./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/parallel-min-max-1.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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:13:41,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:13:41,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:13:41,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:13:41,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:13:41,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:13:41,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:13:41,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:13:41,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:13:41,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:13:41,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:13:41,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:13:41,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:13:41,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:13:41,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:13:41,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:13:41,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:13:41,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:13:41,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:13:41,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:13:41,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:13:41,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:13:41,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:13:41,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:13:41,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:13:41,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:13:41,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:13:41,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:13:41,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:13:41,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:13:41,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:13:41,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:13:41,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:13:41,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:13:41,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:13:41,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:13:41,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:13:41,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:13:41,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:13:41,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:13:41,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:13:41,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:13:41,554 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:13:41,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:13:41,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:13:41,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:13:41,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:13:41,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:13:41,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:13:41,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:13:41,558 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:13:41,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:13:41,559 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:13:41,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:13:41,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:13:41,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:13:41,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:13:41,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:13:41,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:13:41,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:13:41,561 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:13:41,561 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:13:41,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:13:41,562 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:13:41,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:13:41,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:13:41,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:13:41,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:13:41,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:13:41,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:13:41,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:13:41,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:13:41,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:13:41,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:13:41,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:13:41,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:13:41,565 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:13:41,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:13:41,565 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:13:41,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:13:41,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:13:41,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:13:41,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:13:41,889 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:13:41,889 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:13:41,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-30 11:13:43,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:13:43,219 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:13:43,220 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-30 11:13:43,227 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45da76c4a/d4d4047093fe4c768cfdeef1f20c09d3/FLAGd3cce0304 [2023-08-30 11:13:43,253 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45da76c4a/d4d4047093fe4c768cfdeef1f20c09d3 [2023-08-30 11:13:43,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:13:43,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:13:43,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:13:43,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:13:43,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:13:43,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa1ffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43, skipping insertion in model container [2023-08-30 11:13:43,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:13:43,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:13:43,449 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/parallel-min-max-1.wvr.c[3057,3070] [2023-08-30 11:13:43,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:13:43,462 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:13:43,491 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/parallel-min-max-1.wvr.c[3057,3070] [2023-08-30 11:13:43,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:13:43,510 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:13:43,511 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:13:43,516 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:13:43,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43 WrapperNode [2023-08-30 11:13:43,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:13:43,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:13:43,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:13:43,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:13:43,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,556 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 131 [2023-08-30 11:13:43,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:13:43,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:13:43,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:13:43,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:13:43,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:13:43,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:13:43,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:13:43,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:13:43,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (1/1) ... [2023-08-30 11:13:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:13:43,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:43,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:13:43,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:13:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:13:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:13:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:13:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:13:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:13:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:13:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:13:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:13:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:13:43,666 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:13:43,751 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:13:43,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:13:44,158 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:13:44,228 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:13:44,230 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 11:13:44,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:44 BoogieIcfgContainer [2023-08-30 11:13:44,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:13:44,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:13:44,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:13:44,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:13:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:13:43" (1/3) ... [2023-08-30 11:13:44,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa35a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:13:44, skipping insertion in model container [2023-08-30 11:13:44,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:43" (2/3) ... [2023-08-30 11:13:44,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa35a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:13:44, skipping insertion in model container [2023-08-30 11:13:44,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:44" (3/3) ... [2023-08-30 11:13:44,243 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-08-30 11:13:44,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:13:44,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:13:44,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 11:13:44,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:13:44,390 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:13:44,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 11:13:44,544 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 11:13:44,551 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:13:44,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-08-30 11:13:44,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 11:13:44,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 322 flow [2023-08-30 11:13:44,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:13:44,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 322 flow [2023-08-30 11:13:44,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 322 flow [2023-08-30 11:13:44,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 322 flow [2023-08-30 11:13:44,639 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-08-30 11:13:44,640 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:13:44,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 155 events. 11/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-08-30 11:13:44,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 1604 [2023-08-30 11:13:50,460 INFO L134 LiptonReduction]: Checked pairs total: 2248 [2023-08-30 11:13:50,461 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-30 11:13:50,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:13:50,478 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;@6f9ec7d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:13:50,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 11:13:50,481 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:13:50,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:13:50,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:50,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:13:50,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:50,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash 22144, now seen corresponding path program 1 times [2023-08-30 11:13:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433933043] [2023-08-30 11:13:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433933043] [2023-08-30 11:13:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433933043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:13:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258602081] [2023-08-30 11:13:50,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:50,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 11:13:50,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:50,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 11:13:50,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:51,184 INFO L130 PetriNetUnfolder]: 963/1473 cut-off events. [2023-08-30 11:13:51,185 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 11:13:51,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 1473 events. 963/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6126 event pairs, 806 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1428. Up to 739 conditions per place. [2023-08-30 11:13:51,199 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 11:13:51,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 220 flow [2023-08-30 11:13:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-30 11:13:51,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102639296187683 [2023-08-30 11:13:51,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-30 11:13:51,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-30 11:13:51,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:51,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-30 11:13:51,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-30 11:13:51,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,229 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 64 flow. Second operand 3 states and 522 transitions. [2023-08-30 11:13:51,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 220 flow [2023-08-30 11:13:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:13:51,234 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 72 flow [2023-08-30 11:13:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 11:13:51,239 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 11:13:51,239 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 72 flow [2023-08-30 11:13:51,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:51,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:13:51,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:13:51,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:51,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash 687373, now seen corresponding path program 1 times [2023-08-30 11:13:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:51,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500422278] [2023-08-30 11:13:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500422278] [2023-08-30 11:13:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500422278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515188520] [2023-08-30 11:13:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:51,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:51,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:51,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:51,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:13:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:51,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:51,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:51,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:51,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515188520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:51,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:51,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:13:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250720797] [2023-08-30 11:13:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:13:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:13:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:51,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 11:13:51,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:51,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 11:13:51,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:51,742 INFO L130 PetriNetUnfolder]: 963/1472 cut-off events. [2023-08-30 11:13:51,742 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 11:13:51,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1472 events. 963/1472 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6123 event pairs, 806 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 1559. Up to 737 conditions per place. [2023-08-30 11:13:51,750 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 11:13:51,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 214 flow [2023-08-30 11:13:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:13:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:13:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 677 transitions. [2023-08-30 11:13:51,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963343108504399 [2023-08-30 11:13:51,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:51,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,760 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 4 states and 677 transitions. [2023-08-30 11:13:51,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 214 flow [2023-08-30 11:13:51,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:51,761 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 70 flow [2023-08-30 11:13:51,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 11:13:51,762 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-30 11:13:51,762 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 70 flow [2023-08-30 11:13:51,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:51,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:13:51,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:51,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:51,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:51,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash 687383, now seen corresponding path program 1 times [2023-08-30 11:13:51,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651669881] [2023-08-30 11:13:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651669881] [2023-08-30 11:13:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651669881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236514279] [2023-08-30 11:13:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:52,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:52,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:52,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:13:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:52,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:52,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:52,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:13:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236514279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:13:52,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:13:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:13:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136410206] [2023-08-30 11:13:52,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:13:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:13:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:13:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:13:52,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 11:13:52,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:52,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 11:13:52,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:52,620 INFO L130 PetriNetUnfolder]: 2406/3677 cut-off events. [2023-08-30 11:13:52,620 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 11:13:52,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7792 conditions, 3677 events. 2406/3677 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17947 event pairs, 2015 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6227. Up to 738 conditions per place. [2023-08-30 11:13:52,640 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 112 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-30 11:13:52,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 117 transitions, 516 flow [2023-08-30 11:13:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:13:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:13:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2023-08-30 11:13:52,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190615835777126 [2023-08-30 11:13:52,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2023-08-30 11:13:52,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2023-08-30 11:13:52,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:52,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2023-08-30 11:13:52,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,651 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,652 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 70 flow. Second operand 6 states and 1062 transitions. [2023-08-30 11:13:52,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 117 transitions, 516 flow [2023-08-30 11:13:52,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 117 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:13:52,654 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 103 flow [2023-08-30 11:13:52,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-30 11:13:52,655 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-30 11:13:52,655 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 103 flow [2023-08-30 11:13:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:52,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:13:52,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:13:52,861 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 [2023-08-30 11:13:52,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:52,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash -980524645, now seen corresponding path program 1 times [2023-08-30 11:13:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:52,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201465186] [2023-08-30 11:13:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201465186] [2023-08-30 11:13:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201465186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:13:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412004990] [2023-08-30 11:13:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:52,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:52,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:52,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:52,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:52,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:53,432 INFO L130 PetriNetUnfolder]: 3326/5097 cut-off events. [2023-08-30 11:13:53,433 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 11:13:53,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 5097 events. 3326/5097 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27745 event pairs, 2015 based on Foata normal form. 0/3497 useless extension candidates. Maximal degree in co-relation 8621. Up to 3678 conditions per place. [2023-08-30 11:13:53,460 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 11:13:53,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 230 flow [2023-08-30 11:13:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 11:13:53,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2023-08-30 11:13:53,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 11:13:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 11:13:53,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:53,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 11:13:53,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,467 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 103 flow. Second operand 3 states and 517 transitions. [2023-08-30 11:13:53,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 230 flow [2023-08-30 11:13:53,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 222 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:53,470 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 109 flow [2023-08-30 11:13:53,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-30 11:13:53,471 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 11:13:53,471 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 109 flow [2023-08-30 11:13:53,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:53,472 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:13:53,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:13:53,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:53,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -996404790, now seen corresponding path program 2 times [2023-08-30 11:13:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:53,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290469897] [2023-08-30 11:13:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290469897] [2023-08-30 11:13:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290469897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988731034] [2023-08-30 11:13:53,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:13:53,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:53,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:53,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:13:53,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:13:53,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:13:53,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:13:53,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:13:53,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988731034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:53,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:13:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739425205] [2023-08-30 11:13:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:13:53,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:53,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:53,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:53,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:54,071 INFO L130 PetriNetUnfolder]: 3326/5096 cut-off events. [2023-08-30 11:13:54,072 INFO L131 PetriNetUnfolder]: For 1008/1008 co-relation queries the response was YES. [2023-08-30 11:13:54,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11918 conditions, 5096 events. 3326/5096 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26944 event pairs, 2855 based on Foata normal form. 1/3877 useless extension candidates. Maximal degree in co-relation 9524. Up to 5096 conditions per place. [2023-08-30 11:13:54,101 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 11:13:54,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 157 flow [2023-08-30 11:13:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 11:13:54,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48778103616813295 [2023-08-30 11:13:54,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 11:13:54,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 11:13:54,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:54,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 11:13:54,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,108 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 109 flow. Second operand 3 states and 499 transitions. [2023-08-30 11:13:54,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 157 flow [2023-08-30 11:13:54,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 145 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:13:54,111 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 89 flow [2023-08-30 11:13:54,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 11:13:54,114 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:13:54,114 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 89 flow [2023-08-30 11:13:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:54,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:54,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:54,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:54,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash -331492260, now seen corresponding path program 1 times [2023-08-30 11:13:54,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:54,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100215000] [2023-08-30 11:13:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:54,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100215000] [2023-08-30 11:13:54,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100215000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:54,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:13:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540307843] [2023-08-30 11:13:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:54,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:54,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:54,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:54,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:54,727 INFO L130 PetriNetUnfolder]: 2956/4536 cut-off events. [2023-08-30 11:13:54,728 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-30 11:13:54,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10340 conditions, 4536 events. 2956/4536 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25345 event pairs, 495 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10331. Up to 3590 conditions per place. [2023-08-30 11:13:54,752 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 11:13:54,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 193 flow [2023-08-30 11:13:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 11:13:54,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49853372434017595 [2023-08-30 11:13:54,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 11:13:54,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 11:13:54,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:54,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 11:13:54,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,759 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 89 flow. Second operand 3 states and 510 transitions. [2023-08-30 11:13:54,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 193 flow [2023-08-30 11:13:54,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:54,761 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 86 flow [2023-08-30 11:13:54,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 11:13:54,763 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:13:54,764 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 86 flow [2023-08-30 11:13:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:54,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:13:54,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:54,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash -331492258, now seen corresponding path program 1 times [2023-08-30 11:13:54,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:54,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112135882] [2023-08-30 11:13:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112135882] [2023-08-30 11:13:54,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112135882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620840168] [2023-08-30 11:13:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:54,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:54,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:13:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:54,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:13:54,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:54,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620840168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:54,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:54,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:13:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86858256] [2023-08-30 11:13:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:54,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:54,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 341 [2023-08-30 11:13:54,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:54,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 341 [2023-08-30 11:13:54,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:55,246 INFO L130 PetriNetUnfolder]: 2365/3630 cut-off events. [2023-08-30 11:13:55,246 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-08-30 11:13:55,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 3630 events. 2365/3630 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18077 event pairs, 2012 based on Foata normal form. 1/2879 useless extension candidates. Maximal degree in co-relation 8420. Up to 3630 conditions per place. [2023-08-30 11:13:55,268 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 11:13:55,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 142 flow [2023-08-30 11:13:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-30 11:13:55,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48191593352883677 [2023-08-30 11:13:55,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-30 11:13:55,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-30 11:13:55,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:55,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-30 11:13:55,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,277 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 86 flow. Second operand 3 states and 493 transitions. [2023-08-30 11:13:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 142 flow [2023-08-30 11:13:55,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:55,279 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 91 flow [2023-08-30 11:13:55,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 11:13:55,280 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-30 11:13:55,280 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 91 flow [2023-08-30 11:13:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:55,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:55,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:55,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:55,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:55,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash 725007857, now seen corresponding path program 1 times [2023-08-30 11:13:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:55,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726078711] [2023-08-30 11:13:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:55,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726078711] [2023-08-30 11:13:55,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726078711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495242821] [2023-08-30 11:13:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:55,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:55,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:55,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:55,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:13:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:55,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:13:55,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:13:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495242821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:13:55,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:13:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 11:13:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304158124] [2023-08-30 11:13:55,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:13:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:13:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:13:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:13:55,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 341 [2023-08-30 11:13:55,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 91 flow. Second operand has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:55,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 341 [2023-08-30 11:13:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:56,646 INFO L130 PetriNetUnfolder]: 2667/4150 cut-off events. [2023-08-30 11:13:56,646 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-30 11:13:56,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9554 conditions, 4150 events. 2667/4150 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22821 event pairs, 786 based on Foata normal form. 32/3446 useless extension candidates. Maximal degree in co-relation 9543. Up to 1355 conditions per place. [2023-08-30 11:13:56,662 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 128 selfloop transitions, 13 changer transitions 7/148 dead transitions. [2023-08-30 11:13:56,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 677 flow [2023-08-30 11:13:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:13:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:13:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2079 transitions. [2023-08-30 11:13:56,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46898263027295284 [2023-08-30 11:13:56,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2079 transitions. [2023-08-30 11:13:56,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2079 transitions. [2023-08-30 11:13:56,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:56,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2079 transitions. [2023-08-30 11:13:56,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.92307692307693) internal successors, (2079), 13 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,681 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,681 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 91 flow. Second operand 13 states and 2079 transitions. [2023-08-30 11:13:56,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 677 flow [2023-08-30 11:13:56,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 148 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:13:56,686 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 177 flow [2023-08-30 11:13:56,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-08-30 11:13:56,687 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 11:13:56,688 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 177 flow [2023-08-30 11:13:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:56,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:56,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:13:56,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:56,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:56,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1152482866, now seen corresponding path program 1 times [2023-08-30 11:13:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261472351] [2023-08-30 11:13:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:56,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261472351] [2023-08-30 11:13:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261472351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:56,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:13:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603258457] [2023-08-30 11:13:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:56,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:56,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:56,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:56,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:56,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:56,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:57,358 INFO L130 PetriNetUnfolder]: 3579/5546 cut-off events. [2023-08-30 11:13:57,358 INFO L131 PetriNetUnfolder]: For 8643/8643 co-relation queries the response was YES. [2023-08-30 11:13:57,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 5546 events. 3579/5546 cut-off events. For 8643/8643 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 30841 event pairs, 2310 based on Foata normal form. 138/4808 useless extension candidates. Maximal degree in co-relation 15662. Up to 4151 conditions per place. [2023-08-30 11:13:57,396 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 11:13:57,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 391 flow [2023-08-30 11:13:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 11:13:57,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004887585532747 [2023-08-30 11:13:57,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 11:13:57,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 11:13:57,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:57,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 11:13:57,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,440 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 177 flow. Second operand 3 states and 512 transitions. [2023-08-30 11:13:57,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 391 flow [2023-08-30 11:13:57,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 359 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-30 11:13:57,446 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 171 flow [2023-08-30 11:13:57,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-08-30 11:13:57,447 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 11:13:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 171 flow [2023-08-30 11:13:57,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:57,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:13:57,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:57,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1610230947, now seen corresponding path program 2 times [2023-08-30 11:13:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:57,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135569958] [2023-08-30 11:13:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:13:57,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:57,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135569958] [2023-08-30 11:13:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135569958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:57,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21447099] [2023-08-30 11:13:57,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:13:57,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:57,504 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:57,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:13:57,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:13:57,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:13:57,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:57,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:13:57,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21447099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:57,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 11:13:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25495708] [2023-08-30 11:13:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:57,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:13:57,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:57,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:57,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:57,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:57,936 INFO L130 PetriNetUnfolder]: 3003/4640 cut-off events. [2023-08-30 11:13:57,937 INFO L131 PetriNetUnfolder]: For 5631/5631 co-relation queries the response was YES. [2023-08-30 11:13:57,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 4640 events. 3003/4640 cut-off events. For 5631/5631 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24186 event pairs, 2646 based on Foata normal form. 120/4536 useless extension candidates. Maximal degree in co-relation 12701. Up to 4640 conditions per place. [2023-08-30 11:13:57,965 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 33 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2023-08-30 11:13:57,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 217 flow [2023-08-30 11:13:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 11:13:57,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858260019550342 [2023-08-30 11:13:57,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 11:13:57,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 11:13:57,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:57,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 11:13:57,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,972 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 171 flow. Second operand 3 states and 497 transitions. [2023-08-30 11:13:57,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 217 flow [2023-08-30 11:13:57,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 207 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:13:57,983 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 137 flow [2023-08-30 11:13:57,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-08-30 11:13:57,985 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-30 11:13:57,985 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 137 flow [2023-08-30 11:13:57,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:57,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:57,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:58,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:58,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1367231076, now seen corresponding path program 1 times [2023-08-30 11:13:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294953190] [2023-08-30 11:13:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294953190] [2023-08-30 11:13:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294953190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892743938] [2023-08-30 11:13:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:58,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:58,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:13:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:58,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:58,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:58,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892743938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:58,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:58,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:13:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265739403] [2023-08-30 11:13:58,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:13:58,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:13:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:58,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 11:13:58,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:58,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:58,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 11:13:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:58,620 INFO L130 PetriNetUnfolder]: 1743/2708 cut-off events. [2023-08-30 11:13:58,620 INFO L131 PetriNetUnfolder]: For 1282/1282 co-relation queries the response was YES. [2023-08-30 11:13:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 2708 events. 1743/2708 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13204 event pairs, 636 based on Foata normal form. 0/2708 useless extension candidates. Maximal degree in co-relation 7393. Up to 1197 conditions per place. [2023-08-30 11:13:58,628 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-08-30 11:13:58,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 409 flow [2023-08-30 11:13:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:13:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:13:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 673 transitions. [2023-08-30 11:13:58,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934017595307918 [2023-08-30 11:13:58,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 673 transitions. [2023-08-30 11:13:58,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 673 transitions. [2023-08-30 11:13:58,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:58,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 673 transitions. [2023-08-30 11:13:58,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:58,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:58,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:58,637 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 137 flow. Second operand 4 states and 673 transitions. [2023-08-30 11:13:58,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 409 flow [2023-08-30 11:13:58,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:58,642 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-30 11:13:58,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-30 11:13:58,642 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-30 11:13:58,642 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-30 11:13:58,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:58,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-30 11:13:58,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-30 11:13:58,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-30 11:13:58,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 11:13:58,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 11:13:58,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 11:13:58,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 11:13:58,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:58,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:58,857 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:58,861 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:13:58,861 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:13:58,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:13:58 BasicIcfg [2023-08-30 11:13:58,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:13:58,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:13:58,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:13:58,865 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:13:58,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:44" (3/4) ... [2023-08-30 11:13:58,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:13:58,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:13:58,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:13:58,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:13:58,877 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 11:13:58,877 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:13:58,877 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:13:58,878 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:13:58,915 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:13:58,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:13:58,915 INFO L158 Benchmark]: Toolchain (without parser) took 15658.48ms. Allocated memory was 71.3MB in the beginning and 620.8MB in the end (delta: 549.5MB). Free memory was 40.0MB in the beginning and 414.7MB in the end (delta: -374.8MB). Peak memory consumption was 174.6MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,916 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:13:58,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.51ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 45.8MB in the end (delta: -6.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.55ms. Allocated memory is still 71.3MB. Free memory was 45.8MB in the beginning and 44.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,918 INFO L158 Benchmark]: Boogie Preprocessor took 38.78ms. Allocated memory is still 71.3MB. Free memory was 44.0MB in the beginning and 42.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:13:58,918 INFO L158 Benchmark]: RCFGBuilder took 638.58ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,920 INFO L158 Benchmark]: TraceAbstraction took 14627.19ms. Allocated memory was 71.3MB in the beginning and 620.8MB in the end (delta: 549.5MB). Free memory was 39.9MB in the beginning and 418.8MB in the end (delta: -378.9MB). Peak memory consumption was 425.3MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,920 INFO L158 Benchmark]: Witness Printer took 50.53ms. Allocated memory is still 620.8MB. Free memory was 418.8MB in the beginning and 414.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:13:58,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.51ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 45.8MB in the end (delta: -6.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.55ms. Allocated memory is still 71.3MB. Free memory was 45.8MB in the beginning and 44.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.78ms. Allocated memory is still 71.3MB. Free memory was 44.0MB in the beginning and 42.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 638.58ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14627.19ms. Allocated memory was 71.3MB in the beginning and 620.8MB in the end (delta: 549.5MB). Free memory was 39.9MB in the beginning and 418.8MB in the end (delta: -378.9MB). Peak memory consumption was 425.3MB. Max. memory is 16.1GB. * Witness Printer took 50.53ms. Allocated memory is still 620.8MB. Free memory was 418.8MB in the beginning and 414.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 154 PlacesBefore, 33 PlacesAfterwards, 155 TransitionsBefore, 26 TransitionsAfterwards, 1604 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 162 TotalNumberOfCompositions, 2248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1553, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 837, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1553, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 205 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.4s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 973 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 835 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 10 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 9 NumberOfNonLiveVariables, 925 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 29/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:13:58,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE