./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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 ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:11:00,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:11:00,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:11:00,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:11:00,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:11:00,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:11:00,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:11:00,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:11:00,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:11:00,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:11:00,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:11:00,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:11:00,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:11:00,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:11:00,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:11:00,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:11:00,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:11:00,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:11:00,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:11:00,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:11:00,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:11:00,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:11:00,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:11:00,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:11:00,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:11:00,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:11:00,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:11:00,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:11:00,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:11:00,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:11:00,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:11:00,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:11:00,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:11:00,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:11:00,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:11:00,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:11:00,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:11:00,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:11:00,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:11:00,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:11:00,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:11:00,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:11:00,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:11:00,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:11:00,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:11:00,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:11:00,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:11:00,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:11:00,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:11:00,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:11:00,970 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:11:00,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:11:00,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:11:00,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:11:00,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:11:00,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:11:00,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:11:00,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:11:00,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:11:00,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:11:00,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2021-12-16 03:11:01,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:11:01,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:11:01,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:11:01,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:11:01,230 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:11:01,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-16 03:11:01,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3836599/c157465ba40a458f91beb7f4c2d7ef72/FLAGa429abd2b [2021-12-16 03:11:01,649 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:11:01,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-16 03:11:01,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3836599/c157465ba40a458f91beb7f4c2d7ef72/FLAGa429abd2b [2021-12-16 03:11:02,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3836599/c157465ba40a458f91beb7f4c2d7ef72 [2021-12-16 03:11:02,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:11:02,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:11:02,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:11:02,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:11:02,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:11:02,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b4a629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02, skipping insertion in model container [2021-12-16 03:11:02,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:11:02,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:11:02,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-12-16 03:11:02,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:11:02,454 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:11:02,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-12-16 03:11:02,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:11:02,583 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:11:02,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02 WrapperNode [2021-12-16 03:11:02,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:11:02,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:11:02,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:11:02,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:11:02,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,674 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-16 03:11:02,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:11:02,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:11:02,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:11:02,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:11:02,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:11:02,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:11:02,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:11:02,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:11:02,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (1/1) ... [2021-12-16 03:11:02,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:11:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:02,770 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) [2021-12-16 03:11:02,775 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 [2021-12-16 03:11:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:11:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:11:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:11:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:11:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:11:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:11:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:11:02,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:11:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:11:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-16 03:11:02,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:11:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:11:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:11:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:11:02,869 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:11:03,004 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:11:03,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:11:03,297 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:11:03,304 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:11:03,306 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-16 03:11:03,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:11:03 BoogieIcfgContainer [2021-12-16 03:11:03,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:11:03,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:11:03,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:11:03,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:11:03,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:11:02" (1/3) ... [2021-12-16 03:11:03,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3225ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:11:03, skipping insertion in model container [2021-12-16 03:11:03,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:11:02" (2/3) ... [2021-12-16 03:11:03,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3225ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:11:03, skipping insertion in model container [2021-12-16 03:11:03,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:11:03" (3/3) ... [2021-12-16 03:11:03,317 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2021-12-16 03:11:03,322 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:11:03,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:11:03,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:11:03,323 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:11:03,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,365 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,365 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,365 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,365 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,366 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,366 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,366 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,366 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,367 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,367 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,368 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,369 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,371 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,372 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,372 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,373 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,373 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,374 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,374 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,376 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,376 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,376 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,376 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,377 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,379 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,380 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,381 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,382 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,383 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,383 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,384 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,388 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,388 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,389 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,389 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,393 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:11:03,397 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-16 03:11:03,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:11:03,446 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:11:03,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-16 03:11:03,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2021-12-16 03:11:03,536 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-12-16 03:11:03,536 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:11:03,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2021-12-16 03:11:03,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2021-12-16 03:11:03,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2021-12-16 03:11:03,563 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2021-12-16 03:11:03,564 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:11:03,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:03,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:03,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash 546892702, now seen corresponding path program 1 times [2021-12-16 03:11:03,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:03,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605346234] [2021-12-16 03:11:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:03,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:11:03,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:03,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605346234] [2021-12-16 03:11:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605346234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:03,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:11:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:11:03,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198400820] [2021-12-16 03:11:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:03,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:11:03,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:11:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:11:03,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2021-12-16 03:11:03,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:03,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:03,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2021-12-16 03:11:03,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:03,888 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2021-12-16 03:11:03,888 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-16 03:11:03,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2021-12-16 03:11:03,892 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-12-16 03:11:03,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2021-12-16 03:11:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:11:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-16 03:11:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2021-12-16 03:11:03,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-12-16 03:11:03,910 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2021-12-16 03:11:03,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2021-12-16 03:11:03,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:03,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2021-12-16 03:11:03,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:03,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:03,919 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:03,921 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2021-12-16 03:11:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2021-12-16 03:11:03,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:11:03,927 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2021-12-16 03:11:03,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2021-12-16 03:11:03,932 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2021-12-16 03:11:03,932 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2021-12-16 03:11:03,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:03,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:03,933 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:03,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:11:03,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2021-12-16 03:11:03,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594166741] [2021-12-16 03:11:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:03,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:11:04,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:04,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594166741] [2021-12-16 03:11:04,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594166741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:04,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:11:04,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:11:04,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693865302] [2021-12-16 03:11:04,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:04,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:11:04,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:11:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:11:04,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2021-12-16 03:11:04,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:04,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2021-12-16 03:11:04,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:04,134 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2021-12-16 03:11:04,134 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 03:11:04,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2021-12-16 03:11:04,138 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-16 03:11:04,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2021-12-16 03:11:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:11:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:11:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2021-12-16 03:11:04,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2021-12-16 03:11:04,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2021-12-16 03:11:04,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2021-12-16 03:11:04,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:04,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2021-12-16 03:11:04,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,148 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2021-12-16 03:11:04,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2021-12-16 03:11:04,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:11:04,151 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2021-12-16 03:11:04,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2021-12-16 03:11:04,152 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2021-12-16 03:11:04,152 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2021-12-16 03:11:04,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:04,153 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:04,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:11:04,153 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2021-12-16 03:11:04,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:04,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849462655] [2021-12-16 03:11:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:04,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:11:04,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:04,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849462655] [2021-12-16 03:11:04,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849462655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:11:04,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58505356] [2021-12-16 03:11:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:04,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:04,311 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) [2021-12-16 03:11:04,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:11:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:04,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:11:04,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:11:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:11:04,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:11:04,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58505356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:04,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:11:04,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-16 03:11:04,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725080406] [2021-12-16 03:11:04,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:04,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:11:04,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:11:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:11:04,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2021-12-16 03:11:04,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:04,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2021-12-16 03:11:04,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:04,608 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2021-12-16 03:11:04,609 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-12-16 03:11:04,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2021-12-16 03:11:04,611 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2021-12-16 03:11:04,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2021-12-16 03:11:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:11:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:11:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2021-12-16 03:11:04,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-12-16 03:11:04,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2021-12-16 03:11:04,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2021-12-16 03:11:04,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:04,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2021-12-16 03:11:04,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,616 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2021-12-16 03:11:04,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2021-12-16 03:11:04,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:11:04,619 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2021-12-16 03:11:04,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2021-12-16 03:11:04,619 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2021-12-16 03:11:04,620 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2021-12-16 03:11:04,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:04,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:04,620 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:04,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:11:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:04,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2021-12-16 03:11:04,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:04,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118936322] [2021-12-16 03:11:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:04,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:11:04,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:04,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118936322] [2021-12-16 03:11:04,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118936322] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:11:04,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822868361] [2021-12-16 03:11:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:04,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:04,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:04,930 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) [2021-12-16 03:11:04,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:11:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:05,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 03:11:05,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:11:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:11:05,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:11:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:11:05,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822868361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:11:05,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:11:05,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-16 03:11:05,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67184644] [2021-12-16 03:11:05,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:11:05,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:11:05,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:11:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:11:05,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2021-12-16 03:11:05,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 9 states, 9 states have (on average 120.33333333333333) internal successors, (1083), 9 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:05,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2021-12-16 03:11:05,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:05,392 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2021-12-16 03:11:05,393 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:11:05,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2021-12-16 03:11:05,395 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2021-12-16 03:11:05,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2021-12-16 03:11:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:11:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:11:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2021-12-16 03:11:05,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2021-12-16 03:11:05,397 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2021-12-16 03:11:05,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2021-12-16 03:11:05,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:05,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2021-12-16 03:11:05,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,420 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2021-12-16 03:11:05,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2021-12-16 03:11:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:11:05,423 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2021-12-16 03:11:05,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-16 03:11:05,424 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2021-12-16 03:11:05,424 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2021-12-16 03:11:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.33333333333333) internal successors, (1083), 9 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,424 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:05,425 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:05,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:11:05,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-16 03:11:05,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2021-12-16 03:11:05,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:05,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731361589] [2021-12-16 03:11:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:05,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:11:05,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731361589] [2021-12-16 03:11:05,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731361589] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:11:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780283798] [2021-12-16 03:11:05,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:11:05,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:05,725 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) [2021-12-16 03:11:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:11:05,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:11:05,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:11:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 03:11:05,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:11:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:11:05,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:11:05,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780283798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:05,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:11:05,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-16 03:11:05,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158622637] [2021-12-16 03:11:05,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:05,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:11:05,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:11:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:11:05,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2021-12-16 03:11:05,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:05,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:05,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2021-12-16 03:11:05,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:06,185 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2021-12-16 03:11:06,186 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-16 03:11:06,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7018 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2021-12-16 03:11:06,198 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2021-12-16 03:11:06,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2021-12-16 03:11:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:11:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:11:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2021-12-16 03:11:06,201 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2021-12-16 03:11:06,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2021-12-16 03:11:06,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2021-12-16 03:11:06,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:06,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2021-12-16 03:11:06,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:06,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:06,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:06,233 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2021-12-16 03:11:06,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2021-12-16 03:11:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-16 03:11:06,237 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2021-12-16 03:11:06,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2021-12-16 03:11:06,238 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2021-12-16 03:11:06,238 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2021-12-16 03:11:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:06,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:06,238 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:06,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:11:06,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:06,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1479845303, now seen corresponding path program 3 times [2021-12-16 03:11:06,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:06,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373555553] [2021-12-16 03:11:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:06,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-16 03:11:06,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373555553] [2021-12-16 03:11:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373555553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:11:06,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884380360] [2021-12-16 03:11:06,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:11:06,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:06,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:11:06,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:11:06,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-16 03:11:06,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:11:06,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:11:06,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:11:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-16 03:11:06,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:11:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884380360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:06,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:11:06,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-12-16 03:11:06,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510225099] [2021-12-16 03:11:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:06,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:11:06,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:11:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:11:06,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2021-12-16 03:11:06,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:06,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:06,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2021-12-16 03:11:06,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:07,074 INFO L129 PetriNetUnfolder]: 325/1306 cut-off events. [2021-12-16 03:11:07,074 INFO L130 PetriNetUnfolder]: For 1252/1377 co-relation queries the response was YES. [2021-12-16 03:11:07,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 1306 events. 325/1306 cut-off events. For 1252/1377 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7155 event pairs, 12 based on Foata normal form. 90/1392 useless extension candidates. Maximal degree in co-relation 2999. Up to 159 conditions per place. [2021-12-16 03:11:07,082 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 33 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2021-12-16 03:11:07,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 186 transitions, 809 flow [2021-12-16 03:11:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:11:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 03:11:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1179 transitions. [2021-12-16 03:11:07,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2021-12-16 03:11:07,085 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1179 transitions. [2021-12-16 03:11:07,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1179 transitions. [2021-12-16 03:11:07,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:07,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1179 transitions. [2021-12-16 03:11:07,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.9) internal successors, (1179), 10 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,090 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 10 states and 1179 transitions. [2021-12-16 03:11:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 186 transitions, 809 flow [2021-12-16 03:11:07,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 186 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:11:07,097 INFO L242 Difference]: Finished difference. Result has 159 places, 169 transitions, 765 flow [2021-12-16 03:11:07,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=765, PETRI_PLACES=159, PETRI_TRANSITIONS=169} [2021-12-16 03:11:07,099 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 39 predicate places. [2021-12-16 03:11:07,099 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 169 transitions, 765 flow [2021-12-16 03:11:07,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,099 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:07,100 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:07,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:11:07,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:07,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 186061792, now seen corresponding path program 4 times [2021-12-16 03:11:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140169089] [2021-12-16 03:11:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:07,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 03:11:07,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:07,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140169089] [2021-12-16 03:11:07,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140169089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:11:07,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:11:07,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:11:07,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117529645] [2021-12-16 03:11:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:11:07,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:11:07,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:11:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:11:07,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2021-12-16 03:11:07,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 169 transitions, 765 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:07,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2021-12-16 03:11:07,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:07,462 INFO L129 PetriNetUnfolder]: 78/626 cut-off events. [2021-12-16 03:11:07,463 INFO L130 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2021-12-16 03:11:07,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 626 events. 78/626 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2554 event pairs, 6 based on Foata normal form. 61/687 useless extension candidates. Maximal degree in co-relation 1416. Up to 90 conditions per place. [2021-12-16 03:11:07,466 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2021-12-16 03:11:07,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 525 flow [2021-12-16 03:11:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:11:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-16 03:11:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-12-16 03:11:07,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2021-12-16 03:11:07,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-12-16 03:11:07,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-12-16 03:11:07,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:07,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-12-16 03:11:07,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,469 INFO L186 Difference]: Start difference. First operand has 159 places, 169 transitions, 765 flow. Second operand 3 states and 349 transitions. [2021-12-16 03:11:07,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 525 flow [2021-12-16 03:11:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 137 transitions, 463 flow, removed 12 selfloop flow, removed 12 redundant places. [2021-12-16 03:11:07,474 INFO L242 Difference]: Finished difference. Result has 146 places, 135 transitions, 425 flow [2021-12-16 03:11:07,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=146, PETRI_TRANSITIONS=135} [2021-12-16 03:11:07,475 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 26 predicate places. [2021-12-16 03:11:07,475 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 135 transitions, 425 flow [2021-12-16 03:11:07,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:07,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:07,475 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:07,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:11:07,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:07,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1561621710, now seen corresponding path program 5 times [2021-12-16 03:11:07,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:07,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342861598] [2021-12-16 03:11:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:07,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:11:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 03:11:07,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:11:07,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342861598] [2021-12-16 03:11:07,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342861598] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:11:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418531449] [2021-12-16 03:11:07,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 03:11:07,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:11:07,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:11:07,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:11:07,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-16 03:11:07,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:11:07,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:11:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:11:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 03:11:07,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:11:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 03:11:08,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418531449] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:11:08,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:11:08,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-12-16 03:11:08,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471518800] [2021-12-16 03:11:08,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:11:08,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:11:08,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:11:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:11:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:11:08,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2021-12-16 03:11:08,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 425 flow. Second operand has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:08,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:11:08,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2021-12-16 03:11:08,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:11:08,331 INFO L129 PetriNetUnfolder]: 117/877 cut-off events. [2021-12-16 03:11:08,331 INFO L130 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2021-12-16 03:11:08,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 877 events. 117/877 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4446 event pairs, 5 based on Foata normal form. 11/881 useless extension candidates. Maximal degree in co-relation 1767. Up to 114 conditions per place. [2021-12-16 03:11:08,340 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 19 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2021-12-16 03:11:08,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 515 flow [2021-12-16 03:11:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:11:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:11:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2021-12-16 03:11:08,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2021-12-16 03:11:08,343 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2021-12-16 03:11:08,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2021-12-16 03:11:08,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:11:08,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2021-12-16 03:11:08,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.33333333333333) internal successors, (1074), 9 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:08,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:08,350 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:08,350 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 425 flow. Second operand 9 states and 1074 transitions. [2021-12-16 03:11:08,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 515 flow [2021-12-16 03:11:08,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:11:08,356 INFO L242 Difference]: Finished difference. Result has 156 places, 141 transitions, 467 flow [2021-12-16 03:11:08,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2021-12-16 03:11:08,357 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 36 predicate places. [2021-12-16 03:11:08,357 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 467 flow [2021-12-16 03:11:08,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.55555555555556) internal successors, (1067), 9 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:11:08,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:11:08,358 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:11:08,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:11:08,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:11:08,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 03:11:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:11:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash 459318713, now seen corresponding path program 6 times [2021-12-16 03:11:08,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:11:08,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516024319] [2021-12-16 03:11:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:11:08,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:11:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:11:08,623 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 03:11:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:11:08,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 03:11:08,690 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 03:11:08,691 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-16 03:11:08,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-16 03:11:08,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-16 03:11:08,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:11:08,696 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-12-16 03:11:08,700 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 03:11:08,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:11:08,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:11:08 BasicIcfg [2021-12-16 03:11:08,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:11:08,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:11:08,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:11:08,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:11:08,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:11:03" (3/4) ... [2021-12-16 03:11:08,768 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 03:11:08,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 03:11:08,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:11:08,825 INFO L158 Benchmark]: Toolchain (without parser) took 6793.48ms. Allocated memory was 127.9MB in the beginning and 239.1MB in the end (delta: 111.1MB). Free memory was 84.9MB in the beginning and 85.6MB in the end (delta: -678.8kB). Peak memory consumption was 110.0MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,826 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:11:08,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.31ms. Allocated memory is still 127.9MB. Free memory was 84.8MB in the beginning and 85.5MB in the end (delta: -700.6kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.48ms. Allocated memory is still 127.9MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,826 INFO L158 Benchmark]: Boogie Preprocessor took 54.81ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:11:08,827 INFO L158 Benchmark]: RCFGBuilder took 577.94ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 67.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,827 INFO L158 Benchmark]: TraceAbstraction took 5455.52ms. Allocated memory was 127.9MB in the beginning and 239.1MB in the end (delta: 111.1MB). Free memory was 66.6MB in the beginning and 110.8MB in the end (delta: -44.2MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,827 INFO L158 Benchmark]: Witness Printer took 58.90ms. Allocated memory is still 239.1MB. Free memory was 110.8MB in the beginning and 85.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-16 03:11:08,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.31ms. Allocated memory is still 127.9MB. Free memory was 84.8MB in the beginning and 85.5MB in the end (delta: -700.6kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.48ms. Allocated memory is still 127.9MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.81ms. Allocated memory is still 127.9MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 577.94ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 67.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5455.52ms. Allocated memory was 127.9MB in the beginning and 239.1MB in the end (delta: 111.1MB). Free memory was 66.6MB in the beginning and 110.8MB in the end (delta: -44.2MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * Witness Printer took 58.90ms. Allocated memory is still 239.1MB. Free memory was 110.8MB in the beginning and 85.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; VAL [num=0] [L871] 0 unsigned long total; VAL [num=0, total=0] [L872] 0 int flag; VAL [flag=0, num=0, total=0] [L873] 0 pthread_mutex_t m; VAL [flag=0, m={3:0}, num=0, total=0] [L874] 0 pthread_cond_t empty, full; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L907] 0 pthread_t t1, t2; VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L908] 0 num = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L909] 0 total = 0 VAL [empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, total=0] [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0] [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L887] 1 return ((void *)0); VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, total=1] [L915] 0 \read(t1) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=1] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=1, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=1] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L896] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L902] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L903] 2 flag = 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L904] 2 return ((void *)0); VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6] [L916] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 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: 5.3s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 45 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 861 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=6, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1692 NumberOfCodeBlocks, 1692 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1774 ConstructedInterpolants, 0 QuantifiedInterpolants, 2538 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1630 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 272/356 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 RESULT: Ultimate proved your program to be incorrect! [2021-12-16 03:11:08,858 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE