./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:15:46,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:15:46,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:15:46,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:15:46,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:15:46,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:15:46,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:15:46,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:15:46,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:15:46,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:15:46,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:15:46,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:15:46,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:15:46,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:15:46,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:15:46,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:15:46,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:15:46,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:15:46,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:15:46,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:15:46,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:15:46,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:15:46,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:15:46,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:15:46,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:15:46,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:15:46,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:15:46,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:15:46,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:15:46,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:15:46,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:15:46,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:15:46,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:15:46,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:15:46,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:15:46,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:15:46,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:15:46,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:15:46,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:15:46,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:15:46,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:15:46,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:15:46,369 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:15:46,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:15:46,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:15:46,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:15:46,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:15:46,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:15:46,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:15:46,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:15:46,372 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:15:46,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:15:46,373 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:15:46,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:15:46,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:15:46,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:15:46,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:15:46,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:15:46,375 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:15:46,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:15:46,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:15:46,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:15:46,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:15:46,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:15:46,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:15:46,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:15:46,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:15:46,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:15:46,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:15:46,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:15:46,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:15:46,378 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:15:46,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:15:46,379 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:15:46,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:15:46,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:15:46,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:15:46,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:15:46,692 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:15:46,692 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:15:46,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-09-01 08:15:47,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:15:48,191 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:15:48,191 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-09-01 08:15:48,199 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ff6b883/eea82198032a4f098b5b95d294f26eb8/FLAG541bbf6c4 [2023-09-01 08:15:48,213 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ff6b883/eea82198032a4f098b5b95d294f26eb8 [2023-09-01 08:15:48,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:15:48,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:15:48,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:15:48,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:15:48,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:15:48,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ac850c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48, skipping insertion in model container [2023-09-01 08:15:48,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:15:48,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:15:48,395 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-more-array-sum2.wvr.c[2599,2612] [2023-09-01 08:15:48,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:15:48,409 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:15:48,428 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-09-01 08:15:48,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:15:48,441 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:15:48,441 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:15:48,446 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:15:48,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48 WrapperNode [2023-09-01 08:15:48,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:15:48,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:15:48,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:15:48,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:15:48,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,514 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 369 [2023-09-01 08:15:48,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:15:48,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:15:48,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:15:48,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:15:48,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:15:48,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:15:48,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:15:48,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:15:48,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (1/1) ... [2023-09-01 08:15:48,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:15:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:15:48,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:15:48,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:15:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:15:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:15:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:15:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:15:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:15:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:15:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:15:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:15:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:15:48,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:15:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:15:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:15:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:15:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:15:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:15:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:15:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:15:48,655 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:15:48,772 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:15:48,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:15:49,395 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:15:50,549 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:15:50,550 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:15:50,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:15:50 BoogieIcfgContainer [2023-09-01 08:15:50,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:15:50,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:15:50,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:15:50,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:15:50,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:15:48" (1/3) ... [2023-09-01 08:15:50,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99fb01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:15:50, skipping insertion in model container [2023-09-01 08:15:50,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:15:48" (2/3) ... [2023-09-01 08:15:50,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99fb01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:15:50, skipping insertion in model container [2023-09-01 08:15:50,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:15:50" (3/3) ... [2023-09-01 08:15:50,562 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-09-01 08:15:50,570 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:15:50,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:15:50,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-09-01 08:15:50,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:15:51,048 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:15:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 234 transitions, 492 flow [2023-09-01 08:15:51,220 INFO L130 PetriNetUnfolder]: 16/231 cut-off events. [2023-09-01 08:15:51,220 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:15:51,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 16/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 390 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-09-01 08:15:51,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 234 transitions, 492 flow [2023-09-01 08:15:51,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 213 transitions, 441 flow [2023-09-01 08:15:51,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:15:51,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 213 transitions, 441 flow [2023-09-01 08:15:51,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 213 transitions, 441 flow [2023-09-01 08:15:51,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 213 transitions, 441 flow [2023-09-01 08:15:51,333 INFO L130 PetriNetUnfolder]: 15/213 cut-off events. [2023-09-01 08:15:51,333 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:15:51,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 213 events. 15/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 381 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-09-01 08:15:51,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 5928 [2023-09-01 08:16:31,230 INFO L134 LiptonReduction]: Checked pairs total: 7777 [2023-09-01 08:16:31,230 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-09-01 08:16:31,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:16:31,248 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;@6758cc39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:16:31,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-09-01 08:16:31,251 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:16:31,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:16:31,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:31,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:16:31,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:31,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 52974, now seen corresponding path program 1 times [2023-09-01 08:16:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221372198] [2023-09-01 08:16:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221372198] [2023-09-01 08:16:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221372198] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:16:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:16:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:16:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293676326] [2023-09-01 08:16:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:16:31,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:16:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:16:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:16:31,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-09-01 08:16:31,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:31,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:31,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-09-01 08:16:31,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:40,769 INFO L130 PetriNetUnfolder]: 26723/33113 cut-off events. [2023-09-01 08:16:40,769 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-09-01 08:16:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66772 conditions, 33113 events. 26723/33113 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 4000. Compared 172929 event pairs, 12995 based on Foata normal form. 0/6652 useless extension candidates. Maximal degree in co-relation 31112. Up to 16552 conditions per place. [2023-09-01 08:16:40,994 INFO L137 encePairwiseOnDemand]: 432/458 looper letters, 89 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-09-01 08:16:40,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 408 flow [2023-09-01 08:16:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:16:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:16:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-09-01 08:16:41,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-09-01 08:16:41,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-09-01 08:16:41,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-09-01 08:16:41,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:41,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-09-01 08:16:41,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,033 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 155 flow. Second operand 3 states and 646 transitions. [2023-09-01 08:16:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 408 flow [2023-09-01 08:16:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:16:41,135 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 146 flow [2023-09-01 08:16:41,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-09-01 08:16:41,141 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-09-01 08:16:41,144 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 146 flow [2023-09-01 08:16:41,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:41,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:16:41,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:16:41,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:41,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1643863, now seen corresponding path program 1 times [2023-09-01 08:16:41,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:41,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871847687] [2023-09-01 08:16:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:41,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871847687] [2023-09-01 08:16:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871847687] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115913074] [2023-09-01 08:16:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:41,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:41,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:16:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:41,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:16:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:41,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:16:41,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115913074] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:16:41,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:16:41,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:16:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898339627] [2023-09-01 08:16:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:16:41,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:16:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:16:41,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:16:41,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-09-01 08:16:41,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:41,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:41,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-09-01 08:16:41,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:16:49,862 INFO L130 PetriNetUnfolder]: 26723/33111 cut-off events. [2023-09-01 08:16:49,862 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 08:16:49,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66492 conditions, 33111 events. 26723/33111 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3361. Compared 171773 event pairs, 12995 based on Foata normal form. 0/6656 useless extension candidates. Maximal degree in co-relation 33477. Up to 16552 conditions per place. [2023-09-01 08:16:50,047 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 87 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-09-01 08:16:50,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 408 flow [2023-09-01 08:16:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:16:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:16:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2023-09-01 08:16:50,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42412663755458513 [2023-09-01 08:16:50,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2023-09-01 08:16:50,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2023-09-01 08:16:50,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:16:50,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2023-09-01 08:16:50,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:50,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:50,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:50,058 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 146 flow. Second operand 4 states and 777 transitions. [2023-09-01 08:16:50,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 408 flow [2023-09-01 08:16:50,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:16:50,061 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 138 flow [2023-09-01 08:16:50,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-09-01 08:16:50,062 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-09-01 08:16:50,062 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 138 flow [2023-09-01 08:16:50,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:50,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:16:50,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:16:50,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:16:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:50,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:16:50,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:16:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1643864, now seen corresponding path program 1 times [2023-09-01 08:16:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:16:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092916185] [2023-09-01 08:16:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:16:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:16:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092916185] [2023-09-01 08:16:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092916185] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:16:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53542390] [2023-09-01 08:16:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:16:50,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:16:50,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:50,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:16:50,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:16:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:16:50,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:16:50,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:16:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:50,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:16:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:16:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53542390] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:16:50,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:16:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:16:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826473320] [2023-09-01 08:16:50,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:16:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:16:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:16:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:16:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:16:50,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-09-01 08:16:50,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 172.14285714285714) internal successors, (1205), 7 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:16:50,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:16:50,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-09-01 08:16:50,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:08,972 INFO L130 PetriNetUnfolder]: 66446/82413 cut-off events. [2023-09-01 08:17:08,972 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-09-01 08:17:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165471 conditions, 82413 events. 66446/82413 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 7083. Compared 466349 event pairs, 32456 based on Foata normal form. 0/16619 useless extension candidates. Maximal degree in co-relation 131947. Up to 16555 conditions per place. [2023-09-01 08:17:09,342 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 210 selfloop transitions, 13 changer transitions 0/226 dead transitions. [2023-09-01 08:17:09,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 226 transitions, 978 flow [2023-09-01 08:17:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:17:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:17:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1255 transitions. [2023-09-01 08:17:09,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566957787481805 [2023-09-01 08:17:09,352 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1255 transitions. [2023-09-01 08:17:09,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1255 transitions. [2023-09-01 08:17:09,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:09,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1255 transitions. [2023-09-01 08:17:09,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:09,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:09,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:09,366 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 138 flow. Second operand 6 states and 1255 transitions. [2023-09-01 08:17:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 226 transitions, 978 flow [2023-09-01 08:17:09,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 226 transitions, 970 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:17:09,371 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 229 flow [2023-09-01 08:17:09,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2023-09-01 08:17:09,372 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-09-01 08:17:09,372 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 229 flow [2023-09-01 08:17:09,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 172.14285714285714) internal successors, (1205), 7 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:09,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:09,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:17:09,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:17:09,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:17:09,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:17:09,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1729339695, now seen corresponding path program 2 times [2023-09-01 08:17:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259365868] [2023-09-01 08:17:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:09,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259365868] [2023-09-01 08:17:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259365868] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:17:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463727071] [2023-09-01 08:17:09,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:17:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:09,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:17:09,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:17:10,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:17:10,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:17:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:17:10,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:17:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:17:10,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:17:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463727071] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:17:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:17:10,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182082366] [2023-09-01 08:17:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:10,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:17:10,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:17:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:17:10,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 458 [2023-09-01 08:17:10,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:10,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:10,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 458 [2023-09-01 08:17:10,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:28,647 INFO L130 PetriNetUnfolder]: 67406/83372 cut-off events. [2023-09-01 08:17:28,647 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-09-01 08:17:28,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167457 conditions, 83372 events. 67406/83372 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 7124. Compared 467071 event pairs, 32540 based on Foata normal form. 1/16673 useless extension candidates. Maximal degree in co-relation 133921. Up to 82757 conditions per place. [2023-09-01 08:17:28,993 INFO L137 encePairwiseOnDemand]: 455/458 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-09-01 08:17:28,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 335 flow [2023-09-01 08:17:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:17:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:17:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-09-01 08:17:28,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119359534206696 [2023-09-01 08:17:28,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-09-01 08:17:28,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-09-01 08:17:28,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:28,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-09-01 08:17:28,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:29,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:29,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:29,002 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 229 flow. Second operand 3 states and 566 transitions. [2023-09-01 08:17:29,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 335 flow [2023-09-01 08:17:29,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 316 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:17:29,004 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 212 flow [2023-09-01 08:17:29,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-09-01 08:17:29,005 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-09-01 08:17:29,005 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 212 flow [2023-09-01 08:17:29,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:29,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:29,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:17:29,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:17:29,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:29,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:17:29,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1747061066, now seen corresponding path program 1 times [2023-09-01 08:17:29,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:29,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085565337] [2023-09-01 08:17:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:29,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085565337] [2023-09-01 08:17:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085565337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:17:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:17:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833430235] [2023-09-01 08:17:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:17:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:17:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:17:29,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 458 [2023-09-01 08:17:29,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:29,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:29,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 458 [2023-09-01 08:17:29,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:53,519 INFO L130 PetriNetUnfolder]: 102581/130507 cut-off events. [2023-09-01 08:17:53,519 INFO L131 PetriNetUnfolder]: For 612/612 co-relation queries the response was YES. [2023-09-01 08:17:53,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262643 conditions, 130507 events. 102581/130507 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 11535. Compared 833462 event pairs, 27690 based on Foata normal form. 0/29207 useless extension candidates. Maximal degree in co-relation 262587. Up to 70793 conditions per place. [2023-09-01 08:17:54,140 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 94 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-09-01 08:17:54,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 483 flow [2023-09-01 08:17:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:17:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:17:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-09-01 08:17:54,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-09-01 08:17:54,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-09-01 08:17:54,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-09-01 08:17:54,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:54,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-09-01 08:17:54,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:54,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:54,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:54,149 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 212 flow. Second operand 3 states and 611 transitions. [2023-09-01 08:17:54,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 483 flow [2023-09-01 08:17:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:17:54,152 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 214 flow [2023-09-01 08:17:54,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-09-01 08:17:54,152 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-09-01 08:17:54,153 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 214 flow [2023-09-01 08:17:54,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:54,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:54,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:17:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:17:54,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:17:54,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1747060959, now seen corresponding path program 1 times [2023-09-01 08:17:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:17:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:54,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023081686] [2023-09-01 08:17:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023081686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:17:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:17:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657061594] [2023-09-01 08:17:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:54,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:17:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:17:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:17:54,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 458 [2023-09-01 08:17:54,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:54,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:54,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 458 [2023-09-01 08:17:54,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:12,469 INFO L130 PetriNetUnfolder]: 79073/101417 cut-off events. [2023-09-01 08:18:12,469 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2023-09-01 08:18:12,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209994 conditions, 101417 events. 79073/101417 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 10133. Compared 660226 event pairs, 46316 based on Foata normal form. 3/25112 useless extension candidates. Maximal degree in co-relation 209938. Up to 100644 conditions per place. [2023-09-01 08:18:12,981 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 52 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2023-09-01 08:18:12,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 334 flow [2023-09-01 08:18:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:18:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:18:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 709 transitions. [2023-09-01 08:18:12,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38700873362445415 [2023-09-01 08:18:12,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 709 transitions. [2023-09-01 08:18:12,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 709 transitions. [2023-09-01 08:18:12,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:12,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 709 transitions. [2023-09-01 08:18:12,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:12,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:12,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:12,989 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 214 flow. Second operand 4 states and 709 transitions. [2023-09-01 08:18:12,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 334 flow [2023-09-01 08:18:12,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:12,994 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 233 flow [2023-09-01 08:18:12,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-09-01 08:18:12,995 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-09-01 08:18:12,995 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 233 flow [2023-09-01 08:18:12,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:12,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:12,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:12,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:18:12,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:18:12,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash 292825151, now seen corresponding path program 1 times [2023-09-01 08:18:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002387053] [2023-09-01 08:18:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:12,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:18:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002387053] [2023-09-01 08:18:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002387053] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:13,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:13,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037456503] [2023-09-01 08:18:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:13,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:13,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 458 [2023-09-01 08:18:13,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:13,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:13,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 458 [2023-09-01 08:18:13,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:29,302 INFO L130 PetriNetUnfolder]: 72385/91540 cut-off events. [2023-09-01 08:18:29,302 INFO L131 PetriNetUnfolder]: For 1124/2136 co-relation queries the response was YES. [2023-09-01 08:18:29,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188566 conditions, 91540 events. 72385/91540 cut-off events. For 1124/2136 co-relation queries the response was YES. Maximal size of possible extension queue 8908. Compared 571906 event pairs, 14972 based on Foata normal form. 1012/22904 useless extension candidates. Maximal degree in co-relation 188502. Up to 58997 conditions per place. [2023-09-01 08:18:29,939 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 90 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-09-01 08:18:29,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 490 flow [2023-09-01 08:18:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-09-01 08:18:29,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-09-01 08:18:29,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-09-01 08:18:29,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-09-01 08:18:29,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:29,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-09-01 08:18:29,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:29,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:29,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:29,949 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 233 flow. Second operand 3 states and 611 transitions. [2023-09-01 08:18:29,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 490 flow [2023-09-01 08:18:29,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 474 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:18:29,953 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 227 flow [2023-09-01 08:18:29,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-09-01 08:18:29,954 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-09-01 08:18:29,954 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 227 flow [2023-09-01 08:18:29,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:29,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:29,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:18:29,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:18:29,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 292825145, now seen corresponding path program 1 times [2023-09-01 08:18:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:29,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369280249] [2023-09-01 08:18:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369280249] [2023-09-01 08:18:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369280249] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:30,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666732527] [2023-09-01 08:18:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:30,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:30,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:30,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:18:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:18:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:30,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 08:18:30,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:30,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:18:30,909 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 08:18:30,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 39 [2023-09-01 08:18:30,966 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 [2023-09-01 08:18:31,003 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:18:31,004 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 11 treesize of output 11 [2023-09-01 08:18:31,035 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 14 treesize of output 16 [2023-09-01 08:18:31,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:18:31,061 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 14 treesize of output 16 [2023-09-01 08:18:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:31,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:33,253 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_246 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (<= (+ .cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)) 2147483647) (<= 0 .cse0) (< (+ 9223372039002259455 .cse0) 0))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_246 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (< 0 .cse2) (<= (+ .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) 2147483647) (< .cse2 0)))))) is different from false [2023-09-01 08:18:33,285 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_245) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (<= (+ .cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)) 2147483647) (< 0 .cse0) (< .cse0 0))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_245) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (<= 0 .cse2) (<= (+ .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) 2147483647) (< (+ 9223372039002259455 .cse2) 0)))))) is different from false [2023-09-01 08:18:34,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,329 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 215 treesize of output 132 [2023-09-01 08:18:34,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1941 treesize of output 1820 [2023-09-01 08:18:34,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,520 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 765 treesize of output 754 [2023-09-01 08:18:34,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,563 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 745 treesize of output 714 [2023-09-01 08:18:34,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,608 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 705 treesize of output 674 [2023-09-01 08:18:34,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:18:34,654 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 665 treesize of output 654 [2023-09-01 08:23:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:23:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666732527] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:23:16,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:23:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 08:23:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072463817] [2023-09-01 08:23:16,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:23:16,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:23:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:23:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:23:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=3, NotChecked=58, Total=306 [2023-09-01 08:23:16,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 458 [2023-09-01 08:23:16,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 132.16666666666666) internal successors, (2379), 18 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:23:16,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:23:16,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 458 [2023-09-01 08:23:16,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:23:19,011 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] [2023-09-01 08:23:21,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:23,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:25,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:27,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:29,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:31,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:33,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:35,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:37,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:39,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:41,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:43,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:45,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:47,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:49,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:51,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:53,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:55,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:57,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:23:59,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:01,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:03,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:05,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:07,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:09,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:11,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:13,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:15,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:17,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:19,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:21,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:23,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:25,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:27,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:29,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:31,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:24:47,371 INFO L130 PetriNetUnfolder]: 77589/99920 cut-off events. [2023-09-01 08:24:47,372 INFO L131 PetriNetUnfolder]: For 6184/6184 co-relation queries the response was YES. [2023-09-01 08:24:47,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210108 conditions, 99920 events. 77589/99920 cut-off events. For 6184/6184 co-relation queries the response was YES. Maximal size of possible extension queue 10515. Compared 661250 event pairs, 34512 based on Foata normal form. 0/26148 useless extension candidates. Maximal degree in co-relation 210050. Up to 88661 conditions per place. [2023-09-01 08:24:47,911 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2023-09-01 08:24:47,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 533 flow [2023-09-01 08:24:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:24:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:24:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1139 transitions. [2023-09-01 08:24:47,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31086244541484714 [2023-09-01 08:24:47,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1139 transitions. [2023-09-01 08:24:47,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1139 transitions. [2023-09-01 08:24:47,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:24:47,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1139 transitions. [2023-09-01 08:24:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:47,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:47,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:47,923 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 227 flow. Second operand 8 states and 1139 transitions. [2023-09-01 08:24:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 533 flow [2023-09-01 08:24:47,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:24:47,931 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 293 flow [2023-09-01 08:24:47,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-09-01 08:24:47,932 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-09-01 08:24:47,932 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 293 flow [2023-09-01 08:24:47,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 132.16666666666666) internal successors, (2379), 18 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:47,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:24:47,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:24:47,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:24:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:48,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-09-01 08:24:48,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:24:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 292825142, now seen corresponding path program 1 times [2023-09-01 08:24:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:24:48,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761088599] [2023-09-01 08:24:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:24:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:24:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:24:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761088599] [2023-09-01 08:24:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761088599] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:24:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549482178] [2023-09-01 08:24:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:24:48,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:24:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:24:48,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:24:48,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:24:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:24:48,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:24:48,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:24:48,933 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 [2023-09-01 08:24:48,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:24:48,965 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 14 treesize of output 16 [2023-09-01 08:24:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:24:48,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:24:49,006 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_293 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_293) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-09-01 08:24:49,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:24:49,015 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 22 treesize of output 23 [2023-09-01 08:24:49,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:24:49,022 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 33 treesize of output 29 [2023-09-01 08:24:49,027 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 5 treesize of output 3 [2023-09-01 08:24:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 08:24:49,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549482178] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:24:49,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:24:49,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:24:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662004235] [2023-09-01 08:24:49,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:24:49,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:24:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:24:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:24:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2023-09-01 08:24:49,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 458 [2023-09-01 08:24:49,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 136.35714285714286) internal successors, (1909), 14 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:24:49,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:24:49,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 458 [2023-09-01 08:24:49,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand