./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.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-ext/46_monabsex2_vs.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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:15:42,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:15:42,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:15:42,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:15:42,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:15:42,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:15:42,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:15:42,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:15:42,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:15:42,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:15:42,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:15:42,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:15:42,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:15:42,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:15:42,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:15:42,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:15:42,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:15:42,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:15:42,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:15:42,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:15:42,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:15:42,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:15:42,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:15:42,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:15:42,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:15:42,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:15:42,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:15:42,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:15:42,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:15:42,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:15:42,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:15:42,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:15:42,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:15:42,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:15:42,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:15:42,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:15:42,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:15:42,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:15:42,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:15:42,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:15:42,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:15:42,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:15:42,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:15:42,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:15:42,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:15:42,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:15:42,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:15:42,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:15:42,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:15:42,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:15:42,946 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:15:42,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:15:42,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:15:42,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:15:42,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:15:42,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:15:42,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:15:42,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:15:42,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:15:42,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:15:42,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:15:42,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:15:42,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:15:42,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:15:42,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:15:42,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:15:42,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:15:42,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:15:42,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:15:42,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:15:42,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2021-12-17 22:15:43,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:15:43,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:15:43,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:15:43,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:15:43,178 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:15:43,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2021-12-17 22:15:43,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973bdf0c0/c7ef723b128047d89b4ea727c81d8d68/FLAGfa72902d6 [2021-12-17 22:15:43,678 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:15:43,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2021-12-17 22:15:43,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973bdf0c0/c7ef723b128047d89b4ea727c81d8d68/FLAGfa72902d6 [2021-12-17 22:15:44,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973bdf0c0/c7ef723b128047d89b4ea727c81d8d68 [2021-12-17 22:15:44,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:15:44,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:15:44,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:15:44,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:15:44,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:15:44,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160c655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44, skipping insertion in model container [2021-12-17 22:15:44,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:15:44,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:15:44,210 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:15:44,287 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-ext/46_monabsex2_vs.i[30494,30507] [2021-12-17 22:15:44,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:15:44,300 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:15:44,327 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:15:44,350 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-ext/46_monabsex2_vs.i[30494,30507] [2021-12-17 22:15:44,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:15:44,390 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:15:44,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44 WrapperNode [2021-12-17 22:15:44,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:15:44,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:15:44,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:15:44,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:15:44,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,441 INFO L137 Inliner]: procedures = 170, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-17 22:15:44,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:15:44,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:15:44,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:15:44,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:15:44,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:15:44,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:15:44,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:15:44,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:15:44,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (1/1) ... [2021-12-17 22:15:44,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:15:44,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:15:44,512 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 22:15:44,532 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 22:15:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-12-17 22:15:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-12-17 22:15:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:15:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:15:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:15:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:15:44,593 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 22:15:44,695 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:15:44,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:15:44,843 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:15:44,857 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:15:44,857 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 22:15:44,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:15:44 BoogieIcfgContainer [2021-12-17 22:15:44,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:15:44,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:15:44,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:15:44,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:15:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:15:44" (1/3) ... [2021-12-17 22:15:44,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6277d5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:15:44, skipping insertion in model container [2021-12-17 22:15:44,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:15:44" (2/3) ... [2021-12-17 22:15:44,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6277d5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:15:44, skipping insertion in model container [2021-12-17 22:15:44,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:15:44" (3/3) ... [2021-12-17 22:15:44,867 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2021-12-17 22:15:44,871 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:15:44,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:15:44,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:15:44,872 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:15:44,888 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,888 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,889 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,890 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,890 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,890 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,891 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,893 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,894 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,894 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,894 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:44,895 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:44,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:44,953 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 22:15:44,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:15:44,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2021-12-17 22:15:45,004 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2021-12-17 22:15:45,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:45,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 48 events. 2/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2021-12-17 22:15:45,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 79 flow [2021-12-17 22:15:45,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 37 transitions, 79 flow [2021-12-17 22:15:45,022 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-17 22:15:45,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:45,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,023 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] [2021-12-17 22:15:45,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:15:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1096869042, now seen corresponding path program 1 times [2021-12-17 22:15:45,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019441778] [2021-12-17 22:15:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:45,241 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 22:15:45,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:45,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019441778] [2021-12-17 22:15:45,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019441778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:45,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:45,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:45,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217837350] [2021-12-17 22:15:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:45,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:45,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:45,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 37 [2021-12-17 22:15:45,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 22:15:45,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:45,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 37 [2021-12-17 22:15:45,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:45,301 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-12-17 22:15:45,301 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:15:45,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-12-17 22:15:45,303 INFO L132 encePairwiseOnDemand]: 32/37 looper letters, 2 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2021-12-17 22:15:45,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 71 flow [2021-12-17 22:15:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2021-12-17 22:15:45,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2021-12-17 22:15:45,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2021-12-17 22:15:45,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2021-12-17 22:15:45,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:45,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2021-12-17 22:15:45,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 22:15:45,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 22:15:45,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 22:15:45,325 INFO L186 Difference]: Start difference. First operand has 39 places, 37 transitions, 79 flow. Second operand 3 states and 99 transitions. [2021-12-17 22:15:45,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 71 flow [2021-12-17 22:15:45,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 71 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:45,332 INFO L242 Difference]: Finished difference. Result has 34 places, 29 transitions, 67 flow [2021-12-17 22:15:45,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-12-17 22:15:45,337 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2021-12-17 22:15:45,337 INFO L470 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 67 flow [2021-12-17 22:15:45,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 22:15:45,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,338 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:15:45,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:15:45,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:15:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash 750747050, now seen corresponding path program 1 times [2021-12-17 22:15:45,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103416399] [2021-12-17 22:15:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,407 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:45,407 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:45,408 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-12-17 22:15:45,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-17 22:15:45,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-17 22:15:45,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:15:45,416 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 22:15:45,417 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:45,417 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,427 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,428 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,429 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,430 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:45,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:45,432 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 22:15:45,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 22:15:45,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 102 flow [2021-12-17 22:15:45,455 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2021-12-17 22:15:45,471 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:15:45,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2021-12-17 22:15:45,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 102 flow [2021-12-17 22:15:45,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 102 flow [2021-12-17 22:15:45,476 INFO L129 PetriNetUnfolder]: 2/32 cut-off events. [2021-12-17 22:15:45,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:45,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,476 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] [2021-12-17 22:15:45,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:15:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash 816539065, now seen corresponding path program 1 times [2021-12-17 22:15:45,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559670158] [2021-12-17 22:15:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:45,517 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 22:15:45,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:45,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559670158] [2021-12-17 22:15:45,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559670158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:45,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:45,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:45,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164245902] [2021-12-17 22:15:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:45,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:45,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:45,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 45 [2021-12-17 22:15:45,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 22:15:45,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:45,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 45 [2021-12-17 22:15:45,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:45,553 INFO L129 PetriNetUnfolder]: 6/75 cut-off events. [2021-12-17 22:15:45,554 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-17 22:15:45,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 75 events. 6/75 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 2 based on Foata normal form. 15/87 useless extension candidates. Maximal degree in co-relation 37. Up to 13 conditions per place. [2021-12-17 22:15:45,554 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 11 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2021-12-17 22:15:45,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 131 flow [2021-12-17 22:15:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-12-17 22:15:45,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9037037037037037 [2021-12-17 22:15:45,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-12-17 22:15:45,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-12-17 22:15:45,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:45,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-12-17 22:15:45,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 22:15:45,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:15:45,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:15:45,564 INFO L186 Difference]: Start difference. First operand has 49 places, 45 transitions, 102 flow. Second operand 3 states and 122 transitions. [2021-12-17 22:15:45,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 131 flow [2021-12-17 22:15:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 129 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:45,566 INFO L242 Difference]: Finished difference. Result has 46 places, 40 transitions, 107 flow [2021-12-17 22:15:45,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2021-12-17 22:15:45,566 INFO L334 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-12-17 22:15:45,566 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 107 flow [2021-12-17 22:15:45,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 22:15:45,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,567 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:15:45,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:15:45,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:15:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash -217358121, now seen corresponding path program 1 times [2021-12-17 22:15:45,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301494885] [2021-12-17 22:15:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:15:45,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301494885] [2021-12-17 22:15:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301494885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:45,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:45,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778199539] [2021-12-17 22:15:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:45,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:45,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:45,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 45 [2021-12-17 22:15:45,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 22:15:45,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:45,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 45 [2021-12-17 22:15:45,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:45,636 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-12-17 22:15:45,636 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-12-17 22:15:45,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 74 events. 7/74 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 2 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 72. Up to 10 conditions per place. [2021-12-17 22:15:45,637 INFO L132 encePairwiseOnDemand]: 41/45 looper letters, 10 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2021-12-17 22:15:45,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 138 flow [2021-12-17 22:15:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-12-17 22:15:45,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-12-17 22:15:45,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-12-17 22:15:45,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-12-17 22:15:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:45,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-12-17 22:15:45,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 22:15:45,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:15:45,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 22:15:45,641 INFO L186 Difference]: Start difference. First operand has 46 places, 40 transitions, 107 flow. Second operand 3 states and 116 transitions. [2021-12-17 22:15:45,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 138 flow [2021-12-17 22:15:45,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:15:45,643 INFO L242 Difference]: Finished difference. Result has 46 places, 40 transitions, 110 flow [2021-12-17 22:15:45,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2021-12-17 22:15:45,644 INFO L334 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2021-12-17 22:15:45,644 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 110 flow [2021-12-17 22:15:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 22:15:45,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,645 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:15:45,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:15:45,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:15:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1984575946, now seen corresponding path program 1 times [2021-12-17 22:15:45,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467660288] [2021-12-17 22:15:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:45,671 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:45,672 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-12-17 22:15:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-12-17 22:15:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-12-17 22:15:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-12-17 22:15:45,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:15:45,673 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:15:45,673 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:45,673 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-12-17 22:15:45,679 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,679 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,679 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,680 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,680 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,680 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,680 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,680 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,681 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,682 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,685 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,685 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,685 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,685 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,686 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,686 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,686 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,686 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,687 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,687 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,687 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:45,687 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:45,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:45,689 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 22:15:45,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 22:15:45,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 53 transitions, 127 flow [2021-12-17 22:15:45,697 INFO L129 PetriNetUnfolder]: 4/90 cut-off events. [2021-12-17 22:15:45,697 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-17 22:15:45,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 90 events. 4/90 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 8 conditions per place. [2021-12-17 22:15:45,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 53 transitions, 127 flow [2021-12-17 22:15:45,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 53 transitions, 127 flow [2021-12-17 22:15:45,701 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-17 22:15:45,701 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:45,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,701 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] [2021-12-17 22:15:45,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 22:15:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1995165472, now seen corresponding path program 1 times [2021-12-17 22:15:45,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062906861] [2021-12-17 22:15:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:45,739 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 22:15:45,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062906861] [2021-12-17 22:15:45,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062906861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:45,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:45,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:45,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996955658] [2021-12-17 22:15:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:45,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:45,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 53 [2021-12-17 22:15:45,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 22:15:45,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:45,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 53 [2021-12-17 22:15:45,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:45,833 INFO L129 PetriNetUnfolder]: 59/242 cut-off events. [2021-12-17 22:15:45,833 INFO L130 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2021-12-17 22:15:45,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 242 events. 59/242 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1125 event pairs, 23 based on Foata normal form. 60/274 useless extension candidates. Maximal degree in co-relation 108. Up to 95 conditions per place. [2021-12-17 22:15:45,836 INFO L132 encePairwiseOnDemand]: 44/53 looper letters, 17 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2021-12-17 22:15:45,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 183 flow [2021-12-17 22:15:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2021-12-17 22:15:45,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8930817610062893 [2021-12-17 22:15:45,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2021-12-17 22:15:45,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2021-12-17 22:15:45,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:45,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2021-12-17 22:15:45,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 22:15:45,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:15:45,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:15:45,839 INFO L186 Difference]: Start difference. First operand has 59 places, 53 transitions, 127 flow. Second operand 3 states and 142 transitions. [2021-12-17 22:15:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 183 flow [2021-12-17 22:15:45,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 175 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:45,841 INFO L242 Difference]: Finished difference. Result has 56 places, 49 transitions, 137 flow [2021-12-17 22:15:45,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2021-12-17 22:15:45,841 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2021-12-17 22:15:45,842 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 137 flow [2021-12-17 22:15:45,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 22:15:45,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,842 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:15:45,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:15:45,842 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 22:15:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1152270226, now seen corresponding path program 1 times [2021-12-17 22:15:45,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089136712] [2021-12-17 22:15:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 22:15:45,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:45,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089136712] [2021-12-17 22:15:45,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089136712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:45,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:45,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:45,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897398746] [2021-12-17 22:15:45,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:45,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:45,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:45,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:45,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:45,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 53 [2021-12-17 22:15:45,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 22:15:45,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:45,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 53 [2021-12-17 22:15:45,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:45,928 INFO L129 PetriNetUnfolder]: 53/239 cut-off events. [2021-12-17 22:15:45,928 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2021-12-17 22:15:45,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 239 events. 53/239 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1053 event pairs, 17 based on Foata normal form. 23/254 useless extension candidates. Maximal degree in co-relation 266. Up to 57 conditions per place. [2021-12-17 22:15:45,932 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 15 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2021-12-17 22:15:45,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 187 flow [2021-12-17 22:15:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-12-17 22:15:45,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490566037735849 [2021-12-17 22:15:45,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-12-17 22:15:45,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-12-17 22:15:45,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:45,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-12-17 22:15:45,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 22:15:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:15:45,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 22:15:45,939 INFO L186 Difference]: Start difference. First operand has 56 places, 49 transitions, 137 flow. Second operand 3 states and 135 transitions. [2021-12-17 22:15:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 187 flow [2021-12-17 22:15:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:15:45,943 INFO L242 Difference]: Finished difference. Result has 55 places, 49 transitions, 142 flow [2021-12-17 22:15:45,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2021-12-17 22:15:45,945 INFO L334 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2021-12-17 22:15:45,945 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 142 flow [2021-12-17 22:15:45,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 22:15:45,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:45,945 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:15:45,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:15:45,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 22:15:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 620408523, now seen corresponding path program 1 times [2021-12-17 22:15:45,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:45,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528029677] [2021-12-17 22:15:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:45,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,970 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:45,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:45,988 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:45,989 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2021-12-17 22:15:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-17 22:15:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-12-17 22:15:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-12-17 22:15:45,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-17 22:15:45,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:15:45,989 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:15:45,990 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:45,990 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-12-17 22:15:46,001 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,006 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,007 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,008 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,009 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,010 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,011 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,011 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:46,012 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:46,012 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 22:15:46,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 22:15:46,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 61 transitions, 154 flow [2021-12-17 22:15:46,018 INFO L129 PetriNetUnfolder]: 5/111 cut-off events. [2021-12-17 22:15:46,019 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-17 22:15:46,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 111 events. 5/111 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 98. Up to 10 conditions per place. [2021-12-17 22:15:46,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 61 transitions, 154 flow [2021-12-17 22:15:46,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 61 transitions, 154 flow [2021-12-17 22:15:46,021 INFO L129 PetriNetUnfolder]: 1/30 cut-off events. [2021-12-17 22:15:46,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:46,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:46,021 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] [2021-12-17 22:15:46,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 22:15:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1251690471, now seen corresponding path program 1 times [2021-12-17 22:15:46,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:46,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312854531] [2021-12-17 22:15:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:46,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:46,039 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 22:15:46,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:46,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312854531] [2021-12-17 22:15:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312854531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:46,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:46,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:46,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487250147] [2021-12-17 22:15:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:46,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:46,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:46,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 61 [2021-12-17 22:15:46,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 22:15:46,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:46,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 61 [2021-12-17 22:15:46,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:46,183 INFO L129 PetriNetUnfolder]: 421/1000 cut-off events. [2021-12-17 22:15:46,183 INFO L130 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2021-12-17 22:15:46,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1000 events. 421/1000 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6350 event pairs, 231 based on Foata normal form. 243/1040 useless extension candidates. Maximal degree in co-relation 596. Up to 608 conditions per place. [2021-12-17 22:15:46,193 INFO L132 encePairwiseOnDemand]: 50/61 looper letters, 23 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2021-12-17 22:15:46,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 239 flow [2021-12-17 22:15:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2021-12-17 22:15:46,195 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8852459016393442 [2021-12-17 22:15:46,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2021-12-17 22:15:46,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2021-12-17 22:15:46,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:46,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2021-12-17 22:15:46,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 22:15:46,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 22:15:46,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 22:15:46,198 INFO L186 Difference]: Start difference. First operand has 69 places, 61 transitions, 154 flow. Second operand 3 states and 162 transitions. [2021-12-17 22:15:46,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 239 flow [2021-12-17 22:15:46,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 221 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:46,202 INFO L242 Difference]: Finished difference. Result has 66 places, 58 transitions, 167 flow [2021-12-17 22:15:46,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2021-12-17 22:15:46,203 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2021-12-17 22:15:46,204 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 167 flow [2021-12-17 22:15:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 22:15:46,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:46,204 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:15:46,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:15:46,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 22:15:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1254058345, now seen corresponding path program 1 times [2021-12-17 22:15:46,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977796525] [2021-12-17 22:15:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:46,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:15:46,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:46,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977796525] [2021-12-17 22:15:46,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977796525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:46,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:46,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:46,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058568245] [2021-12-17 22:15:46,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:46,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:46,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:46,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 61 [2021-12-17 22:15:46,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:15:46,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:46,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 61 [2021-12-17 22:15:46,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:46,348 INFO L129 PetriNetUnfolder]: 283/916 cut-off events. [2021-12-17 22:15:46,349 INFO L130 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2021-12-17 22:15:46,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 916 events. 283/916 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6391 event pairs, 59 based on Foata normal form. 163/1046 useless extension candidates. Maximal degree in co-relation 1631. Up to 260 conditions per place. [2021-12-17 22:15:46,355 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 20 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2021-12-17 22:15:46,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 236 flow [2021-12-17 22:15:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2021-12-17 22:15:46,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2021-12-17 22:15:46,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2021-12-17 22:15:46,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2021-12-17 22:15:46,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:46,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2021-12-17 22:15:46,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 22:15:46,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 22:15:46,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 22:15:46,358 INFO L186 Difference]: Start difference. First operand has 66 places, 58 transitions, 167 flow. Second operand 3 states and 154 transitions. [2021-12-17 22:15:46,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 236 flow [2021-12-17 22:15:46,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:15:46,361 INFO L242 Difference]: Finished difference. Result has 64 places, 58 transitions, 174 flow [2021-12-17 22:15:46,361 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2021-12-17 22:15:46,361 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2021-12-17 22:15:46,361 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 174 flow [2021-12-17 22:15:46,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:15:46,362 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:46,362 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:15:46,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:15:46,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-17 22:15:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 744623267, now seen corresponding path program 1 times [2021-12-17 22:15:46,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:46,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420314228] [2021-12-17 22:15:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:46,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:46,378 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:46,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:46,396 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:46,396 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-12-17 22:15:46,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-17 22:15:46,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-12-17 22:15:46,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-17 22:15:46,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-17 22:15:46,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-17 22:15:46,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:15:46,397 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:15:46,397 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:46,397 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-12-17 22:15:46,404 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,405 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,406 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,406 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,406 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,406 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,406 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,407 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,408 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,409 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,410 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,411 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,412 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,413 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,413 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,413 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,413 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,413 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,414 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,415 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,415 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,415 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,415 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,416 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,416 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,416 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,416 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,417 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,417 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,417 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,417 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,418 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,418 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,418 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,418 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:46,419 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:46,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:46,425 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 22:15:46,425 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-17 22:15:46,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 69 transitions, 183 flow [2021-12-17 22:15:46,435 INFO L129 PetriNetUnfolder]: 6/132 cut-off events. [2021-12-17 22:15:46,436 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-12-17 22:15:46,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 6/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 198 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 124. Up to 12 conditions per place. [2021-12-17 22:15:46,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 69 transitions, 183 flow [2021-12-17 22:15:46,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 69 transitions, 183 flow [2021-12-17 22:15:46,439 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-17 22:15:46,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:46,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:46,440 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] [2021-12-17 22:15:46,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:15:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1967171630, now seen corresponding path program 1 times [2021-12-17 22:15:46,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35374780] [2021-12-17 22:15:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:46,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:46,473 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 22:15:46,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:46,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35374780] [2021-12-17 22:15:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35374780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:46,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:46,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929179758] [2021-12-17 22:15:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:46,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:46,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:46,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 69 [2021-12-17 22:15:46,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 22:15:46,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:46,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 69 [2021-12-17 22:15:46,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:46,887 INFO L129 PetriNetUnfolder]: 2584/4717 cut-off events. [2021-12-17 22:15:46,888 INFO L130 PetriNetUnfolder]: For 3401/3401 co-relation queries the response was YES. [2021-12-17 22:15:46,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 4717 events. 2584/4717 cut-off events. For 3401/3401 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33183 event pairs, 864 based on Foata normal form. 1064/4709 useless extension candidates. Maximal degree in co-relation 6342. Up to 3488 conditions per place. [2021-12-17 22:15:46,940 INFO L132 encePairwiseOnDemand]: 56/69 looper letters, 29 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2021-12-17 22:15:46,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 299 flow [2021-12-17 22:15:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2021-12-17 22:15:46,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2021-12-17 22:15:46,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2021-12-17 22:15:46,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2021-12-17 22:15:46,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:46,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2021-12-17 22:15:46,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 22:15:46,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 22:15:46,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 22:15:46,942 INFO L186 Difference]: Start difference. First operand has 79 places, 69 transitions, 183 flow. Second operand 3 states and 182 transitions. [2021-12-17 22:15:46,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 299 flow [2021-12-17 22:15:46,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 267 flow, removed 16 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:46,946 INFO L242 Difference]: Finished difference. Result has 76 places, 67 transitions, 197 flow [2021-12-17 22:15:46,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2021-12-17 22:15:46,947 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2021-12-17 22:15:46,947 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 197 flow [2021-12-17 22:15:46,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 22:15:46,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:46,947 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:15:46,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:15:46,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:15:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1941602668, now seen corresponding path program 1 times [2021-12-17 22:15:46,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:46,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695531766] [2021-12-17 22:15:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:46,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 22:15:46,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:46,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695531766] [2021-12-17 22:15:46,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695531766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:46,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:46,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:46,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795539141] [2021-12-17 22:15:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:46,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:46,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:46,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 69 [2021-12-17 22:15:46,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 22:15:46,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:46,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 69 [2021-12-17 22:15:46,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:47,284 INFO L129 PetriNetUnfolder]: 1323/3694 cut-off events. [2021-12-17 22:15:47,284 INFO L130 PetriNetUnfolder]: For 1408/1408 co-relation queries the response was YES. [2021-12-17 22:15:47,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 3694 events. 1323/3694 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33703 event pairs, 293 based on Foata normal form. 928/4487 useless extension candidates. Maximal degree in co-relation 6642. Up to 1123 conditions per place. [2021-12-17 22:15:47,314 INFO L132 encePairwiseOnDemand]: 59/69 looper letters, 25 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2021-12-17 22:15:47,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 285 flow [2021-12-17 22:15:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2021-12-17 22:15:47,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8357487922705314 [2021-12-17 22:15:47,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2021-12-17 22:15:47,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2021-12-17 22:15:47,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:47,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2021-12-17 22:15:47,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 22:15:47,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 22:15:47,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 22:15:47,316 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 197 flow. Second operand 3 states and 173 transitions. [2021-12-17 22:15:47,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 285 flow [2021-12-17 22:15:47,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:15:47,319 INFO L242 Difference]: Finished difference. Result has 73 places, 67 transitions, 206 flow [2021-12-17 22:15:47,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2021-12-17 22:15:47,320 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2021-12-17 22:15:47,320 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 206 flow [2021-12-17 22:15:47,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 22:15:47,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:47,320 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:15:47,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 22:15:47,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 22:15:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash -576744180, now seen corresponding path program 1 times [2021-12-17 22:15:47,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:47,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244570684] [2021-12-17 22:15:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:47,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:47,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:47,363 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:47,363 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-12-17 22:15:47,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-12-17 22:15:47,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 22:15:47,365 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:15:47,365 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:47,365 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,382 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,383 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,384 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,387 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,388 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,392 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:47,395 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:47,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:47,396 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 22:15:47,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-17 22:15:47,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 77 transitions, 214 flow [2021-12-17 22:15:47,407 INFO L129 PetriNetUnfolder]: 7/153 cut-off events. [2021-12-17 22:15:47,407 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-12-17 22:15:47,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 153 events. 7/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 229 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-12-17 22:15:47,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 77 transitions, 214 flow [2021-12-17 22:15:47,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 77 transitions, 214 flow [2021-12-17 22:15:47,411 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2021-12-17 22:15:47,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:47,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:47,411 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] [2021-12-17 22:15:47,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 22:15:47,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 151278677, now seen corresponding path program 1 times [2021-12-17 22:15:47,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:47,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718723846] [2021-12-17 22:15:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:47,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:47,432 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 22:15:47,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718723846] [2021-12-17 22:15:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718723846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:47,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:47,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158741986] [2021-12-17 22:15:47,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:47,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:47,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 77 [2021-12-17 22:15:47,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 22:15:47,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:47,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 77 [2021-12-17 22:15:47,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:49,677 INFO L129 PetriNetUnfolder]: 14408/23143 cut-off events. [2021-12-17 22:15:49,677 INFO L130 PetriNetUnfolder]: For 21004/21004 co-relation queries the response was YES. [2021-12-17 22:15:49,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49387 conditions, 23143 events. 14408/23143 cut-off events. For 21004/21004 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 183564 event pairs, 9424 based on Foata normal form. 4495/21566 useless extension candidates. Maximal degree in co-relation 13922. Up to 18519 conditions per place. [2021-12-17 22:15:49,953 INFO L132 encePairwiseOnDemand]: 62/77 looper letters, 35 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2021-12-17 22:15:49,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 363 flow [2021-12-17 22:15:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2021-12-17 22:15:49,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8744588744588745 [2021-12-17 22:15:49,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2021-12-17 22:15:49,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2021-12-17 22:15:49,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:49,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2021-12-17 22:15:49,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 22:15:49,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 22:15:49,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 22:15:49,957 INFO L186 Difference]: Start difference. First operand has 89 places, 77 transitions, 214 flow. Second operand 3 states and 202 transitions. [2021-12-17 22:15:49,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 363 flow [2021-12-17 22:15:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 313 flow, removed 25 selfloop flow, removed 0 redundant places. [2021-12-17 22:15:49,962 INFO L242 Difference]: Finished difference. Result has 86 places, 76 transitions, 227 flow [2021-12-17 22:15:49,963 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2021-12-17 22:15:49,964 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2021-12-17 22:15:49,964 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 227 flow [2021-12-17 22:15:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 22:15:49,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:49,964 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:15:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 22:15:49,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 22:15:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406981, now seen corresponding path program 1 times [2021-12-17 22:15:49,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:49,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871739295] [2021-12-17 22:15:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:49,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:15:49,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871739295] [2021-12-17 22:15:49,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871739295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:49,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:49,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:49,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976633816] [2021-12-17 22:15:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:49,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:49,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:49,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 77 [2021-12-17 22:15:49,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 22:15:49,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:49,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 77 [2021-12-17 22:15:49,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:51,045 INFO L129 PetriNetUnfolder]: 5635/13690 cut-off events. [2021-12-17 22:15:51,046 INFO L130 PetriNetUnfolder]: For 6823/6852 co-relation queries the response was YES. [2021-12-17 22:15:51,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24317 conditions, 13690 events. 5635/13690 cut-off events. For 6823/6852 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 144189 event pairs, 2538 based on Foata normal form. 4368/17135 useless extension candidates. Maximal degree in co-relation 13752. Up to 4511 conditions per place. [2021-12-17 22:15:51,169 INFO L132 encePairwiseOnDemand]: 65/77 looper letters, 30 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2021-12-17 22:15:51,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 334 flow [2021-12-17 22:15:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:15:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:15:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-12-17 22:15:51,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311688311688312 [2021-12-17 22:15:51,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-12-17 22:15:51,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-12-17 22:15:51,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:15:51,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-12-17 22:15:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 22:15:51,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 22:15:51,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 22:15:51,172 INFO L186 Difference]: Start difference. First operand has 86 places, 76 transitions, 227 flow. Second operand 3 states and 192 transitions. [2021-12-17 22:15:51,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 334 flow [2021-12-17 22:15:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:15:51,174 INFO L242 Difference]: Finished difference. Result has 82 places, 76 transitions, 238 flow [2021-12-17 22:15:51,174 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2021-12-17 22:15:51,175 INFO L334 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2021-12-17 22:15:51,175 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 238 flow [2021-12-17 22:15:51,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 22:15:51,175 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:51,175 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 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 22:15:51,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 22:15:51,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 22:15:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 907606544, now seen corresponding path program 1 times [2021-12-17 22:15:51,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:51,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148577332] [2021-12-17 22:15:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:51,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:51,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:15:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:15:51,194 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:15:51,194 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:15:51,194 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (7 of 8 remaining) [2021-12-17 22:15:51,194 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2021-12-17 22:15:51,194 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2021-12-17 22:15:51,194 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2021-12-17 22:15:51,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2021-12-17 22:15:51,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2021-12-17 22:15:51,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2021-12-17 22:15:51,195 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2021-12-17 22:15:51,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 22:15:51,195 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:15:51,195 WARN L234 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:15:51,195 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-12-17 22:15:51,203 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,203 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,203 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,205 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,206 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,208 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,210 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,210 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:15:51,210 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:15:51,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:15:51,211 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 22:15:51,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-17 22:15:51,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 85 transitions, 247 flow [2021-12-17 22:15:51,219 INFO L129 PetriNetUnfolder]: 8/174 cut-off events. [2021-12-17 22:15:51,219 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-12-17 22:15:51,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 174 events. 8/174 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 270 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 180. Up to 16 conditions per place. [2021-12-17 22:15:51,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 85 transitions, 247 flow [2021-12-17 22:15:51,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 85 transitions, 247 flow [2021-12-17 22:15:51,221 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-17 22:15:51,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:15:51,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:15:51,222 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] [2021-12-17 22:15:51,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-17 22:15:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:15:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash 98979356, now seen corresponding path program 1 times [2021-12-17 22:15:51,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:15:51,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353642822] [2021-12-17 22:15:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:15:51,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:15:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:15:51,237 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 22:15:51,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:15:51,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353642822] [2021-12-17 22:15:51,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353642822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:15:51,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:15:51,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:15:51,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901871773] [2021-12-17 22:15:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:15:51,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:15:51,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:15:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:15:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:15:51,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 85 [2021-12-17 22:15:51,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 22:15:51,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:15:51,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 85 [2021-12-17 22:15:51,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:15:59,371 INFO L129 PetriNetUnfolder]: 75117/111330 cut-off events. [2021-12-17 22:15:59,372 INFO L130 PetriNetUnfolder]: For 116553/116553 co-relation queries the response was YES. [2021-12-17 22:16:00,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239848 conditions, 111330 events. 75117/111330 cut-off events. For 116553/116553 co-relation queries the response was YES. Maximal size of possible extension queue 5092. Compared 897039 event pairs, 29991 based on Foata normal form. 18820/100778 useless extension candidates. Maximal degree in co-relation 156380. Up to 93041 conditions per place. [2021-12-17 22:16:01,059 INFO L132 encePairwiseOnDemand]: 68/85 looper letters, 41 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2021-12-17 22:16:01,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 431 flow [2021-12-17 22:16:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:16:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:16:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-12-17 22:16:01,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8705882352941177 [2021-12-17 22:16:01,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-12-17 22:16:01,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-12-17 22:16:01,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:16:01,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-12-17 22:16:01,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 22:16:01,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:16:01,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:16:01,062 INFO L186 Difference]: Start difference. First operand has 99 places, 85 transitions, 247 flow. Second operand 3 states and 222 transitions. [2021-12-17 22:16:01,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 431 flow [2021-12-17 22:16:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 359 flow, removed 36 selfloop flow, removed 0 redundant places. [2021-12-17 22:16:01,094 INFO L242 Difference]: Finished difference. Result has 96 places, 85 transitions, 257 flow [2021-12-17 22:16:01,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2021-12-17 22:16:01,095 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2021-12-17 22:16:01,095 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 257 flow [2021-12-17 22:16:01,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 22:16:01,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:16:01,095 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-17 22:16:01,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 22:16:01,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-17 22:16:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:16:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 314136048, now seen corresponding path program 1 times [2021-12-17 22:16:01,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:16:01,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672537604] [2021-12-17 22:16:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:16:01,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:16:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:16:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 22:16:01,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:16:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672537604] [2021-12-17 22:16:01,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672537604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:16:01,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:16:01,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:16:01,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745184873] [2021-12-17 22:16:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:16:01,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:16:01,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:16:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:16:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:16:01,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 85 [2021-12-17 22:16:01,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 22:16:01,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:16:01,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 85 [2021-12-17 22:16:01,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:16:05,702 INFO L129 PetriNetUnfolder]: 24837/60570 cut-off events. [2021-12-17 22:16:05,702 INFO L130 PetriNetUnfolder]: For 32579/32579 co-relation queries the response was YES. [2021-12-17 22:16:06,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105798 conditions, 60570 events. 24837/60570 cut-off events. For 32579/32579 co-relation queries the response was YES. Maximal size of possible extension queue 3523. Compared 789849 event pairs, 7506 based on Foata normal form. 22113/79785 useless extension candidates. Maximal degree in co-relation 105732. Up to 23603 conditions per place. [2021-12-17 22:16:06,488 INFO L132 encePairwiseOnDemand]: 71/85 looper letters, 35 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2021-12-17 22:16:06,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 383 flow [2021-12-17 22:16:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:16:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:16:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2021-12-17 22:16:06,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8274509803921568 [2021-12-17 22:16:06,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2021-12-17 22:16:06,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2021-12-17 22:16:06,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:16:06,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2021-12-17 22:16:06,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 22:16:06,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:16:06,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 22:16:06,492 INFO L186 Difference]: Start difference. First operand has 96 places, 85 transitions, 257 flow. Second operand 3 states and 211 transitions. [2021-12-17 22:16:06,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 383 flow [2021-12-17 22:16:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:16:06,501 INFO L242 Difference]: Finished difference. Result has 91 places, 85 transitions, 270 flow [2021-12-17 22:16:06,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2021-12-17 22:16:06,501 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2021-12-17 22:16:06,502 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 270 flow [2021-12-17 22:16:06,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 22:16:06,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:16:06,502 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 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 22:16:06,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 22:16:06,502 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-17 22:16:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:16:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash -82625427, now seen corresponding path program 1 times [2021-12-17 22:16:06,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:16:06,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429160034] [2021-12-17 22:16:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:16:06,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:16:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:16:06,513 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 22:16:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 22:16:06,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 22:16:06,525 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 22:16:06,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2021-12-17 22:16:06,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2021-12-17 22:16:06,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2021-12-17 22:16:06,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2021-12-17 22:16:06,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 22:16:06,527 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:16:06,527 WARN L234 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-12-17 22:16:06,528 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-12-17 22:16:06,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,552 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,552 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,552 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,553 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,554 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,554 WARN L322 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,555 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,556 WARN L322 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:16:06,556 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:16:06,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:16:06,557 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 22:16:06,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-17 22:16:06,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 93 transitions, 282 flow [2021-12-17 22:16:06,569 INFO L129 PetriNetUnfolder]: 9/195 cut-off events. [2021-12-17 22:16:06,570 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-12-17 22:16:06,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 9/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 318 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 211. Up to 18 conditions per place. [2021-12-17 22:16:06,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 93 transitions, 282 flow [2021-12-17 22:16:06,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 93 transitions, 282 flow [2021-12-17 22:16:06,573 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-12-17 22:16:06,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:16:06,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:16:06,573 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] [2021-12-17 22:16:06,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-17 22:16:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:16:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1810271875, now seen corresponding path program 1 times [2021-12-17 22:16:06,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:16:06,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393128198] [2021-12-17 22:16:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:16:06,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:16:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:16:06,590 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 22:16:06,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:16:06,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393128198] [2021-12-17 22:16:06,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393128198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:16:06,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:16:06,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 22:16:06,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068308415] [2021-12-17 22:16:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:16:06,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:16:06,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:16:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:16:06,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:16:06,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 93 [2021-12-17 22:16:06,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 22:16:06,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:16:06,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 93 [2021-12-17 22:16:06,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand