./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 [2021-12-17 23:24:37,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:24:37,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:24:37,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:24:37,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:24:37,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:24:37,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:24:37,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:24:37,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:24:37,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:24:37,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:24:37,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:24:37,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:24:37,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:24:37,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:24:37,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:24:37,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:24:37,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:24:37,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:24:37,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:24:37,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:24:37,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:24:37,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:24:37,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:24:37,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:24:37,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:24:37,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:24:37,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:24:37,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:24:37,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:24:37,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:24:37,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:24:37,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:24:37,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:24:37,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:24:37,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:24:37,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:24:37,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:24:37,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:24:37,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:24:37,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:24:37,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:24:37,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:24:37,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:24:37,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:24:37,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:24:37,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:24:37,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:24:37,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:24:37,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:24:37,948 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:24:37,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:24:37,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:24:37,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:24:37,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:24:37,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:24:37,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:24:37,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:24:37,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:24:37,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:24:37,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:24:37,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:24:37,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:24:37,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:24:37,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:24:37,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:24:37,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:24:37,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:24:37,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:24:37,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:24:37,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:24:37,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2021-12-17 23:24:38,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:24:38,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:24:38,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:24:38,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:24:38,183 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:24:38,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-17 23:24:38,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e46b49ca/4e517292b2f94897aad12f176d93a327/FLAG758d73bdc [2021-12-17 23:24:38,772 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:24:38,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-12-17 23:24:38,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e46b49ca/4e517292b2f94897aad12f176d93a327/FLAG758d73bdc [2021-12-17 23:24:39,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e46b49ca/4e517292b2f94897aad12f176d93a327 [2021-12-17 23:24:39,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:24:39,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:24:39,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:24:39,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:24:39,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:24:39,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16065042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39, skipping insertion in model container [2021-12-17 23:24:39,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:24:39,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:24:39,650 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] [2021-12-17 23:24:39,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:24:39,673 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:24:39,733 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] [2021-12-17 23:24:39,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:24:39,772 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:24:39,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39 WrapperNode [2021-12-17 23:24:39,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:24:39,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:24:39,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:24:39,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:24:39,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,819 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-17 23:24:39,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:24:39,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:24:39,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:24:39,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:24:39,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:24:39,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:24:39,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:24:39,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:24:39,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (1/1) ... [2021-12-17 23:24:39,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:24:39,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:39,891 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) [2021-12-17 23:24:39,921 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 [2021-12-17 23:24:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:24:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:24:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-17 23:24:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:24:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 23:24:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 23:24:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 23:24:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 23:24:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:24:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-17 23:24:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:24:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:24:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:24:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:24:39,945 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 23:24:40,093 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:24:40,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:24:40,336 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:24:40,345 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:24:40,346 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 23:24:40,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:24:40 BoogieIcfgContainer [2021-12-17 23:24:40,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:24:40,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:24:40,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:24:40,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:24:40,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:24:39" (1/3) ... [2021-12-17 23:24:40,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a84f8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:24:40, skipping insertion in model container [2021-12-17 23:24:40,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:24:39" (2/3) ... [2021-12-17 23:24:40,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a84f8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:24:40, skipping insertion in model container [2021-12-17 23:24:40,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:24:40" (3/3) ... [2021-12-17 23:24:40,356 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2021-12-17 23:24:40,360 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:24:40,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:24:40,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:24:40,360 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:24:40,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,406 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,407 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,408 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,408 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,408 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,408 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,409 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,414 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,415 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,417 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,418 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,418 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,418 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,419 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,435 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,435 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,436 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,436 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,437 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,437 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,437 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,447 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,447 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,448 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,452 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,452 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,452 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,452 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,452 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,453 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,453 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:24:40,459 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 23:24:40,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:24:40,518 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 [2021-12-17 23:24:40,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 23:24:40,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2021-12-17 23:24:40,597 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-12-17 23:24:40,598 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 23:24:40,601 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. [2021-12-17 23:24:40,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2021-12-17 23:24:40,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2021-12-17 23:24:40,645 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2021-12-17 23:24:40,645 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 23:24:40,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:40,646 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] [2021-12-17 23:24:40,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash 546892702, now seen corresponding path program 1 times [2021-12-17 23:24:40,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:40,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233137412] [2021-12-17 23:24:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:40,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:24:40,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:40,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233137412] [2021-12-17 23:24:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233137412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:40,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:24:40,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:24:40,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694712325] [2021-12-17 23:24:40,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:40,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:24:40,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:24:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:24:40,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2021-12-17 23:24:40,935 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) [2021-12-17 23:24:40,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:40,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2021-12-17 23:24:40,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:40,972 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2021-12-17 23:24:40,972 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-17 23:24:40,974 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. [2021-12-17 23:24:40,975 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-12-17 23:24:40,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2021-12-17 23:24:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:24:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:24:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2021-12-17 23:24:40,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-12-17 23:24:40,992 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2021-12-17 23:24:40,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2021-12-17 23:24:40,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:40,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2021-12-17 23:24:41,002 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) [2021-12-17 23:24:41,014 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) [2021-12-17 23:24:41,015 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) [2021-12-17 23:24:41,017 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2021-12-17 23:24:41,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2021-12-17 23:24:41,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 23:24:41,025 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2021-12-17 23:24:41,027 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} [2021-12-17 23:24:41,032 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2021-12-17 23:24:41,033 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2021-12-17 23:24:41,033 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) [2021-12-17 23:24:41,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:41,034 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] [2021-12-17 23:24:41,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:24:41,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2021-12-17 23:24:41,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:41,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013078745] [2021-12-17 23:24:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:41,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:24:41,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:41,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013078745] [2021-12-17 23:24:41,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013078745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:41,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:24:41,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:24:41,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320890215] [2021-12-17 23:24:41,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:41,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:24:41,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:24:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:24:41,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2021-12-17 23:24:41,213 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) [2021-12-17 23:24:41,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:41,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2021-12-17 23:24:41,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:41,277 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2021-12-17 23:24:41,277 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 23:24:41,281 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. [2021-12-17 23:24:41,283 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-17 23:24:41,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2021-12-17 23:24:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:24:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:24:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2021-12-17 23:24:41,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2021-12-17 23:24:41,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2021-12-17 23:24:41,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2021-12-17 23:24:41,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:41,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2021-12-17 23:24:41,291 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) [2021-12-17 23:24:41,293 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) [2021-12-17 23:24:41,294 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) [2021-12-17 23:24:41,295 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2021-12-17 23:24:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2021-12-17 23:24:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:24:41,299 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2021-12-17 23:24:41,300 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} [2021-12-17 23:24:41,300 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2021-12-17 23:24:41,301 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2021-12-17 23:24:41,301 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) [2021-12-17 23:24:41,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:41,302 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] [2021-12-17 23:24:41,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:24:41,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2021-12-17 23:24:41,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200095325] [2021-12-17 23:24:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:41,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:24:41,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200095325] [2021-12-17 23:24:41,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200095325] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:24:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045875756] [2021-12-17 23:24:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:41,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:24:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:41,453 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) [2021-12-17 23:24:41,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 23:24:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 23:24:41,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:24:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 23:24:41,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:24:41,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045875756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:41,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:24:41,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-17 23:24:41,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928121047] [2021-12-17 23:24:41,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:41,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:24:41,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:41,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:24:41,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 23:24:41,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2021-12-17 23:24:41,777 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) [2021-12-17 23:24:41,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:41,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2021-12-17 23:24:41,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:41,819 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2021-12-17 23:24:41,819 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-12-17 23:24:41,820 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. [2021-12-17 23:24:41,821 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2021-12-17 23:24:41,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2021-12-17 23:24:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:24:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:24:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2021-12-17 23:24:41,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-12-17 23:24:41,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2021-12-17 23:24:41,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2021-12-17 23:24:41,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:41,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2021-12-17 23:24:41,825 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) [2021-12-17 23:24:41,826 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) [2021-12-17 23:24:41,826 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) [2021-12-17 23:24:41,826 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2021-12-17 23:24:41,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2021-12-17 23:24:41,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 23:24:41,830 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2021-12-17 23:24:41,830 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} [2021-12-17 23:24:41,831 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2021-12-17 23:24:41,831 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2021-12-17 23:24:41,831 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) [2021-12-17 23:24:41,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:41,832 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] [2021-12-17 23:24:41,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 23:24:42,054 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 [2021-12-17 23:24:42,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2021-12-17 23:24:42,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:42,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120573931] [2021-12-17 23:24:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:42,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 23:24:42,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120573931] [2021-12-17 23:24:42,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120573931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:24:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766008446] [2021-12-17 23:24:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:42,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:24:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:42,145 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) [2021-12-17 23:24:42,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 23:24:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:42,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:24:42,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:24:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 23:24:42,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:24:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 23:24:42,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766008446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:24:42,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:24:42,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-17 23:24:42,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628156742] [2021-12-17 23:24:42,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:24:42,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 23:24:42,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 23:24:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 23:24:42,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2021-12-17 23:24:42,628 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) [2021-12-17 23:24:42,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:42,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2021-12-17 23:24:42,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:42,730 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2021-12-17 23:24:42,731 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 23:24:42,732 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. [2021-12-17 23:24:42,733 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2021-12-17 23:24:42,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2021-12-17 23:24:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 23:24:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 23:24:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2021-12-17 23:24:42,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2021-12-17 23:24:42,737 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2021-12-17 23:24:42,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2021-12-17 23:24:42,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:42,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2021-12-17 23:24:42,741 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) [2021-12-17 23:24:42,744 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) [2021-12-17 23:24:42,745 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) [2021-12-17 23:24:42,745 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2021-12-17 23:24:42,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2021-12-17 23:24:42,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 23:24:42,748 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2021-12-17 23:24:42,748 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} [2021-12-17 23:24:42,749 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2021-12-17 23:24:42,749 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2021-12-17 23:24:42,750 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) [2021-12-17 23:24:42,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:42,750 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] [2021-12-17 23:24:42,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 23:24:42,963 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 [2021-12-17 23:24:42,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2021-12-17 23:24:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:42,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859663457] [2021-12-17 23:24:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:42,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 23:24:43,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:43,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859663457] [2021-12-17 23:24:43,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859663457] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:24:43,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354586868] [2021-12-17 23:24:43,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 23:24:43,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:24:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:43,045 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) [2021-12-17 23:24:43,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 23:24:43,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 23:24:43,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 23:24:43,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 23:24:43,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:24:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 23:24:43,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:24:43,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354586868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:43,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:24:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-17 23:24:43,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569127254] [2021-12-17 23:24:43,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 23:24:43,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 23:24:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 23:24:43,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2021-12-17 23:24:43,371 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) [2021-12-17 23:24:43,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:43,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2021-12-17 23:24:43,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:43,608 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2021-12-17 23:24:43,609 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-17 23:24:43,612 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. [2021-12-17 23:24:43,616 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2021-12-17 23:24:43,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2021-12-17 23:24:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 23:24:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 23:24:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2021-12-17 23:24:43,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2021-12-17 23:24:43,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2021-12-17 23:24:43,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2021-12-17 23:24:43,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:43,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2021-12-17 23:24:43,622 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) [2021-12-17 23:24:43,624 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) [2021-12-17 23:24:43,624 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) [2021-12-17 23:24:43,624 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2021-12-17 23:24:43,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2021-12-17 23:24:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-17 23:24:43,630 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2021-12-17 23:24:43,630 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} [2021-12-17 23:24:43,630 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2021-12-17 23:24:43,631 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2021-12-17 23:24:43,631 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) [2021-12-17 23:24:43,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:43,632 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] [2021-12-17 23:24:43,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 23:24:43,851 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 [2021-12-17 23:24:43,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1479845303, now seen corresponding path program 3 times [2021-12-17 23:24:43,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:43,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322884316] [2021-12-17 23:24:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:43,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 23:24:43,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322884316] [2021-12-17 23:24:43,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322884316] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:24:43,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277994487] [2021-12-17 23:24:43,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 23:24:43,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:24:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:43,902 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) [2021-12-17 23:24:43,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 23:24:44,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-17 23:24:44,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 23:24:44,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 23:24:44,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:24:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 23:24:44,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:24:44,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277994487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:44,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:24:44,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-12-17 23:24:44,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995337213] [2021-12-17 23:24:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:44,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 23:24:44,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 23:24:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 23:24:44,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2021-12-17 23:24:44,280 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) [2021-12-17 23:24:44,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:44,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2021-12-17 23:24:44,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:44,523 INFO L129 PetriNetUnfolder]: 325/1306 cut-off events. [2021-12-17 23:24:44,524 INFO L130 PetriNetUnfolder]: For 1252/1377 co-relation queries the response was YES. [2021-12-17 23:24:44,529 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. [2021-12-17 23:24:44,536 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 33 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2021-12-17 23:24:44,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 186 transitions, 809 flow [2021-12-17 23:24:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:24:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:24:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1179 transitions. [2021-12-17 23:24:44,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2021-12-17 23:24:44,539 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1179 transitions. [2021-12-17 23:24:44,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1179 transitions. [2021-12-17 23:24:44,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:44,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1179 transitions. [2021-12-17 23:24:44,543 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) [2021-12-17 23:24:44,545 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) [2021-12-17 23:24:44,546 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) [2021-12-17 23:24:44,546 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 10 states and 1179 transitions. [2021-12-17 23:24:44,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 186 transitions, 809 flow [2021-12-17 23:24:44,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 186 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:24:44,554 INFO L242 Difference]: Finished difference. Result has 159 places, 169 transitions, 765 flow [2021-12-17 23:24:44,555 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} [2021-12-17 23:24:44,555 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 39 predicate places. [2021-12-17 23:24:44,555 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 169 transitions, 765 flow [2021-12-17 23:24:44,556 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) [2021-12-17 23:24:44,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:44,556 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] [2021-12-17 23:24:44,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 23:24:44,779 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 [2021-12-17 23:24:44,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 186061792, now seen corresponding path program 4 times [2021-12-17 23:24:44,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:44,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980313532] [2021-12-17 23:24:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:44,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 23:24:44,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:44,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980313532] [2021-12-17 23:24:44,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980313532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:24:44,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:24:44,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:24:44,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083031658] [2021-12-17 23:24:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:24:44,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:24:44,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:24:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:24:44,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2021-12-17 23:24:44,844 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) [2021-12-17 23:24:44,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:44,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2021-12-17 23:24:44,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:44,940 INFO L129 PetriNetUnfolder]: 78/626 cut-off events. [2021-12-17 23:24:44,940 INFO L130 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2021-12-17 23:24:44,944 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. [2021-12-17 23:24:44,946 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2021-12-17 23:24:44,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 525 flow [2021-12-17 23:24:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:24:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 23:24:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-12-17 23:24:44,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2021-12-17 23:24:44,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-12-17 23:24:44,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-12-17 23:24:44,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:44,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-12-17 23:24:44,950 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) [2021-12-17 23:24:44,951 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) [2021-12-17 23:24:44,951 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) [2021-12-17 23:24:44,951 INFO L186 Difference]: Start difference. First operand has 159 places, 169 transitions, 765 flow. Second operand 3 states and 349 transitions. [2021-12-17 23:24:44,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 525 flow [2021-12-17 23:24:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 137 transitions, 463 flow, removed 12 selfloop flow, removed 12 redundant places. [2021-12-17 23:24:44,958 INFO L242 Difference]: Finished difference. Result has 146 places, 135 transitions, 425 flow [2021-12-17 23:24:44,958 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} [2021-12-17 23:24:44,959 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 26 predicate places. [2021-12-17 23:24:44,959 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 135 transitions, 425 flow [2021-12-17 23:24:44,959 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) [2021-12-17 23:24:44,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:44,960 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] [2021-12-17 23:24:44,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 23:24:44,960 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1561621710, now seen corresponding path program 5 times [2021-12-17 23:24:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513305655] [2021-12-17 23:24:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:44,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:24:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 23:24:45,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:24:45,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513305655] [2021-12-17 23:24:45,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513305655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:24:45,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785098019] [2021-12-17 23:24:45,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 23:24:45,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:24:45,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:24:45,044 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) [2021-12-17 23:24:45,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 23:24:45,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-17 23:24:45,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 23:24:45,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 23:24:45,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:24:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 23:24:45,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:24:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 23:24:45,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785098019] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:24:45,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:24:45,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-12-17 23:24:45,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958911630] [2021-12-17 23:24:45,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:24:45,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 23:24:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:24:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 23:24:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 23:24:45,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2021-12-17 23:24:45,638 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) [2021-12-17 23:24:45,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:24:45,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2021-12-17 23:24:45,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:24:45,777 INFO L129 PetriNetUnfolder]: 117/877 cut-off events. [2021-12-17 23:24:45,777 INFO L130 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2021-12-17 23:24:45,781 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. [2021-12-17 23:24:45,784 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 19 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2021-12-17 23:24:45,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 515 flow [2021-12-17 23:24:45,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 23:24:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 23:24:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2021-12-17 23:24:45,788 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2021-12-17 23:24:45,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2021-12-17 23:24:45,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2021-12-17 23:24:45,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:24:45,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2021-12-17 23:24:45,791 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) [2021-12-17 23:24:45,793 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) [2021-12-17 23:24:45,794 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) [2021-12-17 23:24:45,794 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 425 flow. Second operand 9 states and 1074 transitions. [2021-12-17 23:24:45,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 515 flow [2021-12-17 23:24:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 23:24:45,799 INFO L242 Difference]: Finished difference. Result has 156 places, 141 transitions, 467 flow [2021-12-17 23:24:45,799 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} [2021-12-17 23:24:45,800 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 36 predicate places. [2021-12-17 23:24:45,800 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 467 flow [2021-12-17 23:24:45,801 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) [2021-12-17 23:24:45,801 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:24:45,801 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] [2021-12-17 23:24:45,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 23:24:46,024 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 [2021-12-17 23:24:46,024 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:24:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:24:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash 459318713, now seen corresponding path program 6 times [2021-12-17 23:24:46,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:24:46,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493974540] [2021-12-17 23:24:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:24:46,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:24:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:24:46,086 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 23:24:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 23:24:46,173 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 23:24:46,173 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 23:24:46,174 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-17 23:24:46,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-17 23:24:46,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-17 23:24:46,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 23:24:46,179 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-12-17 23:24:46,183 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 23:24:46,184 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 23:24:46,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:24:46 BasicIcfg [2021-12-17 23:24:46,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 23:24:46,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 23:24:46,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 23:24:46,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 23:24:46,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:24:40" (3/4) ... [2021-12-17 23:24:46,298 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 23:24:46,365 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 23:24:46,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 23:24:46,366 INFO L158 Benchmark]: Toolchain (without parser) took 7141.76ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 70.6MB in the beginning and 58.8MB in the end (delta: 11.8MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,366 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:24:46,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.46ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 62.3MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 100.7MB. Free memory was 62.3MB in the beginning and 59.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,367 INFO L158 Benchmark]: Boogie Preprocessor took 29.99ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 58.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:24:46,367 INFO L158 Benchmark]: RCFGBuilder took 497.92ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 43.6MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,368 INFO L158 Benchmark]: TraceAbstraction took 5945.34ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 42.8MB in the beginning and 82.9MB in the end (delta: -40.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,368 INFO L158 Benchmark]: Witness Printer took 69.95ms. Allocated memory is still 146.8MB. Free memory was 82.9MB in the beginning and 58.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-17 23:24:46,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.46ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 62.3MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 100.7MB. Free memory was 62.3MB in the beginning and 59.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.99ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 58.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 497.92ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 43.6MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5945.34ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 42.8MB in the beginning and 82.9MB in the end (delta: -40.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 69.95ms. Allocated memory is still 146.8MB. Free memory was 82.9MB in the beginning and 58.8MB in the end (delta: 24.1MB). 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: 5.7s, 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, 0.2s 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, 0.5s SatisfiabilityAnalysisTime, 2.0s 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! [2021-12-17 23:24:46,403 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