./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:33:32,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:33:32,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:33:32,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:33:32,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:33:32,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:33:32,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:33:32,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:33:32,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:33:32,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:33:32,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:33:32,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:33:32,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:33:32,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:33:32,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:33:32,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:33:32,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:33:32,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:33:32,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:33:32,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:33:32,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:33:32,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:33:32,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:33:32,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:33:32,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:33:32,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:33:32,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:33:32,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:33:32,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:33:32,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:33:32,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:33:32,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:33:32,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:33:32,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:33:32,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:33:32,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:33:32,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:33:32,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:33:32,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:33:32,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:33:32,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:33:32,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:33:32,459 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:33:32,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:33:32,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:33:32,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:33:32,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:33:32,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:33:32,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:33:32,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:33:32,462 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:33:32,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:33:32,463 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:33:32,463 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:33:32,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:33:32,464 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:33:32,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:33:32,465 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:33:32,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:33:32,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:33:32,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:33:32,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:33:32,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:33:32,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:33:32,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:33:32,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:33:32,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:33:32,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:33:32,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:33:32,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:33:32,467 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:33:32,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:33:32,467 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:33:32,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:33:32,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:33:32,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:33:32,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:33:32,715 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:33:32,715 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:33:32,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-30 15:33:33,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:33:33,724 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:33:33,725 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-30 15:33:33,729 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a399240a/56aedd9c22014b7884206d443e0e9a37/FLAG1b71037cf [2023-08-30 15:33:34,123 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a399240a/56aedd9c22014b7884206d443e0e9a37 [2023-08-30 15:33:34,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:33:34,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:33:34,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:33:34,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:33:34,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:33:34,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e9ce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34, skipping insertion in model container [2023-08-30 15:33:34,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:33:34,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:33:34,251 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2023-08-30 15:33:34,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:33:34,261 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:33:34,279 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2023-08-30 15:33:34,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:33:34,286 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:33:34,286 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:33:34,290 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:33:34,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34 WrapperNode [2023-08-30 15:33:34,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:33:34,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:33:34,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:33:34,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:33:34,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,316 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 145 [2023-08-30 15:33:34,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:33:34,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:33:34,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:33:34,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:33:34,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:33:34,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:33:34,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:33:34,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:33:34,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (1/1) ... [2023-08-30 15:33:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:33:34,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:34,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:33:34,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:33:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:33:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:33:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:33:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:33:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:33:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:33:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:33:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:33:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:33:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:33:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:33:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:33:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:33:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:33:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:33:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:33:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:33:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:33:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:33:34,410 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:33:34,485 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:33:34,486 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:33:34,792 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:33:34,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:33:34,902 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:33:34,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:33:34 BoogieIcfgContainer [2023-08-30 15:33:34,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:33:34,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:33:34,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:33:34,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:33:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:33:34" (1/3) ... [2023-08-30 15:33:34,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b49aa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:33:34, skipping insertion in model container [2023-08-30 15:33:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:33:34" (2/3) ... [2023-08-30 15:33:34,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b49aa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:33:34, skipping insertion in model container [2023-08-30 15:33:34,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:33:34" (3/3) ... [2023-08-30 15:33:34,925 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2023-08-30 15:33:34,930 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:33:34,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:33:34,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 15:33:34,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:33:35,014 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:33:35,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 15:33:35,085 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 15:33:35,085 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:33:35,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 176 events. 12/176 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 15:33:35,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 180 transitions, 392 flow [2023-08-30 15:33:35,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 156 transitions, 333 flow [2023-08-30 15:33:35,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:33:35,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 15:33:35,102 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 156 transitions, 333 flow [2023-08-30 15:33:35,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 156 transitions, 333 flow [2023-08-30 15:33:35,132 INFO L130 PetriNetUnfolder]: 11/156 cut-off events. [2023-08-30 15:33:35,132 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:33:35,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 156 events. 11/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-08-30 15:33:35,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2023-08-30 15:33:40,555 INFO L134 LiptonReduction]: Checked pairs total: 5813 [2023-08-30 15:33:40,555 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 15:33:40,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:33:40,569 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;@144e6cc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:33:40,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-30 15:33:40,571 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:33:40,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:33:40,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:40,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:33:40,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:40,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 24265, now seen corresponding path program 1 times [2023-08-30 15:33:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702680763] [2023-08-30 15:33:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702680763] [2023-08-30 15:33:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702680763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:40,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:33:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:33:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077958201] [2023-08-30 15:33:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:33:40,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:33:40,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:40,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:40,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:33:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:42,262 INFO L130 PetriNetUnfolder]: 14867/19013 cut-off events. [2023-08-30 15:33:42,263 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-30 15:33:42,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39302 conditions, 19013 events. 14867/19013 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 95418 event pairs, 10390 based on Foata normal form. 0/8955 useless extension candidates. Maximal degree in co-relation 17376. Up to 9497 conditions per place. [2023-08-30 15:33:42,356 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:33:42,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 336 flow [2023-08-30 15:33:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 15:33:42,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53596757852077 [2023-08-30 15:33:42,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 15:33:42,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 15:33:42,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:42,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 15:33:42,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:42,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:42,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:42,386 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 103 flow. Second operand 3 states and 529 transitions. [2023-08-30 15:33:42,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 336 flow [2023-08-30 15:33:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:33:42,437 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-08-30 15:33:42,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 15:33:42,442 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 15:33:42,442 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-08-30 15:33:42,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:42,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:42,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:33:42,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:33:42,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:42,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash 753399, now seen corresponding path program 1 times [2023-08-30 15:33:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703738576] [2023-08-30 15:33:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:42,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:42,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703738576] [2023-08-30 15:33:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703738576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242287821] [2023-08-30 15:33:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:42,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:42,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:33:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:42,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:33:42,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:42,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:33:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242287821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:33:42,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:33:42,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:33:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784713321] [2023-08-30 15:33:42,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:33:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:33:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:33:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:33:42,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:33:42,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:42,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:42,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:33:42,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:45,452 INFO L130 PetriNetUnfolder]: 37169/47531 cut-off events. [2023-08-30 15:33:45,452 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:33:45,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97393 conditions, 47531 events. 37169/47531 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 261251 event pairs, 25975 based on Foata normal form. 0/22418 useless extension candidates. Maximal degree in co-relation 77911. Up to 9496 conditions per place. [2023-08-30 15:33:45,660 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 172 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2023-08-30 15:33:45,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 182 transitions, 790 flow [2023-08-30 15:33:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:33:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:33:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1234 transitions. [2023-08-30 15:33:45,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358228397742075 [2023-08-30 15:33:45,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1234 transitions. [2023-08-30 15:33:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1234 transitions. [2023-08-30 15:33:45,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:45,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1234 transitions. [2023-08-30 15:33:45,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.28571428571428) internal successors, (1234), 7 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:45,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:45,671 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:45,671 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 7 states and 1234 transitions. [2023-08-30 15:33:45,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 182 transitions, 790 flow [2023-08-30 15:33:45,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:33:45,674 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 157 flow [2023-08-30 15:33:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-30 15:33:45,675 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 15:33:45,675 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 157 flow [2023-08-30 15:33:45,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.14285714285714) internal successors, (1058), 7 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:45,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:45,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:33:45,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:33:45,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:45,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:45,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 23356105, now seen corresponding path program 1 times [2023-08-30 15:33:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445311875] [2023-08-30 15:33:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:33:45,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445311875] [2023-08-30 15:33:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445311875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:33:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:33:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683443760] [2023-08-30 15:33:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:33:45,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 329 [2023-08-30 15:33:45,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:45,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:45,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 329 [2023-08-30 15:33:45,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:48,273 INFO L130 PetriNetUnfolder]: 37166/47527 cut-off events. [2023-08-30 15:33:48,273 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:33:48,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97395 conditions, 47527 events. 37166/47527 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 264708 event pairs, 25975 based on Foata normal form. 2/22349 useless extension candidates. Maximal degree in co-relation 58427. Up to 47467 conditions per place. [2023-08-30 15:33:48,460 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 15:33:48,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 212 flow [2023-08-30 15:33:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 15:33:48,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-30 15:33:48,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 15:33:48,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 15:33:48,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:48,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 15:33:48,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:48,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:48,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:48,466 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 157 flow. Second operand 3 states and 488 transitions. [2023-08-30 15:33:48,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 212 flow [2023-08-30 15:33:48,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 204 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:33:48,468 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 124 flow [2023-08-30 15:33:48,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=124, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 15:33:48,469 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:33:48,469 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 124 flow [2023-08-30 15:33:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:48,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:48,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:33:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:33:48,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:48,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash 966793443, now seen corresponding path program 1 times [2023-08-30 15:33:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233551245] [2023-08-30 15:33:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233551245] [2023-08-30 15:33:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233551245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:48,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:33:48,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:33:48,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523821777] [2023-08-30 15:33:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:48,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:33:48,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:33:48,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 124 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 15:33:48,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:48,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:33:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:52,175 INFO L130 PetriNetUnfolder]: 52386/67057 cut-off events. [2023-08-30 15:33:52,191 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:33:52,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137243 conditions, 67057 events. 52386/67057 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 395826 event pairs, 25985 based on Foata normal form. 0/31657 useless extension candidates. Maximal degree in co-relation 137231. Up to 47478 conditions per place. [2023-08-30 15:33:52,465 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 15:33:52,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 325 flow [2023-08-30 15:33:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 15:33:52,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268490374873354 [2023-08-30 15:33:52,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 15:33:52,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 15:33:52,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:52,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 15:33:52,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:52,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:52,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:52,470 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 124 flow. Second operand 3 states and 520 transitions. [2023-08-30 15:33:52,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 325 flow [2023-08-30 15:33:52,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:33:52,471 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 137 flow [2023-08-30 15:33:52,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=137, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-08-30 15:33:52,472 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 15:33:52,472 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 137 flow [2023-08-30 15:33:52,473 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 15:33:52,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:52,473 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:33:52,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:33:52,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:52,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:52,474 INFO L85 PathProgramCache]: Analyzing trace with hash 970417879, now seen corresponding path program 2 times [2023-08-30 15:33:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:52,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865192111] [2023-08-30 15:33:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:52,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:52,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865192111] [2023-08-30 15:33:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865192111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568593686] [2023-08-30 15:33:52,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:33:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:52,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:52,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:52,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:33:52,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:33:52,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:33:52,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:33:52,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:33:52,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:33:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568593686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:33:52,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:33:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791247838] [2023-08-30 15:33:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:52,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:33:52,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:33:52,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 137 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 15:33:52,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:52,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:33:52,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:56,190 INFO L130 PetriNetUnfolder]: 52246/66916 cut-off events. [2023-08-30 15:33:56,191 INFO L131 PetriNetUnfolder]: For 7468/7468 co-relation queries the response was YES. [2023-08-30 15:33:56,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145938 conditions, 66916 events. 52246/66916 cut-off events. For 7468/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3654. Compared 388168 event pairs, 37005 based on Foata normal form. 1/34577 useless extension candidates. Maximal degree in co-relation 145925. Up to 66836 conditions per place. [2023-08-30 15:33:56,478 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 15:33:56,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 209 flow [2023-08-30 15:33:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 15:33:56,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-08-30 15:33:56,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 15:33:56,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 15:33:56,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:56,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 15:33:56,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:56,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:56,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:56,483 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 137 flow. Second operand 3 states and 490 transitions. [2023-08-30 15:33:56,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 209 flow [2023-08-30 15:33:56,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 197 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:33:56,488 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 117 flow [2023-08-30 15:33:56,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=117, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-30 15:33:56,488 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 15:33:56,488 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 117 flow [2023-08-30 15:33:56,489 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 15:33:56,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:56,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:56,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:33:56,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:56,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:33:56,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:33:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash -94173660, now seen corresponding path program 1 times [2023-08-30 15:33:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:33:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296483539] [2023-08-30 15:33:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:33:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:33:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:33:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296483539] [2023-08-30 15:33:56,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296483539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:33:56,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504529353] [2023-08-30 15:33:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:33:56,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:33:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:33:56,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:33:56,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:33:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:33:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:33:56,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:33:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:33:56,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:33:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504529353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:33:56,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:33:56,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 15:33:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875187353] [2023-08-30 15:33:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:33:56,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:33:56,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:33:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:33:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:33:56,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 329 [2023-08-30 15:33:56,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:56,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:33:56,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 329 [2023-08-30 15:33:56,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:33:59,721 INFO L130 PetriNetUnfolder]: 41797/53534 cut-off events. [2023-08-30 15:33:59,721 INFO L131 PetriNetUnfolder]: For 3576/3576 co-relation queries the response was YES. [2023-08-30 15:33:59,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115549 conditions, 53534 events. 41797/53534 cut-off events. For 3576/3576 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 304000 event pairs, 29604 based on Foata normal form. 1/27663 useless extension candidates. Maximal degree in co-relation 115539. Up to 53470 conditions per place. [2023-08-30 15:33:59,925 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 15:33:59,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 199 flow [2023-08-30 15:33:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:33:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:33:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 15:33:59,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49138804457953394 [2023-08-30 15:33:59,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 15:33:59,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 15:33:59,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:33:59,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 15:33:59,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:59,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:59,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:59,930 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 117 flow. Second operand 3 states and 485 transitions. [2023-08-30 15:33:59,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 199 flow [2023-08-30 15:33:59,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:33:59,933 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 122 flow [2023-08-30 15:33:59,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 15:33:59,933 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:33:59,934 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 122 flow [2023-08-30 15:33:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:33:59,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:33:59,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:33:59,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:34:00,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:00,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:00,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 451344900, now seen corresponding path program 1 times [2023-08-30 15:34:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943860464] [2023-08-30 15:34:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943860464] [2023-08-30 15:34:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943860464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281499410] [2023-08-30 15:34:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:00,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:00,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:34:00,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:34:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:00,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:34:00,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:00,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:00,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281499410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:00,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:34:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43517840] [2023-08-30 15:34:00,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:34:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:34:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:34:00,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:34:00,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 122 flow. Second operand has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:00,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:00,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:34:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:03,956 INFO L130 PetriNetUnfolder]: 45473/58508 cut-off events. [2023-08-30 15:34:03,956 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-08-30 15:34:04,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126464 conditions, 58508 events. 45473/58508 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 350697 event pairs, 9888 based on Foata normal form. 212/31818 useless extension candidates. Maximal degree in co-relation 126452. Up to 16907 conditions per place. [2023-08-30 15:34:04,190 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 230 selfloop transitions, 14 changer transitions 0/245 dead transitions. [2023-08-30 15:34:04,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 245 transitions, 1075 flow [2023-08-30 15:34:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:34:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:34:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2091 transitions. [2023-08-30 15:34:04,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888940846387655 [2023-08-30 15:34:04,194 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2091 transitions. [2023-08-30 15:34:04,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2091 transitions. [2023-08-30 15:34:04,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:04,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2091 transitions. [2023-08-30 15:34:04,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.84615384615384) internal successors, (2091), 13 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:04,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:04,202 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:04,202 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 122 flow. Second operand 13 states and 2091 transitions. [2023-08-30 15:34:04,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 245 transitions, 1075 flow [2023-08-30 15:34:04,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 245 transitions, 1071 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:04,206 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 236 flow [2023-08-30 15:34:04,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 15:34:04,207 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 15:34:04,207 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 236 flow [2023-08-30 15:34:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.69230769230768) internal successors, (1855), 13 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:04,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:04,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:04,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:34:04,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:04,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:04,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1267936693, now seen corresponding path program 1 times [2023-08-30 15:34:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638648375] [2023-08-30 15:34:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638648375] [2023-08-30 15:34:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638648375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:04,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:34:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25910288] [2023-08-30 15:34:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:04,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:04,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:34:04,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:04,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:04,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:34:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:09,143 INFO L130 PetriNetUnfolder]: 61647/79404 cut-off events. [2023-08-30 15:34:09,144 INFO L131 PetriNetUnfolder]: For 164740/164779 co-relation queries the response was YES. [2023-08-30 15:34:09,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223432 conditions, 79404 events. 61647/79404 cut-off events. For 164740/164779 co-relation queries the response was YES. Maximal size of possible extension queue 3821. Compared 481227 event pairs, 31779 based on Foata normal form. 1308/51100 useless extension candidates. Maximal degree in co-relation 223411. Up to 58370 conditions per place. [2023-08-30 15:34:09,762 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 83 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 15:34:09,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 562 flow [2023-08-30 15:34:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 15:34:09,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-30 15:34:09,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 15:34:09,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 15:34:09,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:09,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 15:34:09,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:09,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:09,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:09,766 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 236 flow. Second operand 3 states and 517 transitions. [2023-08-30 15:34:09,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 562 flow [2023-08-30 15:34:09,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 538 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 15:34:09,862 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 234 flow [2023-08-30 15:34:09,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-30 15:34:09,863 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 15:34:09,863 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 234 flow [2023-08-30 15:34:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:09,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:09,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:34:09,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:09,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1364116737, now seen corresponding path program 1 times [2023-08-30 15:34:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82804072] [2023-08-30 15:34:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:34:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82804072] [2023-08-30 15:34:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82804072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74949395] [2023-08-30 15:34:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:09,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:09,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:09,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:34:09,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:34:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:09,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:34:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:10,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74949395] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:10,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-08-30 15:34:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553378284] [2023-08-30 15:34:10,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:34:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:34:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-30 15:34:10,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:34:10,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 234 flow. Second operand has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:10,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:10,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:34:10,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:14,820 INFO L130 PetriNetUnfolder]: 50781/65812 cut-off events. [2023-08-30 15:34:14,820 INFO L131 PetriNetUnfolder]: For 104034/104041 co-relation queries the response was YES. [2023-08-30 15:34:14,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180418 conditions, 65812 events. 50781/65812 cut-off events. For 104034/104041 co-relation queries the response was YES. Maximal size of possible extension queue 3057. Compared 409413 event pairs, 6276 based on Foata normal form. 3556/47432 useless extension candidates. Maximal degree in co-relation 180396. Up to 8372 conditions per place. [2023-08-30 15:34:15,167 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 412 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2023-08-30 15:34:15,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 434 transitions, 2243 flow [2023-08-30 15:34:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 15:34:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 15:34:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3530 transitions. [2023-08-30 15:34:15,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487703785576126 [2023-08-30 15:34:15,172 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3530 transitions. [2023-08-30 15:34:15,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3530 transitions. [2023-08-30 15:34:15,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:15,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3530 transitions. [2023-08-30 15:34:15,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.45454545454547) internal successors, (3530), 22 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:15,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:15,184 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 329.0) internal successors, (7567), 23 states have internal predecessors, (7567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:15,184 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 234 flow. Second operand 22 states and 3530 transitions. [2023-08-30 15:34:15,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 434 transitions, 2243 flow [2023-08-30 15:34:15,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 434 transitions, 2191 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:15,633 INFO L231 Difference]: Finished difference. Result has 94 places, 57 transitions, 320 flow [2023-08-30 15:34:15,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=320, PETRI_PLACES=94, PETRI_TRANSITIONS=57} [2023-08-30 15:34:15,634 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 15:34:15,634 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 57 transitions, 320 flow [2023-08-30 15:34:15,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.5) internal successors, (2565), 18 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:15,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:15,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:15,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:34:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:15,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:15,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash 656148694, now seen corresponding path program 1 times [2023-08-30 15:34:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998063034] [2023-08-30 15:34:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:15,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:15,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998063034] [2023-08-30 15:34:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998063034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:15,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:34:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656844433] [2023-08-30 15:34:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:15,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:15,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:15,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:34:15,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 57 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:15,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:15,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:34:15,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:21,282 INFO L130 PetriNetUnfolder]: 64549/87410 cut-off events. [2023-08-30 15:34:21,282 INFO L131 PetriNetUnfolder]: For 233846/233846 co-relation queries the response was YES. [2023-08-30 15:34:21,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252923 conditions, 87410 events. 64549/87410 cut-off events. For 233846/233846 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 539374 event pairs, 36946 based on Foata normal form. 1016/65540 useless extension candidates. Maximal degree in co-relation 252895. Up to 57203 conditions per place. [2023-08-30 15:34:21,828 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 95 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-08-30 15:34:21,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 731 flow [2023-08-30 15:34:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 15:34:21,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2023-08-30 15:34:21,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 15:34:21,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 15:34:21,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:21,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 15:34:21,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:21,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:21,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:21,832 INFO L175 Difference]: Start difference. First operand has 94 places, 57 transitions, 320 flow. Second operand 3 states and 516 transitions. [2023-08-30 15:34:21,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 731 flow [2023-08-30 15:34:22,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 679 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 15:34:22,129 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 301 flow [2023-08-30 15:34:22,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2023-08-30 15:34:22,130 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-08-30 15:34:22,130 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 301 flow [2023-08-30 15:34:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:22,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:22,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:22,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:34:22,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:22,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash 656148619, now seen corresponding path program 1 times [2023-08-30 15:34:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:22,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183921977] [2023-08-30 15:34:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:22,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183921977] [2023-08-30 15:34:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183921977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437150464] [2023-08-30 15:34:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:22,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:34:22,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:34:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:22,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 15:34:22,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:22,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:34:22,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:22,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:22,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:22,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:22,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:22,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:22,718 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_439 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:34:22,730 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int)) (v_ArrVal_439 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_438) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_439) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-30 15:34:22,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:22,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 15:34:22,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:22,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 271 [2023-08-30 15:34:22,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-08-30 15:34:22,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-08-30 15:34:22,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2023-08-30 15:34:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437150464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:22,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:34:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325116904] [2023-08-30 15:34:22,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:22,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:34:22,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:34:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=216, Unknown=4, NotChecked=62, Total=342 [2023-08-30 15:34:22,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:34:22,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 301 flow. Second operand has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:22,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:22,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:34:22,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:29,287 INFO L130 PetriNetUnfolder]: 70875/97186 cut-off events. [2023-08-30 15:34:29,287 INFO L131 PetriNetUnfolder]: For 220528/220528 co-relation queries the response was YES. [2023-08-30 15:34:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291506 conditions, 97186 events. 70875/97186 cut-off events. For 220528/220528 co-relation queries the response was YES. Maximal size of possible extension queue 3038. Compared 620661 event pairs, 20864 based on Foata normal form. 0/77944 useless extension candidates. Maximal degree in co-relation 291477. Up to 76327 conditions per place. [2023-08-30 15:34:29,943 INFO L137 encePairwiseOnDemand]: 320/329 looper letters, 166 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-08-30 15:34:29,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 180 transitions, 1393 flow [2023-08-30 15:34:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:34:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:34:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1036 transitions. [2023-08-30 15:34:29,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39361702127659576 [2023-08-30 15:34:29,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1036 transitions. [2023-08-30 15:34:29,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1036 transitions. [2023-08-30 15:34:29,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:29,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1036 transitions. [2023-08-30 15:34:29,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.5) internal successors, (1036), 8 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:29,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:29,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:29,953 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 301 flow. Second operand 8 states and 1036 transitions. [2023-08-30 15:34:29,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 180 transitions, 1393 flow [2023-08-30 15:34:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 180 transitions, 1389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:34:30,183 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 384 flow [2023-08-30 15:34:30,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=97, PETRI_TRANSITIONS=64} [2023-08-30 15:34:30,183 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-30 15:34:30,183 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 384 flow [2023-08-30 15:34:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:30,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:30,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:30,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:34:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:30,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:30,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash 651333432, now seen corresponding path program 1 times [2023-08-30 15:34:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:30,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748097397] [2023-08-30 15:34:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748097397] [2023-08-30 15:34:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748097397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:34:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526760329] [2023-08-30 15:34:30,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:30,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:30,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:34:30,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 64 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:30,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:30,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:34:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:35,924 INFO L130 PetriNetUnfolder]: 59377/82272 cut-off events. [2023-08-30 15:34:35,925 INFO L131 PetriNetUnfolder]: For 193629/194293 co-relation queries the response was YES. [2023-08-30 15:34:36,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257568 conditions, 82272 events. 59377/82272 cut-off events. For 193629/194293 co-relation queries the response was YES. Maximal size of possible extension queue 2667. Compared 549778 event pairs, 12792 based on Foata normal form. 664/75412 useless extension candidates. Maximal degree in co-relation 257536. Up to 61338 conditions per place. [2023-08-30 15:34:36,485 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 99 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-30 15:34:36,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 825 flow [2023-08-30 15:34:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-30 15:34:36,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-08-30 15:34:36,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-30 15:34:36,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-30 15:34:36,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:36,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-30 15:34:36,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:36,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:36,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:36,488 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 384 flow. Second operand 3 states and 507 transitions. [2023-08-30 15:34:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 825 flow [2023-08-30 15:34:36,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 819 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:36,644 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 376 flow [2023-08-30 15:34:36,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=94, 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=376, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-08-30 15:34:36,644 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-30 15:34:36,644 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 376 flow [2023-08-30 15:34:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:36,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:36,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:36,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:34:36,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:36,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 751289635, now seen corresponding path program 2 times [2023-08-30 15:34:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:36,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181311773] [2023-08-30 15:34:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:34:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181311773] [2023-08-30 15:34:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181311773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624583082] [2023-08-30 15:34:36,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:34:36,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:36,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:34:36,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:34:36,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:34:36,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:34:36,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:34:36,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 15:34:36,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:34:36,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624583082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:36,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:34:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:34:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872472327] [2023-08-30 15:34:36,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:36,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:36,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:34:36,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:34:36,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 376 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 15:34:36,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:36,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:34:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:40,903 INFO L130 PetriNetUnfolder]: 47142/65041 cut-off events. [2023-08-30 15:34:40,903 INFO L131 PetriNetUnfolder]: For 185286/185804 co-relation queries the response was YES. [2023-08-30 15:34:41,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184881 conditions, 65041 events. 47142/65041 cut-off events. For 185286/185804 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 396130 event pairs, 39736 based on Foata normal form. 2150/62192 useless extension candidates. Maximal degree in co-relation 184850. Up to 64938 conditions per place. [2023-08-30 15:34:41,361 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 56 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 15:34:41,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 59 transitions, 403 flow [2023-08-30 15:34:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-30 15:34:41,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49341438703140833 [2023-08-30 15:34:41,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-30 15:34:41,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-30 15:34:41,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:41,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-30 15:34:41,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:41,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:41,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:41,364 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 376 flow. Second operand 3 states and 487 transitions. [2023-08-30 15:34:41,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 59 transitions, 403 flow [2023-08-30 15:34:41,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 59 transitions, 384 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 15:34:41,416 INFO L231 Difference]: Finished difference. Result has 86 places, 59 transitions, 272 flow [2023-08-30 15:34:41,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2023-08-30 15:34:41,419 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-30 15:34:41,420 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 272 flow [2023-08-30 15:34:41,420 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 15:34:41,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:41,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:41,424 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 15:34:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:41,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:41,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1134225228, now seen corresponding path program 1 times [2023-08-30 15:34:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239810861] [2023-08-30 15:34:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:41,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239810861] [2023-08-30 15:34:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239810861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230190258] [2023-08-30 15:34:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:41,675 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 15:34:41,676 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 15:34:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:41,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:34:41,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:41,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:41,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230190258] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:41,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:41,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:34:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026212096] [2023-08-30 15:34:41,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:34:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:41,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:34:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:34:42,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:34:42,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 272 flow. Second operand has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:42,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:42,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:34:42,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:45,369 INFO L130 PetriNetUnfolder]: 38697/52602 cut-off events. [2023-08-30 15:34:45,369 INFO L131 PetriNetUnfolder]: For 50429/50429 co-relation queries the response was YES. [2023-08-30 15:34:45,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147903 conditions, 52602 events. 38697/52602 cut-off events. For 50429/50429 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 304074 event pairs, 10238 based on Foata normal form. 2736/51602 useless extension candidates. Maximal degree in co-relation 147879. Up to 13944 conditions per place. [2023-08-30 15:34:45,816 INFO L137 encePairwiseOnDemand]: 321/329 looper letters, 240 selfloop transitions, 15 changer transitions 4/259 dead transitions. [2023-08-30 15:34:45,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 259 transitions, 1544 flow [2023-08-30 15:34:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:34:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:34:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1885 transitions. [2023-08-30 15:34:45,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774569402228977 [2023-08-30 15:34:45,819 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1885 transitions. [2023-08-30 15:34:45,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1885 transitions. [2023-08-30 15:34:45,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:45,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1885 transitions. [2023-08-30 15:34:45,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.08333333333334) internal successors, (1885), 12 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:45,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:45,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:45,825 INFO L175 Difference]: Start difference. First operand has 86 places, 59 transitions, 272 flow. Second operand 12 states and 1885 transitions. [2023-08-30 15:34:45,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 259 transitions, 1544 flow [2023-08-30 15:34:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 259 transitions, 1533 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:45,868 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 323 flow [2023-08-30 15:34:45,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=323, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2023-08-30 15:34:45,869 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 15:34:45,869 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 323 flow [2023-08-30 15:34:45,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.15384615384616) internal successors, (1861), 13 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:45,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:45,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:45,874 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 15:34:46,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:34:46,070 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:46,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:46,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1134226047, now seen corresponding path program 1 times [2023-08-30 15:34:46,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510586337] [2023-08-30 15:34:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:46,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:46,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510586337] [2023-08-30 15:34:46,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510586337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:46,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146079639] [2023-08-30 15:34:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:46,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:46,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:46,352 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 15:34:46,354 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 15:34:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:46,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 15:34:46,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:46,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:34:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:46,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:46,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:46,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:46,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:46,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:46,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:34:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:46,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:46,651 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_651 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_651) c_~A~0.base) (+ c_~A~0.offset (* |c_thread3Thread1of1ForFork1_~i~2#1| 4)))))) is different from false [2023-08-30 15:34:46,657 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_651 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_651) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:34:46,663 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_650) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_651) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:34:46,677 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_650) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_651) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:34:46,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:46,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-30 15:34:46,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:46,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-08-30 15:34:46,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-08-30 15:34:46,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 123 [2023-08-30 15:34:46,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-08-30 15:34:46,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2023-08-30 15:34:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146079639] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:46,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:46,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 15:34:46,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201373821] [2023-08-30 15:34:46,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 15:34:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 15:34:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=246, Unknown=8, NotChecked=140, Total=462 [2023-08-30 15:34:46,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:34:46,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 323 flow. Second operand has 22 states, 22 states have (on average 115.45454545454545) internal successors, (2540), 22 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:46,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:46,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:34:46,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:49,683 INFO L130 PetriNetUnfolder]: 33545/45662 cut-off events. [2023-08-30 15:34:49,683 INFO L131 PetriNetUnfolder]: For 50538/50538 co-relation queries the response was YES. [2023-08-30 15:34:49,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138755 conditions, 45662 events. 33545/45662 cut-off events. For 50538/50538 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 256419 event pairs, 17088 based on Foata normal form. 1788/44250 useless extension candidates. Maximal degree in co-relation 138730. Up to 30140 conditions per place. [2023-08-30 15:34:49,947 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 83 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2023-08-30 15:34:49,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 652 flow [2023-08-30 15:34:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:34:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:34:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2023-08-30 15:34:49,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738601823708207 [2023-08-30 15:34:49,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2023-08-30 15:34:49,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2023-08-30 15:34:49,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:49,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2023-08-30 15:34:49,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:49,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:49,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:49,951 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 323 flow. Second operand 6 states and 738 transitions. [2023-08-30 15:34:49,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 652 flow [2023-08-30 15:34:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 631 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 15:34:51,411 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 338 flow [2023-08-30 15:34:51,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2023-08-30 15:34:51,411 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-30 15:34:51,411 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 338 flow [2023-08-30 15:34:51,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 115.45454545454545) internal successors, (2540), 22 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:51,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:51,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:51,420 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 15:34:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:34:51,613 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:51,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1134089444, now seen corresponding path program 1 times [2023-08-30 15:34:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657097449] [2023-08-30 15:34:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:51,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657097449] [2023-08-30 15:34:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657097449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:51,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:51,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:34:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852729819] [2023-08-30 15:34:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:51,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:51,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2023-08-30 15:34:51,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:51,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:51,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2023-08-30 15:34:51,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:54,279 INFO L130 PetriNetUnfolder]: 32432/43858 cut-off events. [2023-08-30 15:34:54,279 INFO L131 PetriNetUnfolder]: For 56944/60064 co-relation queries the response was YES. [2023-08-30 15:34:54,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137366 conditions, 43858 events. 32432/43858 cut-off events. For 56944/60064 co-relation queries the response was YES. Maximal size of possible extension queue 1616. Compared 259990 event pairs, 7365 based on Foata normal form. 3120/44208 useless extension candidates. Maximal degree in co-relation 137339. Up to 40110 conditions per place. [2023-08-30 15:34:54,523 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 94 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-30 15:34:54,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 719 flow [2023-08-30 15:34:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-30 15:34:54,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086119554204661 [2023-08-30 15:34:54,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-30 15:34:54,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-30 15:34:54,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:54,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-30 15:34:54,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:54,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:54,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:54,527 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 338 flow. Second operand 3 states and 502 transitions. [2023-08-30 15:34:54,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 719 flow [2023-08-30 15:34:54,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 681 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 15:34:54,801 INFO L231 Difference]: Finished difference. Result has 94 places, 63 transitions, 318 flow [2023-08-30 15:34:54,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=94, PETRI_TRANSITIONS=63} [2023-08-30 15:34:54,801 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 15:34:54,802 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 63 transitions, 318 flow [2023-08-30 15:34:54,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:54,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:54,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:54,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:34:54,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:54,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash -797034824, now seen corresponding path program 1 times [2023-08-30 15:34:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505160769] [2023-08-30 15:34:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:34:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505160769] [2023-08-30 15:34:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505160769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:34:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:34:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:34:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969719827] [2023-08-30 15:34:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:34:54,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:34:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:34:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:34:54,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:34:54,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 63 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:54,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:54,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:34:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:34:57,438 INFO L130 PetriNetUnfolder]: 30661/41606 cut-off events. [2023-08-30 15:34:57,438 INFO L131 PetriNetUnfolder]: For 40882/43840 co-relation queries the response was YES. [2023-08-30 15:34:57,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131320 conditions, 41606 events. 30661/41606 cut-off events. For 40882/43840 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 246496 event pairs, 5356 based on Foata normal form. 3394/44916 useless extension candidates. Maximal degree in co-relation 131292. Up to 36000 conditions per place. [2023-08-30 15:34:57,685 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 79 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-30 15:34:57,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 87 transitions, 588 flow [2023-08-30 15:34:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:34:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:34:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 15:34:57,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 15:34:57,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 15:34:57,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 15:34:57,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:34:57,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 15:34:57,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:57,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:57,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:57,689 INFO L175 Difference]: Start difference. First operand has 94 places, 63 transitions, 318 flow. Second operand 3 states and 499 transitions. [2023-08-30 15:34:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 87 transitions, 588 flow [2023-08-30 15:34:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:34:57,915 INFO L231 Difference]: Finished difference. Result has 95 places, 63 transitions, 328 flow [2023-08-30 15:34:57,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=95, PETRI_TRANSITIONS=63} [2023-08-30 15:34:57,915 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2023-08-30 15:34:57,915 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 63 transitions, 328 flow [2023-08-30 15:34:57,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:57,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:34:57,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:34:57,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:34:57,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:34:57,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:34:57,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1342970953, now seen corresponding path program 1 times [2023-08-30 15:34:57,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:34:57,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353849432] [2023-08-30 15:34:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:57,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:34:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:34:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353849432] [2023-08-30 15:34:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353849432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:34:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985460889] [2023-08-30 15:34:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:34:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:34:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:34:58,428 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 15:34:58,432 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 15:34:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:34:58,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 15:34:58,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:34:58,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:34:58,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:34:58,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:58,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:34:58,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:34:58,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:34:58,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 15:34:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:34:58,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:34:58,752 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_780 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_780) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483650))) is different from false [2023-08-30 15:34:58,758 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_779 (Array Int Int)) (v_ArrVal_780 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_779) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_780) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483650))) is different from false [2023-08-30 15:34:58,766 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_779 (Array Int Int)) (v_ArrVal_778 (Array Int Int)) (v_ArrVal_780 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_778) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_779) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_780) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-08-30 15:34:58,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:58,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-30 15:34:58,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:34:58,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 151 [2023-08-30 15:34:58,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 122 [2023-08-30 15:34:58,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:34:58,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-30 15:34:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 15:34:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985460889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:34:58,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:34:58,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-30 15:34:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901490814] [2023-08-30 15:34:58,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:34:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 15:34:58,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:34:58,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 15:34:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=435, Unknown=3, NotChecked=132, Total=650 [2023-08-30 15:34:58,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:34:58,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 63 transitions, 328 flow. Second operand has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:34:58,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:34:58,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:34:58,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:02,046 INFO L130 PetriNetUnfolder]: 31243/42712 cut-off events. [2023-08-30 15:35:02,046 INFO L131 PetriNetUnfolder]: For 62805/62805 co-relation queries the response was YES. [2023-08-30 15:35:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137292 conditions, 42712 events. 31243/42712 cut-off events. For 62805/62805 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 236558 event pairs, 14116 based on Foata normal form. 144/42856 useless extension candidates. Maximal degree in co-relation 137263. Up to 31837 conditions per place. [2023-08-30 15:35:02,277 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 138 selfloop transitions, 11 changer transitions 1/150 dead transitions. [2023-08-30 15:35:02,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 1035 flow [2023-08-30 15:35:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-08-30 15:35:02,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39209726443769 [2023-08-30 15:35:02,279 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-08-30 15:35:02,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-08-30 15:35:02,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:02,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-08-30 15:35:02,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:02,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:02,282 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:02,282 INFO L175 Difference]: Start difference. First operand has 95 places, 63 transitions, 328 flow. Second operand 8 states and 1032 transitions. [2023-08-30 15:35:02,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 1035 flow [2023-08-30 15:35:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 150 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:35:02,404 INFO L231 Difference]: Finished difference. Result has 102 places, 67 transitions, 374 flow [2023-08-30 15:35:02,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=102, PETRI_TRANSITIONS=67} [2023-08-30 15:35:02,404 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2023-08-30 15:35:02,404 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 67 transitions, 374 flow [2023-08-30 15:35:02,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 118.38461538461539) internal successors, (3078), 26 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:02,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:02,405 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:02,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:02,610 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,SelfDestructingSolverStorable17 [2023-08-30 15:35:02,610 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:02,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1313383313, now seen corresponding path program 1 times [2023-08-30 15:35:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145103242] [2023-08-30 15:35:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145103242] [2023-08-30 15:35:02,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145103242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256530105] [2023-08-30 15:35:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:02,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:02,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:02,946 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 15:35:02,948 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 15:35:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 15:35:03,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:03,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:35:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:03,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:35:03,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:03,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:35:03,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:03,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:35:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:03,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:35:03,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 15:35:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:03,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:07,423 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_856) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2023-08-30 15:35:07,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:07,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-08-30 15:35:07,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:07,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1227 treesize of output 1203 [2023-08-30 15:35:07,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2023-08-30 15:35:07,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 15:35:07,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 238 [2023-08-30 15:35:07,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:35:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256530105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:07,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-30 15:35:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362242126] [2023-08-30 15:35:07,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 15:35:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 15:35:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=636, Unknown=16, NotChecked=52, Total=812 [2023-08-30 15:35:07,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:35:07,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 67 transitions, 374 flow. Second operand has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:07,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:07,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:35:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:11,930 INFO L130 PetriNetUnfolder]: 38795/53000 cut-off events. [2023-08-30 15:35:11,931 INFO L131 PetriNetUnfolder]: For 90605/90605 co-relation queries the response was YES. [2023-08-30 15:35:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175179 conditions, 53000 events. 38795/53000 cut-off events. For 90605/90605 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 305484 event pairs, 19312 based on Foata normal form. 1314/54314 useless extension candidates. Maximal degree in co-relation 175148. Up to 23628 conditions per place. [2023-08-30 15:35:12,252 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 136 selfloop transitions, 11 changer transitions 1/148 dead transitions. [2023-08-30 15:35:12,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 148 transitions, 996 flow [2023-08-30 15:35:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:35:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:35:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1016 transitions. [2023-08-30 15:35:12,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860182370820669 [2023-08-30 15:35:12,254 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1016 transitions. [2023-08-30 15:35:12,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1016 transitions. [2023-08-30 15:35:12,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:12,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1016 transitions. [2023-08-30 15:35:12,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:12,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:12,258 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:12,258 INFO L175 Difference]: Start difference. First operand has 102 places, 67 transitions, 374 flow. Second operand 8 states and 1016 transitions. [2023-08-30 15:35:12,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 148 transitions, 996 flow [2023-08-30 15:35:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 148 transitions, 977 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 15:35:12,423 INFO L231 Difference]: Finished difference. Result has 106 places, 68 transitions, 393 flow [2023-08-30 15:35:12,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=393, PETRI_PLACES=106, PETRI_TRANSITIONS=68} [2023-08-30 15:35:12,423 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2023-08-30 15:35:12,423 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 68 transitions, 393 flow [2023-08-30 15:35:12,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 115.34482758620689) internal successors, (3345), 29 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:12,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:12,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:12,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 15:35:12,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:12,629 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:12,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:12,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1317569429, now seen corresponding path program 2 times [2023-08-30 15:35:12,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:12,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546951774] [2023-08-30 15:35:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:12,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546951774] [2023-08-30 15:35:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546951774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839823038] [2023-08-30 15:35:12,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:35:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:12,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:12,717 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 15:35:12,719 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 15:35:12,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:35:12,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:12,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:35:12,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:12,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839823038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:12,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 15:35:12,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261831632] [2023-08-30 15:35:12,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:12,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:35:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:35:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-30 15:35:13,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:35:13,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 68 transitions, 393 flow. Second operand has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:13,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:13,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:35:13,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:16,915 INFO L130 PetriNetUnfolder]: 36951/50670 cut-off events. [2023-08-30 15:35:16,915 INFO L131 PetriNetUnfolder]: For 110668/110668 co-relation queries the response was YES. [2023-08-30 15:35:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172687 conditions, 50670 events. 36951/50670 cut-off events. For 110668/110668 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 298483 event pairs, 11672 based on Foata normal form. 972/51642 useless extension candidates. Maximal degree in co-relation 172656. Up to 19548 conditions per place. [2023-08-30 15:35:17,222 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 296 selfloop transitions, 22 changer transitions 12/330 dead transitions. [2023-08-30 15:35:17,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 330 transitions, 2066 flow [2023-08-30 15:35:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 15:35:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 15:35:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2669 transitions. [2023-08-30 15:35:17,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2023-08-30 15:35:17,225 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2669 transitions. [2023-08-30 15:35:17,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2669 transitions. [2023-08-30 15:35:17,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:17,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2669 transitions. [2023-08-30 15:35:17,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.0) internal successors, (2669), 17 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:17,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:17,231 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 329.0) internal successors, (5922), 18 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:17,231 INFO L175 Difference]: Start difference. First operand has 106 places, 68 transitions, 393 flow. Second operand 17 states and 2669 transitions. [2023-08-30 15:35:17,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 330 transitions, 2066 flow [2023-08-30 15:35:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 330 transitions, 2038 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 15:35:17,614 INFO L231 Difference]: Finished difference. Result has 121 places, 77 transitions, 522 flow [2023-08-30 15:35:17,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=522, PETRI_PLACES=121, PETRI_TRANSITIONS=77} [2023-08-30 15:35:17,614 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2023-08-30 15:35:17,614 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 522 flow [2023-08-30 15:35:17,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:17,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:17,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:17,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 15:35:17,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:17,820 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:17,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash -143849397, now seen corresponding path program 3 times [2023-08-30 15:35:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:17,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838424869] [2023-08-30 15:35:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:17,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:18,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:18,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838424869] [2023-08-30 15:35:18,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838424869] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:18,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785059573] [2023-08-30 15:35:18,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:35:18,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:18,190 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 15:35:18,192 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 15:35:18,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 15:35:18,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:18,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:35:18,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:18,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:18,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:18,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:18,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:18,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:18,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:18,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:35:18,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:35:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:18,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:20,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:20,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-30 15:35:20,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:20,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 151 [2023-08-30 15:35:20,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2023-08-30 15:35:20,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2023-08-30 15:35:20,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2023-08-30 15:35:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785059573] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:20,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 15:35:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837452205] [2023-08-30 15:35:20,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:20,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 15:35:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 15:35:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=753, Unknown=14, NotChecked=0, Total=870 [2023-08-30 15:35:21,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:35:21,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 77 transitions, 522 flow. Second operand has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:21,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:21,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:35:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:26,038 INFO L130 PetriNetUnfolder]: 37527/51438 cut-off events. [2023-08-30 15:35:26,038 INFO L131 PetriNetUnfolder]: For 126178/126178 co-relation queries the response was YES. [2023-08-30 15:35:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184050 conditions, 51438 events. 37527/51438 cut-off events. For 126178/126178 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 294357 event pairs, 20342 based on Foata normal form. 96/51534 useless extension candidates. Maximal degree in co-relation 184015. Up to 28489 conditions per place. [2023-08-30 15:35:26,370 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 167 selfloop transitions, 13 changer transitions 2/182 dead transitions. [2023-08-30 15:35:26,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1342 flow [2023-08-30 15:35:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:35:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:35:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1306 transitions. [2023-08-30 15:35:26,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39696048632218844 [2023-08-30 15:35:26,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1306 transitions. [2023-08-30 15:35:26,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1306 transitions. [2023-08-30 15:35:26,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:26,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1306 transitions. [2023-08-30 15:35:26,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.6) internal successors, (1306), 10 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:26,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:26,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:26,376 INFO L175 Difference]: Start difference. First operand has 121 places, 77 transitions, 522 flow. Second operand 10 states and 1306 transitions. [2023-08-30 15:35:26,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1342 flow [2023-08-30 15:35:26,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 1318 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 15:35:26,777 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 575 flow [2023-08-30 15:35:26,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=575, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2023-08-30 15:35:26,777 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-08-30 15:35:26,777 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 575 flow [2023-08-30 15:35:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 118.33333333333333) internal successors, (3550), 30 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:26,783 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 15:35:26,978 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,SelfDestructingSolverStorable20 [2023-08-30 15:35:26,978 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:26,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1381261288, now seen corresponding path program 1 times [2023-08-30 15:35:26,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:26,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334142895] [2023-08-30 15:35:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:35:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334142895] [2023-08-30 15:35:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334142895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:35:27,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:35:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:35:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975123677] [2023-08-30 15:35:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:35:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:35:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:35:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:35:27,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 329 [2023-08-30 15:35:27,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:27,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:27,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 329 [2023-08-30 15:35:27,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:30,756 INFO L130 PetriNetUnfolder]: 34583/47786 cut-off events. [2023-08-30 15:35:30,756 INFO L131 PetriNetUnfolder]: For 119915/121604 co-relation queries the response was YES. [2023-08-30 15:35:30,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 47786 events. 34583/47786 cut-off events. For 119915/121604 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 293970 event pairs, 8334 based on Foata normal form. 2145/49863 useless extension candidates. Maximal degree in co-relation 172175. Up to 37287 conditions per place. [2023-08-30 15:35:31,057 INFO L137 encePairwiseOnDemand]: 326/329 looper letters, 128 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-30 15:35:31,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1215 flow [2023-08-30 15:35:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:35:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:35:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 15:35:31,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055724417426545 [2023-08-30 15:35:31,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 15:35:31,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 15:35:31,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:31,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 15:35:31,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:31,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:31,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:31,060 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 575 flow. Second operand 3 states and 499 transitions. [2023-08-30 15:35:31,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1215 flow [2023-08-30 15:35:31,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 1168 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 15:35:31,252 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 552 flow [2023-08-30 15:35:31,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=125, PETRI_TRANSITIONS=82} [2023-08-30 15:35:31,252 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2023-08-30 15:35:31,252 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 552 flow [2023-08-30 15:35:31,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:31,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:31,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 15:35:31,253 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:31,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:31,253 INFO L85 PathProgramCache]: Analyzing trace with hash -165075007, now seen corresponding path program 2 times [2023-08-30 15:35:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364167519] [2023-08-30 15:35:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364167519] [2023-08-30 15:35:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364167519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256457471] [2023-08-30 15:35:31,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:35:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:31,620 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 15:35:31,620 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 15:35:31,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:35:31,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 15:35:31,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-08-30 15:35:31,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:31,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:31,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:31,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:35:31,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:35:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:32,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:32,088 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1123 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1123) c_~A~0.base) (+ c_~A~0.offset 8))))) is different from false [2023-08-30 15:35:32,159 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1123 (Array Int Int)) (v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int)) (v_ArrVal_1120 (Array Int Int))) (< 0 (+ (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1120) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1122) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1123) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483650))) is different from false [2023-08-30 15:35:32,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:32,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-08-30 15:35:32,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:32,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2451 treesize of output 2403 [2023-08-30 15:35:32,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 139 [2023-08-30 15:35:32,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 270 [2023-08-30 15:35:32,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 238 [2023-08-30 15:35:32,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:35:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-30 15:35:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256457471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:32,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 15:35:32,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495668589] [2023-08-30 15:35:32,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:32,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 15:35:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:32,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 15:35:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=764, Unknown=16, NotChecked=114, Total=992 [2023-08-30 15:35:32,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:35:32,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 82 transitions, 552 flow. Second operand has 32 states, 32 states have (on average 115.3125) internal successors, (3690), 32 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:32,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:32,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:35:32,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:37,567 INFO L130 PetriNetUnfolder]: 40849/56038 cut-off events. [2023-08-30 15:35:37,567 INFO L131 PetriNetUnfolder]: For 154973/154973 co-relation queries the response was YES. [2023-08-30 15:35:37,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207704 conditions, 56038 events. 40849/56038 cut-off events. For 154973/154973 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 328732 event pairs, 19698 based on Foata normal form. 840/56878 useless extension candidates. Maximal degree in co-relation 207665. Up to 15260 conditions per place. [2023-08-30 15:35:37,960 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 181 selfloop transitions, 13 changer transitions 2/196 dead transitions. [2023-08-30 15:35:37,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 196 transitions, 1396 flow [2023-08-30 15:35:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:35:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:35:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1294 transitions. [2023-08-30 15:35:37,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933130699088146 [2023-08-30 15:35:37,961 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1294 transitions. [2023-08-30 15:35:37,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1294 transitions. [2023-08-30 15:35:37,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:37,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1294 transitions. [2023-08-30 15:35:37,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.4) internal successors, (1294), 10 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:37,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:37,965 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:37,965 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 552 flow. Second operand 10 states and 1294 transitions. [2023-08-30 15:35:37,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 196 transitions, 1396 flow [2023-08-30 15:35:38,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 196 transitions, 1363 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 15:35:38,831 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 590 flow [2023-08-30 15:35:38,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2023-08-30 15:35:38,831 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2023-08-30 15:35:38,832 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 590 flow [2023-08-30 15:35:38,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 115.3125) internal successors, (3690), 32 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:38,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:38,832 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:38,838 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 15:35:39,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:39,033 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:39,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash -164360023, now seen corresponding path program 4 times [2023-08-30 15:35:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951218270] [2023-08-30 15:35:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951218270] [2023-08-30 15:35:39,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951218270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205411987] [2023-08-30 15:35:39,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 15:35:39,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:39,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:39,136 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 15:35:39,138 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 15:35:39,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 15:35:39,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:39,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:35:39,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:39,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205411987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:39,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-30 15:35:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800115776] [2023-08-30 15:35:39,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:39,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 15:35:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 15:35:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-30 15:35:39,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:35:39,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 590 flow. Second operand has 24 states, 24 states have (on average 142.33333333333334) internal successors, (3416), 24 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:39,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:39,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:35:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:44,507 INFO L130 PetriNetUnfolder]: 39037/53758 cut-off events. [2023-08-30 15:35:44,508 INFO L131 PetriNetUnfolder]: For 139863/139863 co-relation queries the response was YES. [2023-08-30 15:35:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196209 conditions, 53758 events. 39037/53758 cut-off events. For 139863/139863 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 320250 event pairs, 9224 based on Foata normal form. 936/54694 useless extension candidates. Maximal degree in co-relation 196170. Up to 11197 conditions per place. [2023-08-30 15:35:44,857 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 500 selfloop transitions, 36 changer transitions 21/557 dead transitions. [2023-08-30 15:35:44,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 557 transitions, 3665 flow [2023-08-30 15:35:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 15:35:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 15:35:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4255 transitions. [2023-08-30 15:35:44,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47900484070696836 [2023-08-30 15:35:44,861 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4255 transitions. [2023-08-30 15:35:44,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4255 transitions. [2023-08-30 15:35:44,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:44,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4255 transitions. [2023-08-30 15:35:44,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 157.59259259259258) internal successors, (4255), 27 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:44,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 329.0) internal successors, (9212), 28 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:44,869 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 329.0) internal successors, (9212), 28 states have internal predecessors, (9212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:44,869 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 590 flow. Second operand 27 states and 4255 transitions. [2023-08-30 15:35:44,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 557 transitions, 3665 flow [2023-08-30 15:35:46,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 557 transitions, 3583 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-08-30 15:35:46,703 INFO L231 Difference]: Finished difference. Result has 154 places, 96 transitions, 775 flow [2023-08-30 15:35:46,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=775, PETRI_PLACES=154, PETRI_TRANSITIONS=96} [2023-08-30 15:35:46,704 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 104 predicate places. [2023-08-30 15:35:46,704 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 96 transitions, 775 flow [2023-08-30 15:35:46,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 142.33333333333334) internal successors, (3416), 24 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:46,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:46,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:46,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:46,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:46,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:46,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:46,909 INFO L85 PathProgramCache]: Analyzing trace with hash 129078652, now seen corresponding path program 1 times [2023-08-30 15:35:46,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800631127] [2023-08-30 15:35:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:47,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:47,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800631127] [2023-08-30 15:35:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800631127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:47,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667285979] [2023-08-30 15:35:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:47,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:47,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:47,066 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:35:47,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 15:35:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:47,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:35:47,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:47,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:47,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:47,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:47,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:47,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:47,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:47,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-30 15:35:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:47,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:49,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:49,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 15:35:49,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:35:49,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-30 15:35:49,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-30 15:35:49,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:35:49,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-30 15:35:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:49,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667285979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:35:49,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:35:49,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:35:49,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516254800] [2023-08-30 15:35:49,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:35:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:35:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:35:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:35:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=268, Unknown=8, NotChecked=0, Total=342 [2023-08-30 15:35:49,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 329 [2023-08-30 15:35:49,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 96 transitions, 775 flow. Second operand has 19 states, 19 states have (on average 123.10526315789474) internal successors, (2339), 19 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:49,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:35:49,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 329 [2023-08-30 15:35:49,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:35:55,948 INFO L130 PetriNetUnfolder]: 56034/77999 cut-off events. [2023-08-30 15:35:55,948 INFO L131 PetriNetUnfolder]: For 244045/247119 co-relation queries the response was YES. [2023-08-30 15:35:56,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284696 conditions, 77999 events. 56034/77999 cut-off events. For 244045/247119 co-relation queries the response was YES. Maximal size of possible extension queue 2485. Compared 512282 event pairs, 12190 based on Foata normal form. 5518/83262 useless extension candidates. Maximal degree in co-relation 284654. Up to 39280 conditions per place. [2023-08-30 15:35:56,530 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 159 selfloop transitions, 16 changer transitions 2/185 dead transitions. [2023-08-30 15:35:56,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 185 transitions, 1708 flow [2023-08-30 15:35:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:35:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:35:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-30 15:35:56,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39918946301925023 [2023-08-30 15:35:56,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-30 15:35:56,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-30 15:35:56,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:35:56,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-30 15:35:56,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:56,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:56,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:56,534 INFO L175 Difference]: Start difference. First operand has 154 places, 96 transitions, 775 flow. Second operand 6 states and 788 transitions. [2023-08-30 15:35:56,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 185 transitions, 1708 flow [2023-08-30 15:35:57,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 1638 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-08-30 15:35:57,777 INFO L231 Difference]: Finished difference. Result has 149 places, 97 transitions, 775 flow [2023-08-30 15:35:57,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=775, PETRI_PLACES=149, PETRI_TRANSITIONS=97} [2023-08-30 15:35:57,778 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2023-08-30 15:35:57,779 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 97 transitions, 775 flow [2023-08-30 15:35:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 123.10526315789474) internal successors, (2339), 19 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:35:57,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:35:57,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:35:57,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 15:35:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 15:35:57,985 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:35:57,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:35:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1384853932, now seen corresponding path program 2 times [2023-08-30 15:35:57,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:35:57,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233226053] [2023-08-30 15:35:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:35:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:35:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:35:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:35:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233226053] [2023-08-30 15:35:58,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233226053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:35:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725952012] [2023-08-30 15:35:58,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:35:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:35:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:35:58,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:35:58,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 15:35:58,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:35:58,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:35:58,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 15:35:58,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:35:58,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:35:58,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:58,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:58,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:58,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:58,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:58,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:35:58,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:35:58,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-30 15:35:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:35:58,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:35:58,520 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1334) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:36:00,554 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1334 (Array Int Int)) (v_ArrVal_1333 (Array Int Int)) (v_ArrVal_1332 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1332) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1333) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1334) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-30 15:36:00,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:00,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-30 15:36:00,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:00,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1083 [2023-08-30 15:36:00,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 252 [2023-08-30 15:36:00,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 124 [2023-08-30 15:36:00,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 246 [2023-08-30 15:36:00,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2023-08-30 15:36:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:00,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725952012] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:00,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:00,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 15:36:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923514945] [2023-08-30 15:36:00,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 15:36:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 15:36:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=300, Unknown=6, NotChecked=74, Total=462 [2023-08-30 15:36:00,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 329 [2023-08-30 15:36:00,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 97 transitions, 775 flow. Second operand has 22 states, 22 states have (on average 119.95454545454545) internal successors, (2639), 22 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:00,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:00,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 329 [2023-08-30 15:36:00,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:06,029 INFO L130 PetriNetUnfolder]: 48764/67991 cut-off events. [2023-08-30 15:36:06,029 INFO L131 PetriNetUnfolder]: For 224733/228227 co-relation queries the response was YES. [2023-08-30 15:36:06,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249059 conditions, 67991 events. 48764/67991 cut-off events. For 224733/228227 co-relation queries the response was YES. Maximal size of possible extension queue 2363. Compared 440755 event pairs, 40525 based on Foata normal form. 5882/73538 useless extension candidates. Maximal degree in co-relation 249015. Up to 67789 conditions per place. [2023-08-30 15:36:06,503 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 42 selfloop transitions, 3 changer transitions 49/96 dead transitions. [2023-08-30 15:36:06,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 96 transitions, 943 flow [2023-08-30 15:36:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:36:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:36:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-30 15:36:06,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37750759878419454 [2023-08-30 15:36:06,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-30 15:36:06,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-30 15:36:06,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:06,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-30 15:36:06,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:06,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:06,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:06,506 INFO L175 Difference]: Start difference. First operand has 149 places, 97 transitions, 775 flow. Second operand 5 states and 621 transitions. [2023-08-30 15:36:06,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 96 transitions, 943 flow [2023-08-30 15:36:08,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 96 transitions, 915 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:36:08,289 INFO L231 Difference]: Finished difference. Result has 146 places, 47 transitions, 324 flow [2023-08-30 15:36:08,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=146, PETRI_TRANSITIONS=47} [2023-08-30 15:36:08,290 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2023-08-30 15:36:08,290 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 47 transitions, 324 flow [2023-08-30 15:36:08,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 119.95454545454545) internal successors, (2639), 22 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:08,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:08,290 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:08,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 15:36:08,494 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:08,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1795808119, now seen corresponding path program 5 times [2023-08-30 15:36:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884257151] [2023-08-30 15:36:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884257151] [2023-08-30 15:36:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884257151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364877030] [2023-08-30 15:36:08,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 15:36:08,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:08,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:08,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 15:36:09,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 15:36:09,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:09,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-30 15:36:09,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:09,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:36:09,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:09,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:09,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:09,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:09,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:09,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:09,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:09,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:09,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:09,426 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1419 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1419) c_~A~0.base) (+ c_~A~0.offset 12)) 2147483650))) is different from false [2023-08-30 15:36:09,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-30 15:36:09,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:09,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 619 treesize of output 595 [2023-08-30 15:36:09,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2023-08-30 15:36:09,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 118 [2023-08-30 15:36:09,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 15:36:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364877030] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:09,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 15:36:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960485206] [2023-08-30 15:36:09,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-30 15:36:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-30 15:36:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1067, Unknown=9, NotChecked=66, Total=1260 [2023-08-30 15:36:09,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:36:09,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 47 transitions, 324 flow. Second operand has 36 states, 36 states have (on average 118.27777777777777) internal successors, (4258), 36 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:09,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:09,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:36:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:11,448 INFO L130 PetriNetUnfolder]: 11550/15724 cut-off events. [2023-08-30 15:36:11,448 INFO L131 PetriNetUnfolder]: For 60929/60929 co-relation queries the response was YES. [2023-08-30 15:36:11,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63110 conditions, 15724 events. 11550/15724 cut-off events. For 60929/60929 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 75406 event pairs, 5625 based on Foata normal form. 48/15772 useless extension candidates. Maximal degree in co-relation 63068. Up to 14389 conditions per place. [2023-08-30 15:36:11,547 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 99 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2023-08-30 15:36:11,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 920 flow [2023-08-30 15:36:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:36:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:36:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1487 transitions. [2023-08-30 15:36:11,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37664640324214793 [2023-08-30 15:36:11,549 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1487 transitions. [2023-08-30 15:36:11,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1487 transitions. [2023-08-30 15:36:11,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:11,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1487 transitions. [2023-08-30 15:36:11,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:11,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:11,552 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:11,552 INFO L175 Difference]: Start difference. First operand has 146 places, 47 transitions, 324 flow. Second operand 12 states and 1487 transitions. [2023-08-30 15:36:11,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 920 flow [2023-08-30 15:36:12,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 745 flow, removed 39 selfloop flow, removed 30 redundant places. [2023-08-30 15:36:12,023 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 272 flow [2023-08-30 15:36:12,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2023-08-30 15:36:12,023 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-08-30 15:36:12,023 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 272 flow [2023-08-30 15:36:12,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 118.27777777777777) internal successors, (4258), 36 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:12,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:12,024 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:12,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:12,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 15:36:12,225 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:12,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash -107582673, now seen corresponding path program 3 times [2023-08-30 15:36:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264419626] [2023-08-30 15:36:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:12,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264419626] [2023-08-30 15:36:12,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264419626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:12,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850878390] [2023-08-30 15:36:12,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:36:12,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:12,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:12,691 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:12,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 15:36:12,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 15:36:12,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 15:36:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:12,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:36:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:13,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:13,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:13,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:13,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:13,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:36:13,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:13,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:13,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 15:36:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:13,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:13,314 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1515 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1515) c_~A~0.base) (+ c_~A~0.offset 12))))) is different from false [2023-08-30 15:36:13,320 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1515 (Array Int Int)) (v_ArrVal_1514 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1514) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1515) c_~A~0.base) (+ c_~A~0.offset 12))))) is different from false [2023-08-30 15:36:13,325 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1515 (Array Int Int)) (v_ArrVal_1514 (Array Int Int)) (v_ArrVal_1513 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1513) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1514) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1515) c_~A~0.base) (+ c_~A~0.offset 12)) 2147483650))) is different from false [2023-08-30 15:36:13,345 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1515 (Array Int Int)) (v_ArrVal_1514 (Array Int Int)) (v_ArrVal_1513 (Array Int Int)) (v_ArrVal_1512 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1512) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1513) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1514) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1515) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-08-30 15:36:13,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:13,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-08-30 15:36:13,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:13,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1227 treesize of output 1203 [2023-08-30 15:36:13,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2023-08-30 15:36:13,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 15:36:13,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 238 [2023-08-30 15:36:13,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:36:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-30 15:36:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850878390] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:13,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-30 15:36:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137050469] [2023-08-30 15:36:13,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:13,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-30 15:36:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-30 15:36:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1071, Unknown=4, NotChecked=276, Total=1482 [2023-08-30 15:36:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:36:13,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 272 flow. Second operand has 39 states, 39 states have (on average 115.28205128205128) internal successors, (4496), 39 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:13,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:13,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:36:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:15,778 INFO L130 PetriNetUnfolder]: 13272/18066 cut-off events. [2023-08-30 15:36:15,779 INFO L131 PetriNetUnfolder]: For 33613/33613 co-relation queries the response was YES. [2023-08-30 15:36:15,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61995 conditions, 18066 events. 13272/18066 cut-off events. For 33613/33613 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 90541 event pairs, 3970 based on Foata normal form. 620/18686 useless extension candidates. Maximal degree in co-relation 61970. Up to 7924 conditions per place. [2023-08-30 15:36:15,851 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 118 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2023-08-30 15:36:15,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 134 transitions, 854 flow [2023-08-30 15:36:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:36:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:36:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1468 transitions. [2023-08-30 15:36:15,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718338399189463 [2023-08-30 15:36:15,853 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1468 transitions. [2023-08-30 15:36:15,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1468 transitions. [2023-08-30 15:36:15,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:15,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1468 transitions. [2023-08-30 15:36:15,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.33333333333333) internal successors, (1468), 12 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,856 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 329.0) internal successors, (4277), 13 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:15,856 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 272 flow. Second operand 12 states and 1468 transitions. [2023-08-30 15:36:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 134 transitions, 854 flow [2023-08-30 15:36:16,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 812 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-30 15:36:16,016 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 280 flow [2023-08-30 15:36:16,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=280, PETRI_PLACES=85, PETRI_TRANSITIONS=50} [2023-08-30 15:36:16,016 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2023-08-30 15:36:16,016 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 280 flow [2023-08-30 15:36:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 115.28205128205128) internal successors, (4496), 39 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:16,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:16,017 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:16,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:16,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:16,222 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:16,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash 164527147, now seen corresponding path program 6 times [2023-08-30 15:36:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:16,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614587319] [2023-08-30 15:36:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:16,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:16,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614587319] [2023-08-30 15:36:16,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614587319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:16,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410915286] [2023-08-30 15:36:16,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 15:36:16,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:16,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:16,345 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:16,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 15:36:16,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 15:36:16,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 15:36:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:16,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410915286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:16,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-30 15:36:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462882700] [2023-08-30 15:36:16,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 15:36:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 15:36:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-08-30 15:36:17,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:36:17,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 50 transitions, 280 flow. Second operand has 29 states, 29 states have (on average 142.27586206896552) internal successors, (4126), 29 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:17,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:17,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:36:17,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:19,453 INFO L130 PetriNetUnfolder]: 24009/32925 cut-off events. [2023-08-30 15:36:19,453 INFO L131 PetriNetUnfolder]: For 69840/69840 co-relation queries the response was YES. [2023-08-30 15:36:19,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118600 conditions, 32925 events. 24009/32925 cut-off events. For 69840/69840 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 181030 event pairs, 10918 based on Foata normal form. 1336/34261 useless extension candidates. Maximal degree in co-relation 118575. Up to 18063 conditions per place. [2023-08-30 15:36:19,599 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 45 selfloop transitions, 6 changer transitions 148/199 dead transitions. [2023-08-30 15:36:19,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 199 transitions, 1294 flow [2023-08-30 15:36:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:36:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:36:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1974 transitions. [2023-08-30 15:36:19,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-30 15:36:19,602 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1974 transitions. [2023-08-30 15:36:19,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1974 transitions. [2023-08-30 15:36:19,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:19,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1974 transitions. [2023-08-30 15:36:19,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 151.84615384615384) internal successors, (1974), 13 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:19,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:19,606 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 329.0) internal successors, (4606), 14 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:19,606 INFO L175 Difference]: Start difference. First operand has 85 places, 50 transitions, 280 flow. Second operand 13 states and 1974 transitions. [2023-08-30 15:36:19,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 199 transitions, 1294 flow [2023-08-30 15:36:20,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 199 transitions, 1228 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-08-30 15:36:20,115 INFO L231 Difference]: Finished difference. Result has 94 places, 51 transitions, 286 flow [2023-08-30 15:36:20,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=51} [2023-08-30 15:36:20,116 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-08-30 15:36:20,116 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 51 transitions, 286 flow [2023-08-30 15:36:20,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 142.27586206896552) internal successors, (4126), 29 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:20,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:20,117 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:20,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:20,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 15:36:20,318 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:20,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash 5969931, now seen corresponding path program 7 times [2023-08-30 15:36:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:20,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960527366] [2023-08-30 15:36:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:20,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:20,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960527366] [2023-08-30 15:36:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960527366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003066680] [2023-08-30 15:36:20,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 15:36:20,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:20,793 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:20,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 15:36:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-30 15:36:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:21,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:36:21,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:21,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:21,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:21,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:21,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:21,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 15:36:21,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:21,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:21,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:21,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:24,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:24,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-30 15:36:24,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:24,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 299 [2023-08-30 15:36:24,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 122 [2023-08-30 15:36:24,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 15:36:24,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 15:36:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003066680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:24,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2023-08-30 15:36:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303101135] [2023-08-30 15:36:24,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-30 15:36:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-30 15:36:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1732, Unknown=17, NotChecked=0, Total=1892 [2023-08-30 15:36:26,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:36:29,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:36:32,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:36:32,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 329 [2023-08-30 15:36:32,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 51 transitions, 286 flow. Second operand has 44 states, 44 states have (on average 118.22727272727273) internal successors, (5202), 44 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:32,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:32,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 329 [2023-08-30 15:36:32,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:35,356 INFO L130 PetriNetUnfolder]: 13416/18259 cut-off events. [2023-08-30 15:36:35,356 INFO L131 PetriNetUnfolder]: For 40377/40377 co-relation queries the response was YES. [2023-08-30 15:36:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65650 conditions, 18259 events. 13416/18259 cut-off events. For 40377/40377 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 88890 event pairs, 6023 based on Foata normal form. 48/18307 useless extension candidates. Maximal degree in co-relation 65618. Up to 16779 conditions per place. [2023-08-30 15:36:35,442 INFO L137 encePairwiseOnDemand]: 322/329 looper letters, 113 selfloop transitions, 19 changer transitions 0/132 dead transitions. [2023-08-30 15:36:35,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 132 transitions, 912 flow [2023-08-30 15:36:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:36:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:36:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1732 transitions. [2023-08-30 15:36:35,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760312635692575 [2023-08-30 15:36:35,444 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1732 transitions. [2023-08-30 15:36:35,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1732 transitions. [2023-08-30 15:36:35,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:35,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1732 transitions. [2023-08-30 15:36:35,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 123.71428571428571) internal successors, (1732), 14 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:35,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:35,448 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:35,448 INFO L175 Difference]: Start difference. First operand has 94 places, 51 transitions, 286 flow. Second operand 14 states and 1732 transitions. [2023-08-30 15:36:35,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 132 transitions, 912 flow [2023-08-30 15:36:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 132 transitions, 868 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-30 15:36:35,745 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 309 flow [2023-08-30 15:36:35,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2023-08-30 15:36:35,745 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2023-08-30 15:36:35,745 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 309 flow [2023-08-30 15:36:35,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 118.22727272727273) internal successors, (5202), 44 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:35,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:35,746 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:35,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-30 15:36:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:35,947 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:35,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -502027775, now seen corresponding path program 4 times [2023-08-30 15:36:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106944394] [2023-08-30 15:36:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:36,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:36,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106944394] [2023-08-30 15:36:36,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106944394] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:36,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016832634] [2023-08-30 15:36:36,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 15:36:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:36,511 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 15:36:36,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 15:36:36,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 15:36:36,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:36,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 15:36:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:36,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:36,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:36,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:36,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:37,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:36:37,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 15:36:37,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:37,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:37,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-30 15:36:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:37,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:37,289 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1804 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1804) c_~A~0.base) (+ c_~A~0.offset (* |c_thread3Thread1of1ForFork1_~i~2#1| 4) 16)) 2147483650))) is different from false [2023-08-30 15:36:37,307 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1804 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1804) c_~A~0.base) (+ c_~A~0.offset 16))))) is different from false [2023-08-30 15:36:37,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:37,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-08-30 15:36:37,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:37,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1227 treesize of output 1203 [2023-08-30 15:36:37,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 274 [2023-08-30 15:36:37,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 15:36:37,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 238 [2023-08-30 15:36:37,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-30 15:36:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016832634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:37,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-08-30 15:36:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053856673] [2023-08-30 15:36:37,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-30 15:36:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-30 15:36:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1830, Unknown=25, NotChecked=174, Total=2162 [2023-08-30 15:36:37,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-30 15:36:37,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 309 flow. Second operand has 47 states, 47 states have (on average 115.2127659574468) internal successors, (5415), 47 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:37,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:37,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-30 15:36:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:40,904 INFO L130 PetriNetUnfolder]: 15138/20601 cut-off events. [2023-08-30 15:36:40,905 INFO L131 PetriNetUnfolder]: For 46848/46848 co-relation queries the response was YES. [2023-08-30 15:36:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72113 conditions, 20601 events. 15138/20601 cut-off events. For 46848/46848 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 104343 event pairs, 3970 based on Foata normal form. 620/21221 useless extension candidates. Maximal degree in co-relation 72086. Up to 7924 conditions per place. [2023-08-30 15:36:41,027 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 140 selfloop transitions, 19 changer transitions 0/159 dead transitions. [2023-08-30 15:36:41,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 159 transitions, 1019 flow [2023-08-30 15:36:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:36:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:36:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1714 transitions. [2023-08-30 15:36:41,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721233174120712 [2023-08-30 15:36:41,030 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1714 transitions. [2023-08-30 15:36:41,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1714 transitions. [2023-08-30 15:36:41,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:41,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1714 transitions. [2023-08-30 15:36:41,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 122.42857142857143) internal successors, (1714), 14 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,034 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 329.0) internal successors, (4935), 15 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,034 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 309 flow. Second operand 14 states and 1714 transitions. [2023-08-30 15:36:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 159 transitions, 1019 flow [2023-08-30 15:36:41,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 973 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-08-30 15:36:41,347 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 321 flow [2023-08-30 15:36:41,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=321, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2023-08-30 15:36:41,348 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 15:36:41,348 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 321 flow [2023-08-30 15:36:41,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 115.2127659574468) internal successors, (5415), 47 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:41,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:41,349 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:41,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:41,554 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:41,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash 185071849, now seen corresponding path program 8 times [2023-08-30 15:36:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:41,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45616754] [2023-08-30 15:36:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:41,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45616754] [2023-08-30 15:36:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45616754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683057721] [2023-08-30 15:36:41,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:36:41,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:41,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:41,701 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:41,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 15:36:41,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:36:41,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:41,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 15:36:41,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:42,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683057721] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:42,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2023-08-30 15:36:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293323742] [2023-08-30 15:36:42,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 15:36:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 15:36:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 15:36:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 329 [2023-08-30 15:36:42,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 321 flow. Second operand has 34 states, 34 states have (on average 142.23529411764707) internal successors, (4836), 34 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:42,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:36:42,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 329 [2023-08-30 15:36:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:36:45,258 INFO L130 PetriNetUnfolder]: 27741/37994 cut-off events. [2023-08-30 15:36:45,258 INFO L131 PetriNetUnfolder]: For 85227/85227 co-relation queries the response was YES. [2023-08-30 15:36:45,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138547 conditions, 37994 events. 27741/37994 cut-off events. For 85227/85227 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 211410 event pairs, 12981 based on Foata normal form. 1336/39330 useless extension candidates. Maximal degree in co-relation 138519. Up to 20597 conditions per place. [2023-08-30 15:36:45,530 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 48 selfloop transitions, 7 changer transitions 172/227 dead transitions. [2023-08-30 15:36:45,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 227 transitions, 1498 flow [2023-08-30 15:36:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:36:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:36:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2274 transitions. [2023-08-30 15:36:45,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460790273556231 [2023-08-30 15:36:45,532 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2274 transitions. [2023-08-30 15:36:45,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2274 transitions. [2023-08-30 15:36:45,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:36:45,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2274 transitions. [2023-08-30 15:36:45,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 151.6) internal successors, (2274), 15 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:45,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 329.0) internal successors, (5264), 16 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:45,537 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 329.0) internal successors, (5264), 16 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:45,537 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 321 flow. Second operand 15 states and 2274 transitions. [2023-08-30 15:36:45,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 227 transitions, 1498 flow [2023-08-30 15:36:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 227 transitions, 1418 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-08-30 15:36:46,671 INFO L231 Difference]: Finished difference. Result has 103 places, 55 transitions, 327 flow [2023-08-30 15:36:46,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=327, PETRI_PLACES=103, PETRI_TRANSITIONS=55} [2023-08-30 15:36:46,672 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2023-08-30 15:36:46,672 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 55 transitions, 327 flow [2023-08-30 15:36:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 142.23529411764707) internal successors, (4836), 34 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:36:46,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:36:46,673 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:36:46,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 15:36:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:46,873 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 15:36:46,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:36:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1864557367, now seen corresponding path program 9 times [2023-08-30 15:36:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:36:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431813622] [2023-08-30 15:36:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:36:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:36:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:36:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:47,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:36:47,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431813622] [2023-08-30 15:36:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431813622] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:36:47,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389147423] [2023-08-30 15:36:47,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:36:47,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:36:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:47,429 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:36:47,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 15:36:47,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 15:36:47,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:36:47,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-30 15:36:47,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:36:47,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 15:36:47,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:47,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:36:47,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:47,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:36:48,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:36:48,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:36:48,123 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 15:36:48,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 32 [2023-08-30 15:36:48,199 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 15:36:48,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2023-08-30 15:36:48,304 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 15:36:48,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2023-08-30 15:36:48,397 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 15:36:48,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2023-08-30 15:36:48,489 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-30 15:36:48,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2023-08-30 15:36:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:48,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:36:53,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:53,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 70 [2023-08-30 15:36:53,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 903 treesize of output 897 [2023-08-30 15:36:53,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,691 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,691 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 368 treesize of output 356 [2023-08-30 15:36:53,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:36:53,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 151 [2023-08-30 15:36:53,723 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,723 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:36:53,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 136 [2023-08-30 15:36:53,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1990706 treesize of output 1966130 [2023-08-30 15:36:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:36:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389147423] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:36:55,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:36:55,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2023-08-30 15:36:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402560845] [2023-08-30 15:36:55,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:36:55,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-30 15:36:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:36:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-30 15:36:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2228, Unknown=5, NotChecked=0, Total=2450 [2023-08-30 15:36:57,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:37:03,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:37:03,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 329 [2023-08-30 15:37:03,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 55 transitions, 327 flow. Second operand has 50 states, 50 states have (on average 106.2) internal successors, (5310), 50 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:37:03,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:03,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 329 [2023-08-30 15:37:03,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:06,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:37:15,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:37:29,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:37:42,240 WARN L222 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 117 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 15:38:01,387 WARN L222 SmtUtils]: Spent 14.30s on a formula simplification. DAG size of input: 129 DAG size of output: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 15:38:02,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:38:10,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:38:21,264 WARN L222 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 114 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 15:38:24,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:38:31,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:38:34,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:38:47,989 WARN L222 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 125 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)