./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.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/test-hard1.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 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 --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 12:05:23,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:05:23,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:05:23,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:05:23,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:05:23,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:05:23,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:05:23,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:05:23,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:05:23,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:05:23,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:05:23,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:05:23,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:05:23,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:05:23,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:05:23,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:05:23,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:05:23,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:05:23,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:05:23,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:05:23,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:05:23,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:05:23,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:05:23,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:05:23,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:05:23,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:05:23,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:05:23,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:05:23,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:05:23,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:05:23,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:05:23,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:05:23,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:05:23,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:05:23,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:05:23,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:05:23,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:05:23,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:05:23,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:05:23,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:05:23,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:05:23,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:05:23,889 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:05:23,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:05:23,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:05:23,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:05:23,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:05:23,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:05:23,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:05:23,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:05:23,893 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:05:23,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:05:23,894 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:05:23,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:05:23,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:05:23,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:05:23,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:05:23,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:05:23,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:23,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:05:23,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:05:23,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:05:23,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:05:23,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:05:23,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:05:23,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:05:23,899 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:05:23,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:05:23,899 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:05:23,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:05:24,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:05:24,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:05:24,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:05:24,302 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:05:24,302 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:05:24,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-30 12:05:25,869 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:05:26,218 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:05:26,219 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-30 12:05:26,226 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2428db9c2/26feb68993224f2abdcdab295531d549/FLAGe395a33fe [2023-08-30 12:05:26,247 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2428db9c2/26feb68993224f2abdcdab295531d549 [2023-08-30 12:05:26,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:05:26,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:05:26,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:26,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:05:26,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:05:26,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf01174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26, skipping insertion in model container [2023-08-30 12:05:26,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:05:26,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:05:26,518 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/test-hard1.wvr.c[3373,3386] [2023-08-30 12:05:26,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:26,536 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:05:26,610 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/test-hard1.wvr.c[3373,3386] [2023-08-30 12:05:26,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:26,640 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:26,640 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:26,646 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:05:26,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26 WrapperNode [2023-08-30 12:05:26,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:26,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:26,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:05:26,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:05:26,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,707 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-08-30 12:05:26,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:26,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:05:26,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:05:26,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:05:26,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:05:26,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:05:26,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:05:26,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:05:26,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (1/1) ... [2023-08-30 12:05:26,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:26,802 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 12:05:26,825 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 12:05:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:05:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:05:26,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:05:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:05:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:05:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 12:05:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 12:05:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 12:05:26,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 12:05:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:05:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:05:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:05:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:05:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:05:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:05:26,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:05:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:05:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:05:26,856 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 12:05:26,974 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:05:26,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:05:27,415 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:05:27,510 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:05:27,516 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 12:05:27,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:27 BoogieIcfgContainer [2023-08-30 12:05:27,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:05:27,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:05:27,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:05:27,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:05:27,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:05:26" (1/3) ... [2023-08-30 12:05:27,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f64cb04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:27, skipping insertion in model container [2023-08-30 12:05:27,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:26" (2/3) ... [2023-08-30 12:05:27,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f64cb04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:27, skipping insertion in model container [2023-08-30 12:05:27,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:27" (3/3) ... [2023-08-30 12:05:27,529 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-30 12:05:27,536 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:05:27,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:05:27,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:05:27,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:05:27,671 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 12:05:27,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 139 transitions, 310 flow [2023-08-30 12:05:27,800 INFO L130 PetriNetUnfolder]: 10/135 cut-off events. [2023-08-30 12:05:27,801 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 12:05:27,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 135 events. 10/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-30 12:05:27,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 139 transitions, 310 flow [2023-08-30 12:05:27,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 115 transitions, 251 flow [2023-08-30 12:05:27,821 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:05:27,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 115 transitions, 251 flow [2023-08-30 12:05:27,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 115 transitions, 251 flow [2023-08-30 12:05:27,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 115 transitions, 251 flow [2023-08-30 12:05:27,884 INFO L130 PetriNetUnfolder]: 9/115 cut-off events. [2023-08-30 12:05:27,884 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:05:27,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 115 events. 9/115 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-30 12:05:27,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-30 12:05:32,805 INFO L134 LiptonReduction]: Checked pairs total: 4931 [2023-08-30 12:05:32,806 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-30 12:05:32,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:05:32,825 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;@14b1fffb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:05:32,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 12:05:32,828 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2023-08-30 12:05:32,829 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:32,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:32,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:05:32,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 12:05:32,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash 17171188, now seen corresponding path program 1 times [2023-08-30 12:05:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860094252] [2023-08-30 12:05:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:33,066 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 12:05:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860094252] [2023-08-30 12:05:33,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860094252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:33,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:33,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792466594] [2023-08-30 12:05:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:33,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:33,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 229 [2023-08-30 12:05:33,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:33,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 229 [2023-08-30 12:05:33,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:33,372 INFO L130 PetriNetUnfolder]: 1162/1732 cut-off events. [2023-08-30 12:05:33,373 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 12:05:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 1732 events. 1162/1732 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9050 event pairs, 1113 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 2662. Up to 1634 conditions per place. [2023-08-30 12:05:33,393 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 24 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 12:05:33,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 137 flow [2023-08-30 12:05:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-30 12:05:33,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254730713245997 [2023-08-30 12:05:33,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-30 12:05:33,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-30 12:05:33,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:33,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-30 12:05:33,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,418 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 99 flow. Second operand 3 states and 361 transitions. [2023-08-30 12:05:33,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 137 flow [2023-08-30 12:05:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 12:05:33,429 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 76 flow [2023-08-30 12:05:33,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-30 12:05:33,434 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -11 predicate places. [2023-08-30 12:05:33,434 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 76 flow [2023-08-30 12:05:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:33,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:05:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:05:33,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 12:05:33,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 427914335, now seen corresponding path program 1 times [2023-08-30 12:05:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798899335] [2023-08-30 12:05:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:33,629 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 12:05:33,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798899335] [2023-08-30 12:05:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798899335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:33,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521316345] [2023-08-30 12:05:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:33,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 229 [2023-08-30 12:05:33,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:33,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 229 [2023-08-30 12:05:33,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:33,786 INFO L130 PetriNetUnfolder]: 664/1023 cut-off events. [2023-08-30 12:05:33,786 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:33,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 1023 events. 664/1023 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4960 event pairs, 624 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 2031. Up to 943 conditions per place. [2023-08-30 12:05:33,791 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-08-30 12:05:33,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 118 flow [2023-08-30 12:05:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-30 12:05:33,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167394468704513 [2023-08-30 12:05:33,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-30 12:05:33,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-30 12:05:33,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:33,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-30 12:05:33,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,801 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 76 flow. Second operand 3 states and 355 transitions. [2023-08-30 12:05:33,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 118 flow [2023-08-30 12:05:33,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:33,802 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-30 12:05:33,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-30 12:05:33,803 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -12 predicate places. [2023-08-30 12:05:33,803 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-30 12:05:33,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:33,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 12:05:33,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 12:05:33,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 12:05:33,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 12:05:33,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 12:05:33,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 12:05:33,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 20 remaining) [2023-08-30 12:05:33,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2023-08-30 12:05:33,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-08-30 12:05:33,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-08-30 12:05:33,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 12:05:33,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 12:05:33,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 12:05:33,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 12:05:33,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 12:05:33,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 12:05:33,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 12:05:33,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 12:05:33,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 12:05:33,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 12:05:33,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:05:33,811 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 12:05:33,816 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:05:33,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:05:33,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:05:33 BasicIcfg [2023-08-30 12:05:33,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:05:33,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:05:33,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:05:33,821 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:05:33,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:27" (3/4) ... [2023-08-30 12:05:33,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:05:33,828 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:05:33,828 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:05:33,828 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 12:05:33,828 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-30 12:05:33,832 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 12:05:33,832 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:05:33,832 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:05:33,832 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:05:33,863 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:05:33,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:05:33,864 INFO L158 Benchmark]: Toolchain (without parser) took 7610.94ms. Allocated memory was 58.7MB in the beginning and 117.4MB in the end (delta: 58.7MB). Free memory was 35.9MB in the beginning and 51.6MB in the end (delta: -15.6MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,864 INFO L158 Benchmark]: CDTParser took 12.41ms. Allocated memory is still 48.2MB. Free memory was 25.6MB in the beginning and 25.6MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:33,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.50ms. Allocated memory is still 58.7MB. Free memory was 35.8MB in the beginning and 38.0MB in the end (delta: -2.2MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 36.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:33,866 INFO L158 Benchmark]: Boogie Preprocessor took 56.37ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 34.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,866 INFO L158 Benchmark]: RCFGBuilder took 754.24ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 43.3MB in the end (delta: -8.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,867 INFO L158 Benchmark]: TraceAbstraction took 6298.26ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 42.6MB in the beginning and 54.6MB in the end (delta: -11.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,867 INFO L158 Benchmark]: Witness Printer took 43.04ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 51.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:05:33,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 12.41ms. Allocated memory is still 48.2MB. Free memory was 25.6MB in the beginning and 25.6MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.50ms. Allocated memory is still 58.7MB. Free memory was 35.8MB in the beginning and 38.0MB in the end (delta: -2.2MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 36.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.37ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 34.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 754.24ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 34.4MB in the beginning and 43.3MB in the end (delta: -8.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6298.26ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 42.6MB in the beginning and 54.6MB in the end (delta: -11.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 43.04ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 51.6MB in the end (delta: 3.0MB). 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: 5.0s, 119 PlacesBefore, 48 PlacesAfterwards, 115 TransitionsBefore, 39 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 8 FixpointIterations, 41 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 90 TotalNumberOfCompositions, 4931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3911, independent: 3841, independent conditional: 0, independent unconditional: 3841, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1194, independent: 1180, independent conditional: 0, independent unconditional: 1180, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3911, independent: 2661, independent conditional: 0, independent unconditional: 2661, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1194, unknown conditional: 0, unknown unconditional: 1194] , Statistics on independence cache: Total cache size (in pairs): 228, Positive cache size: 220, Positive conditional cache size: 0, Positive unconditional cache size: 220, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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 9 procedures, 170 locations, 20 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:05:33,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE