions, 9122 flow [2023-08-30 12:38:47,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9122, PETRI_PLACES=237, PETRI_TRANSITIONS=488} [2023-08-30 12:38:47,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2023-08-30 12:38:47,463 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 488 transitions, 9122 flow [2023-08-30 12:38:47,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:47,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:47,464 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:47,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:38:47,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:47,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:47,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash 792853539, now seen corresponding path program 5 times [2023-08-30 12:38:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:47,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141497238] [2023-08-30 12:38:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:38:48,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141497238] [2023-08-30 12:38:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141497238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075151664] [2023-08-30 12:38:48,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:38:48,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:48,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:48,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:38:48,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-30 12:38:48,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:48,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 12:38:48,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:48,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:38:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075151664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:49,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 39 [2023-08-30 12:38:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733838262] [2023-08-30 12:38:49,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:49,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 12:38:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 12:38:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 12:38:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:49,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 488 transitions, 9122 flow. Second operand has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:49,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:49,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:38:56,189 INFO L130 PetriNetUnfolder]: 15387/27478 cut-off events. [2023-08-30 12:38:56,189 INFO L131 PetriNetUnfolder]: For 211558/211558 co-relation queries the response was YES. [2023-08-30 12:38:56,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116852 conditions, 27478 events. 15387/27478 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 169509 event pairs, 2195 based on Foata normal form. 160/27638 useless extension candidates. Maximal degree in co-relation 115019. Up to 5830 conditions per place. [2023-08-30 12:38:56,465 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 669 selfloop transitions, 469 changer transitions 0/1139 dead transitions. [2023-08-30 12:38:56,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1139 transitions, 16944 flow [2023-08-30 12:38:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 12:38:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 12:38:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7184 transitions. [2023-08-30 12:38:56,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46954248366013074 [2023-08-30 12:38:56,473 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7184 transitions. [2023-08-30 12:38:56,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7184 transitions. [2023-08-30 12:38:56,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:38:56,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7184 transitions. [2023-08-30 12:38:56,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 143.68) internal successors, (7184), 50 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:56,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:56,496 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:56,497 INFO L175 Difference]: Start difference. First operand has 237 places, 488 transitions, 9122 flow. Second operand 50 states and 7184 transitions. [2023-08-30 12:38:56,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1139 transitions, 16944 flow [2023-08-30 12:38:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1139 transitions, 16381 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-08-30 12:38:57,128 INFO L231 Difference]: Finished difference. Result has 298 places, 628 transitions, 13384 flow [2023-08-30 12:38:57,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=13384, PETRI_PLACES=298, PETRI_TRANSITIONS=628} [2023-08-30 12:38:57,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-30 12:38:57,129 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 628 transitions, 13384 flow [2023-08-30 12:38:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:57,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:38:57,129 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:38:57,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 12:38:57,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 12:38:57,330 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:38:57,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:38:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1862134967, now seen corresponding path program 2 times [2023-08-30 12:38:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:38:57,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466038055] [2023-08-30 12:38:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:38:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:38:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:38:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:38:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466038055] [2023-08-30 12:38:58,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466038055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:38:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383948910] [2023-08-30 12:38:58,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:38:58,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:38:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:38:58,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:38:58,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:38:58,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:38:58,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:38:58,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:38:58,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:38:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:58,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:38:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:38:58,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383948910] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:38:58,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:38:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2023-08-30 12:38:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731713618] [2023-08-30 12:38:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:38:58,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 12:38:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:38:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 12:38:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 12:38:59,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:38:59,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 628 transitions, 13384 flow. Second operand has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:38:59,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:38:59,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:38:59,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:39:08,818 INFO L130 PetriNetUnfolder]: 19671/35170 cut-off events. [2023-08-30 12:39:08,818 INFO L131 PetriNetUnfolder]: For 319324/319324 co-relation queries the response was YES. [2023-08-30 12:39:09,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154708 conditions, 35170 events. 19671/35170 cut-off events. For 319324/319324 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 228920 event pairs, 2231 based on Foata normal form. 234/35404 useless extension candidates. Maximal degree in co-relation 152762. Up to 7561 conditions per place. [2023-08-30 12:39:09,362 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 512 selfloop transitions, 778 changer transitions 0/1291 dead transitions. [2023-08-30 12:39:09,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1291 transitions, 22541 flow [2023-08-30 12:39:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 12:39:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 12:39:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7149 transitions. [2023-08-30 12:39:09,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46725490196078434 [2023-08-30 12:39:09,370 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7149 transitions. [2023-08-30 12:39:09,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7149 transitions. [2023-08-30 12:39:09,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:39:09,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7149 transitions. [2023-08-30 12:39:09,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 142.98) internal successors, (7149), 50 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:09,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:09,393 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:09,393 INFO L175 Difference]: Start difference. First operand has 298 places, 628 transitions, 13384 flow. Second operand 50 states and 7149 transitions. [2023-08-30 12:39:09,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1291 transitions, 22541 flow [2023-08-30 12:39:10,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1291 transitions, 21593 flow, removed 353 selfloop flow, removed 17 redundant places. [2023-08-30 12:39:10,852 INFO L231 Difference]: Finished difference. Result has 342 places, 846 transitions, 19346 flow [2023-08-30 12:39:10,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19346, PETRI_PLACES=342, PETRI_TRANSITIONS=846} [2023-08-30 12:39:10,853 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2023-08-30 12:39:10,853 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 846 transitions, 19346 flow [2023-08-30 12:39:10,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:10,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:39:10,854 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:39:10,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 12:39:11,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 12:39:11,055 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:39:11,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:39:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1131368074, now seen corresponding path program 3 times [2023-08-30 12:39:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:39:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687090980] [2023-08-30 12:39:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:39:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:39:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:39:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 12:39:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:39:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687090980] [2023-08-30 12:39:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687090980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:39:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467865216] [2023-08-30 12:39:11,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:39:11,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:39:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:39:11,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:39:11,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 12:39:12,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 12:39:12,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:39:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:39:12,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:39:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:39:12,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:39:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:39:12,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467865216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:39:12,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:39:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2023-08-30 12:39:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483792018] [2023-08-30 12:39:12,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:39:12,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 12:39:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:39:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 12:39:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 12:39:12,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:39:12,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 846 transitions, 19346 flow. Second operand has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:12,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:39:12,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:39:12,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:39:32,622 INFO L130 PetriNetUnfolder]: 33608/60213 cut-off events. [2023-08-30 12:39:32,622 INFO L131 PetriNetUnfolder]: For 533538/533538 co-relation queries the response was YES. [2023-08-30 12:39:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275460 conditions, 60213 events. 33608/60213 cut-off events. For 533538/533538 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 421723 event pairs, 4963 based on Foata normal form. 132/60345 useless extension candidates. Maximal degree in co-relation 273438. Up to 13087 conditions per place. [2023-08-30 12:39:33,798 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 670 selfloop transitions, 1366 changer transitions 0/2037 dead transitions. [2023-08-30 12:39:33,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2037 transitions, 44227 flow [2023-08-30 12:39:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 12:39:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 12:39:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5852 transitions. [2023-08-30 12:39:33,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664434879642914 [2023-08-30 12:39:33,802 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5852 transitions. [2023-08-30 12:39:33,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5852 transitions. [2023-08-30 12:39:33,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:39:33,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5852 transitions. [2023-08-30 12:39:33,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 142.73170731707316) internal successors, (5852), 41 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:33,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:33,819 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:33,820 INFO L175 Difference]: Start difference. First operand has 342 places, 846 transitions, 19346 flow. Second operand 41 states and 5852 transitions. [2023-08-30 12:39:33,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2037 transitions, 44227 flow [2023-08-30 12:39:37,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2037 transitions, 41632 flow, removed 992 selfloop flow, removed 14 redundant places. [2023-08-30 12:39:37,307 INFO L231 Difference]: Finished difference. Result has 381 places, 1646 transitions, 39905 flow [2023-08-30 12:39:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=18358, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39905, PETRI_PLACES=381, PETRI_TRANSITIONS=1646} [2023-08-30 12:39:37,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2023-08-30 12:39:37,308 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1646 transitions, 39905 flow [2023-08-30 12:39:37,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:37,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:39:37,309 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:39:37,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:39:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 12:39:37,513 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:39:37,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:39:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1735374202, now seen corresponding path program 4 times [2023-08-30 12:39:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:39:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413832775] [2023-08-30 12:39:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:39:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:39:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:39:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:39:38,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:39:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413832775] [2023-08-30 12:39:38,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413832775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:39:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232237906] [2023-08-30 12:39:38,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:39:38,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:39:38,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:39:38,543 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:39:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 12:39:39,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:39:39,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:39:39,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 12:39:39,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:39:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:39:39,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:39:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:39:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232237906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:39:40,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:39:40,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 12:39:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403037837] [2023-08-30 12:39:40,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:39:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 12:39:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:39:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 12:39:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 12:39:40,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:39:40,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1646 transitions, 39905 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:39:40,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:39:40,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:39:40,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:40:28,089 INFO L130 PetriNetUnfolder]: 55915/100262 cut-off events. [2023-08-30 12:40:28,090 INFO L131 PetriNetUnfolder]: For 1060206/1060206 co-relation queries the response was YES. [2023-08-30 12:40:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466443 conditions, 100262 events. 55915/100262 cut-off events. For 1060206/1060206 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 766781 event pairs, 9247 based on Foata normal form. 430/100692 useless extension candidates. Maximal degree in co-relation 464079. Up to 21918 conditions per place. [2023-08-30 12:40:30,641 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1163 selfloop transitions, 2344 changer transitions 0/3508 dead transitions. [2023-08-30 12:40:30,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3508 transitions, 79914 flow [2023-08-30 12:40:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 12:40:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 12:40:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9172 transitions. [2023-08-30 12:40:30,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834150326797386 [2023-08-30 12:40:30,650 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9172 transitions. [2023-08-30 12:40:30,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9172 transitions. [2023-08-30 12:40:30,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:40:30,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9172 transitions. [2023-08-30 12:40:30,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 143.3125) internal successors, (9172), 64 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:40:30,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:40:30,676 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:40:30,677 INFO L175 Difference]: Start difference. First operand has 381 places, 1646 transitions, 39905 flow. Second operand 64 states and 9172 transitions. [2023-08-30 12:40:30,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3508 transitions, 79914 flow [2023-08-30 12:40:40,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 3508 transitions, 77199 flow, removed 1269 selfloop flow, removed 11 redundant places. [2023-08-30 12:40:40,913 INFO L231 Difference]: Finished difference. Result has 460 places, 2817 transitions, 74685 flow [2023-08-30 12:40:40,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=37897, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=74685, PETRI_PLACES=460, PETRI_TRANSITIONS=2817} [2023-08-30 12:40:40,916 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2023-08-30 12:40:40,916 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 2817 transitions, 74685 flow [2023-08-30 12:40:40,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:40:40,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:40:40,917 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:40:40,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 12:40:41,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 12:40:41,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:40:41,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:40:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash 979517914, now seen corresponding path program 5 times [2023-08-30 12:40:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:40:41,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020718141] [2023-08-30 12:40:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:40:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:40:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:40:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:40:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:40:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020718141] [2023-08-30 12:40:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020718141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:40:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625074754] [2023-08-30 12:40:41,990 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:40:41,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:40:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:40:41,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:40:42,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 12:40:42,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 12:40:42,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:40:42,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 12:40:42,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:40:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:40:42,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:40:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:40:43,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625074754] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:40:43,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:40:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 12:40:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164333562] [2023-08-30 12:40:43,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:40:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 12:40:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:40:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 12:40:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 12:40:43,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:40:43,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2817 transitions, 74685 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:40:43,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:40:43,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:40:43,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:42:36,711 INFO L130 PetriNetUnfolder]: 83695/149958 cut-off events. [2023-08-30 12:42:36,711 INFO L131 PetriNetUnfolder]: For 1772680/1772680 co-relation queries the response was YES. [2023-08-30 12:42:40,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728256 conditions, 149958 events. 83695/149958 cut-off events. For 1772680/1772680 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 1229066 event pairs, 10707 based on Foata normal form. 428/150386 useless extension candidates. Maximal degree in co-relation 725732. Up to 32876 conditions per place. [2023-08-30 12:42:41,188 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1370 selfloop transitions, 3645 changer transitions 0/5016 dead transitions. [2023-08-30 12:42:41,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 5016 transitions, 128780 flow [2023-08-30 12:42:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 12:42:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 12:42:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9981 transitions. [2023-08-30 12:42:41,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596638655462186 [2023-08-30 12:42:41,198 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9981 transitions. [2023-08-30 12:42:41,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9981 transitions. [2023-08-30 12:42:41,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:42:41,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9981 transitions. [2023-08-30 12:42:41,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.5857142857143) internal successors, (9981), 70 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:42:41,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:42:41,227 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:42:41,228 INFO L175 Difference]: Start difference. First operand has 460 places, 2817 transitions, 74685 flow. Second operand 70 states and 9981 transitions. [2023-08-30 12:42:41,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 5016 transitions, 128780 flow [2023-08-30 12:43:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 5016 transitions, 123649 flow, removed 2059 selfloop flow, removed 9 redundant places. [2023-08-30 12:43:10,341 INFO L231 Difference]: Finished difference. Result has 552 places, 4363 transitions, 123808 flow [2023-08-30 12:43:10,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71046, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=123808, PETRI_PLACES=552, PETRI_TRANSITIONS=4363} [2023-08-30 12:43:10,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2023-08-30 12:43:10,344 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 4363 transitions, 123808 flow [2023-08-30 12:43:10,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:43:10,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:43:10,345 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:43:10,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 12:43:10,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:43:10,546 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:43:10,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:43:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2019786691, now seen corresponding path program 6 times [2023-08-30 12:43:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:43:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133906687] [2023-08-30 12:43:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:43:10,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:43:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:43:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 1 proven. 690 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 12:43:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:43:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133906687] [2023-08-30 12:43:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133906687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:43:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855658646] [2023-08-30 12:43:11,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 12:43:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:43:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:43:11,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:43:11,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 12:43:13,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-08-30 12:43:13,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:43:13,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 12:43:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:43:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:43:14,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:43:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:43:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855658646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:43:14,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:43:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 53 [2023-08-30 12:43:14,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734289730] [2023-08-30 12:43:14,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:43:14,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-30 12:43:14,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:43:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-30 12:43:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2023-08-30 12:43:14,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:43:14,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 4363 transitions, 123808 flow. Second operand has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:43:14,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:43:14,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:43:14,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand