./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-2.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/unroll-2.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 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf --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 12:05:44,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:05:44,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:05:44,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:05:44,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:05:44,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:05:44,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:05:44,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:05:44,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:05:44,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:05:44,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:05:44,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:05:44,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:05:44,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:05:44,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:05:44,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:05:44,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:05:44,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:05:44,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:05:44,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:05:44,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:05:44,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:05:44,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:05:44,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:05:44,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:05:44,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:05:44,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:05:44,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:05:44,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:05:44,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:05:44,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:05:44,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:05:44,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:05:44,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:05:44,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:05:44,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:05:44,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:05:44,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:05:44,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:05:44,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:05:44,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:05:44,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:05:44,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:05:44,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:05:44,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:05:44,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:05:44,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:05:44,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:05:44,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:05:44,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:05:44,695 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:05:44,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:05:44,696 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:05:44,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:05:44,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:05:44,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:05:44,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:05:44,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:05:44,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:05:44,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:05:44,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:05:44,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:05:44,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:05:44,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:44,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:05:44,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:05:44,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:05:44,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:05:44,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:05:44,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:05:44,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:05:44,701 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:05:44,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:05:44,701 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:05:44,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5393d9cf3b7cc0865f031a716dd61208c034931418b29464b30da9c6eaf669bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:05:45,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:05:45,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:05:45,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:05:45,040 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:05:45,040 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:05:45,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-30 12:05:46,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:05:46,495 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:05:46,496 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2023-08-30 12:05:46,502 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95cafbcfb/6afbf02431d54d51acf60e56a7970c0c/FLAGe0be48246 [2023-08-30 12:05:46,515 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95cafbcfb/6afbf02431d54d51acf60e56a7970c0c [2023-08-30 12:05:46,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:05:46,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:05:46,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:46,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:05:46,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:05:46,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96de117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46, skipping insertion in model container [2023-08-30 12:05:46,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:05:46,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:05:46,668 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/unroll-2.wvr.c[2428,2441] [2023-08-30 12:05:46,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:46,682 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:05:46,705 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/unroll-2.wvr.c[2428,2441] [2023-08-30 12:05:46,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:46,728 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:05:46,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46 WrapperNode [2023-08-30 12:05:46,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:46,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:46,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:05:46,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:05:46,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,780 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 139 [2023-08-30 12:05:46,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:46,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:05:46,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:05:46,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:05:46,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:05:46,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:05:46,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:05:46,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:05:46,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (1/1) ... [2023-08-30 12:05:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:46,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:05:46,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:05:46,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:05:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:05:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:05:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:05:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:05:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:05:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:05:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:05:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:05:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:05:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:05:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:05:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:05:46,901 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:05:47,007 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:05:47,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:05:47,369 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:05:47,377 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:05:47,378 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 12:05:47,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:47 BoogieIcfgContainer [2023-08-30 12:05:47,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:05:47,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:05:47,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:05:47,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:05:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:05:46" (1/3) ... [2023-08-30 12:05:47,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0bd536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:47, skipping insertion in model container [2023-08-30 12:05:47,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:46" (2/3) ... [2023-08-30 12:05:47,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0bd536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:47, skipping insertion in model container [2023-08-30 12:05:47,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:47" (3/3) ... [2023-08-30 12:05:47,388 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2023-08-30 12:05:47,398 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:05:47,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:05:47,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 12:05:47,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:05:47,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:05:47,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 334 flow [2023-08-30 12:05:47,548 INFO L130 PetriNetUnfolder]: 14/157 cut-off events. [2023-08-30 12:05:47,549 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:05:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 14/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-30 12:05:47,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 159 transitions, 334 flow [2023-08-30 12:05:47,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-08-30 12:05:47,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:05:47,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:05:47,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:05:47,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-08-30 12:05:47,584 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-08-30 12:05:47,584 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:47,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 62 events. 4/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 12:05:47,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-30 12:05:51,111 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-30 12:05:51,111 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-30 12:05:51,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:05:51,136 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;@51920e3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:05:51,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 12:05:51,139 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:05:51,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:51,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:51,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:05:51,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:05:51,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash 17219, now seen corresponding path program 1 times [2023-08-30 12:05:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:51,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278518474] [2023-08-30 12:05:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:51,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:51,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278518474] [2023-08-30 12:05:51,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278518474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:51,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:51,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:51,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704014302] [2023-08-30 12:05:51,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 12:05:51,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:51,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 12:05:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:51,400 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 12:05:51,400 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:51,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 1/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-30 12:05:51,401 INFO L137 encePairwiseOnDemand]: 234/236 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2023-08-30 12:05:51,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2023-08-30 12:05:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 12:05:51,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988700564971752 [2023-08-30 12:05:51,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 12:05:51,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 12:05:51,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:51,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 12:05:51,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,429 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 424 transitions. [2023-08-30 12:05:51,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2023-08-30 12:05:51,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:05:51,432 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2023-08-30 12:05:51,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2023-08-30 12:05:51,436 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2023-08-30 12:05:51,436 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2023-08-30 12:05:51,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:51,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:05:51,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:05:51,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:05:51,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash 17224, now seen corresponding path program 1 times [2023-08-30 12:05:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333113626] [2023-08-30 12:05:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:51,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333113626] [2023-08-30 12:05:51,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333113626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342723500] [2023-08-30 12:05:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:51,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 12:05:51,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:51,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 12:05:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:51,561 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-08-30 12:05:51,561 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:51,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2023-08-30 12:05:51,562 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-08-30 12:05:51,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2023-08-30 12:05:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 12:05:51,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002824858757062 [2023-08-30 12:05:51,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 12:05:51,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 12:05:51,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:51,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 12:05:51,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,569 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 425 transitions. [2023-08-30 12:05:51,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2023-08-30 12:05:51,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:51,571 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2023-08-30 12:05:51,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=7, PETRI_TRANSITIONS=4} [2023-08-30 12:05:51,572 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-08-30 12:05:51,572 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2023-08-30 12:05:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:05:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:05:51,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:05:51,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash 535079, now seen corresponding path program 1 times [2023-08-30 12:05:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807754777] [2023-08-30 12:05:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:51,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:51,639 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 12:05:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807754777] [2023-08-30 12:05:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807754777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:05:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297551296] [2023-08-30 12:05:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:51,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:05:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:51,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:05:51,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:05:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:51,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:05:51,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:05:51,754 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 12:05:51,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:05:51,768 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 12:05:51,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297551296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:05:51,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:05:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 12:05:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214754551] [2023-08-30 12:05:51,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:05:51,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:05:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:05:51,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:05:51,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 12:05:51,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:51,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 12:05:51,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:51,806 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-08-30 12:05:51,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2023-08-30 12:05:51,806 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-08-30 12:05:51,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 45 flow [2023-08-30 12:05:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:05:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:05:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 850 transitions. [2023-08-30 12:05:51,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002824858757062 [2023-08-30 12:05:51,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 850 transitions. [2023-08-30 12:05:51,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 850 transitions. [2023-08-30 12:05:51,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:51,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 850 transitions. [2023-08-30 12:05:51,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,816 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,816 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 6 states and 850 transitions. [2023-08-30 12:05:51,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 45 flow [2023-08-30 12:05:51,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 41 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:51,817 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-08-30 12:05:51,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-08-30 12:05:51,818 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-08-30 12:05:51,818 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-08-30 12:05:51,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:51,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:51,819 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:05:51,827 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 12:05:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:05:52,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:05:52,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1238203640, now seen corresponding path program 2 times [2023-08-30 12:05:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898228709] [2023-08-30 12:05:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:52,178 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 12:05:52,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898228709] [2023-08-30 12:05:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898228709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:05:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98408377] [2023-08-30 12:05:52,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:05:52,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:05:52,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:52,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:05:52,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:05:52,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:05:52,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:05:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:05:52,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:05:52,281 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 12:05:52,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:05:52,344 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 12:05:52,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98408377] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:05:52,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:05:52,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 12:05:52,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780891598] [2023-08-30 12:05:52,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:05:52,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:05:52,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:05:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:05:52,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 236 [2023-08-30 12:05:52,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 13 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:52,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:52,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 236 [2023-08-30 12:05:52,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:52,432 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 12:05:52,433 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 12:05:52,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 13 events. 1/13 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 6/19 useless extension candidates. Maximal degree in co-relation 52. Up to 13 conditions per place. [2023-08-30 12:05:52,433 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 2 selfloop transitions, 11 changer transitions 0/13 dead transitions. [2023-08-30 12:05:52,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 113 flow [2023-08-30 12:05:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:05:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:05:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1699 transitions. [2023-08-30 12:05:52,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5999293785310734 [2023-08-30 12:05:52,441 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1699 transitions. [2023-08-30 12:05:52,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1699 transitions. [2023-08-30 12:05:52,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:52,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1699 transitions. [2023-08-30 12:05:52,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.58333333333334) internal successors, (1699), 12 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:52,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:52,452 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:52,452 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 12 states and 1699 transitions. [2023-08-30 12:05:52,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 113 flow [2023-08-30 12:05:52,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 99 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:52,462 INFO L231 Difference]: Finished difference. Result has 30 places, 13 transitions, 121 flow [2023-08-30 12:05:52,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=121, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2023-08-30 12:05:52,464 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 26 predicate places. [2023-08-30 12:05:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 13 transitions, 121 flow [2023-08-30 12:05:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:52,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:52,465 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 12:05:52,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:05:52,671 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,SelfDestructingSolverStorable3 [2023-08-30 12:05:52,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:05:52,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 294772392, now seen corresponding path program 3 times [2023-08-30 12:05:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393582004] [2023-08-30 12:05:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393582004] [2023-08-30 12:05:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393582004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:05:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452094984] [2023-08-30 12:05:52,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:05:52,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:05:52,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:52,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:05:52,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:05:53,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 12:05:53,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:05:53,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:05:53,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:05:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 12:05:53,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:05:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 12:05:53,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452094984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:05:53,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:05:53,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-08-30 12:05:53,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647154704] [2023-08-30 12:05:53,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:05:53,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:05:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:05:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:05:53,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 236 [2023-08-30 12:05:53,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 13 transitions, 121 flow. Second operand has 15 states, 15 states have (on average 138.06666666666666) internal successors, (2071), 15 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:53,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:53,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 236 [2023-08-30 12:05:53,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:53,344 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 12:05:53,345 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 12:05:53,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 13 events. 1/13 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2023-08-30 12:05:53,346 INFO L137 encePairwiseOnDemand]: 233/236 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-30 12:05:53,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 13 transitions, 133 flow [2023-08-30 12:05:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:05:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:05:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1933 transitions. [2023-08-30 12:05:53,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850484261501211 [2023-08-30 12:05:53,351 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1933 transitions. [2023-08-30 12:05:53,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1933 transitions. [2023-08-30 12:05:53,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:53,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1933 transitions. [2023-08-30 12:05:53,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.07142857142858) internal successors, (1933), 14 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:53,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 236.0) internal successors, (3540), 15 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:53,364 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 236.0) internal successors, (3540), 15 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:53,364 INFO L175 Difference]: Start difference. First operand has 30 places, 13 transitions, 121 flow. Second operand 14 states and 1933 transitions. [2023-08-30 12:05:53,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 13 transitions, 133 flow [2023-08-30 12:05:53,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 59 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-08-30 12:05:53,367 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 12:05:53,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-30 12:05:53,371 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 23 predicate places. [2023-08-30 12:05:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 12:05:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 138.06666666666666) internal successors, (2071), 15 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:53,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-08-30 12:05:53,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-08-30 12:05:53,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 12:05:53,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 12:05:53,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:05:53,581 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 12:05:53,581 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-30 12:05:53,584 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:05:53,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:05:53,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:05:53 BasicIcfg [2023-08-30 12:05:53,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:05:53,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:05:53,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:05:53,590 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:05:53,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:47" (3/4) ... [2023-08-30 12:05:53,595 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:05:53,600 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:05:53,600 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:05:53,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-30 12:05:53,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:05:53,606 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:05:53,607 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:05:53,653 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:05:53,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:05:53,654 INFO L158 Benchmark]: Toolchain (without parser) took 7135.65ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 54.0MB in the beginning and 78.2MB in the end (delta: -24.2MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,654 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 75.5MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:53,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.22ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 42.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.44ms. Allocated memory is still 75.5MB. Free memory was 42.7MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,656 INFO L158 Benchmark]: Boogie Preprocessor took 47.98ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 39.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,656 INFO L158 Benchmark]: RCFGBuilder took 549.32ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 39.0MB in the beginning and 76.3MB in the end (delta: -37.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,656 INFO L158 Benchmark]: TraceAbstraction took 6205.41ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 75.6MB in the beginning and 82.0MB in the end (delta: -6.4MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,657 INFO L158 Benchmark]: Witness Printer took 63.71ms. Allocated memory is still 134.2MB. Free memory was 82.0MB in the beginning and 78.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:05:53,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 75.5MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.22ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 42.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.44ms. Allocated memory is still 75.5MB. Free memory was 42.7MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.98ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 39.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.32ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 39.0MB in the beginning and 76.3MB in the end (delta: -37.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6205.41ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 75.6MB in the beginning and 82.0MB in the end (delta: -6.4MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * Witness Printer took 63.71ms. Allocated memory is still 134.2MB. Free memory was 82.0MB in the beginning and 78.2MB in the end (delta: 3.8MB). 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: 3.5s, 59 PlacesBefore, 4 PlacesAfterwards, 62 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 77 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 194 locations, 4 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: 6.1s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 46 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 3 NumberOfNonLiveVariables, 338 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 90/198 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:05:53,681 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