./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/weaver/chl-collitem-subst.wvr.c -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 e2cb2ea6991951b6a9c5c1df0de2ac5ff84f75971959d591fa5f258025f94929 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:58:05,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:58:05,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:58:05,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:58:05,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:58:05,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:58:05,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:58:05,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:58:05,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:58:05,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:58:05,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:58:05,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:58:05,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:58:05,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:58:05,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:58:05,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:58:05,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:58:05,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:58:05,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:58:05,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:58:05,553 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:58:05,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:58:05,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:58:05,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:58:05,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:58:05,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:58:05,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:58:05,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:58:05,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:58:05,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:58:05,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:58:05,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:58:05,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:58:05,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:58:05,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:58:05,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:58:05,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:58:05,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:58:05,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:58:05,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:58:05,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:58:05,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:58:05,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:58:05,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:58:05,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:58:05,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:58:05,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:58:05,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:58:05,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:58:05,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:58:05,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:58:05,609 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:58:05,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:58:05,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:58:05,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:58:05,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:58:05,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:58:05,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:58:05,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:58:05,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:58:05,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:58:05,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:58:05,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:58:05,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:58:05,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:58:05,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:58:05,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:58:05,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:05,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:58:05,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:58:05,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:58:05,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:58:05,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:58:05,622 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:58:05,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:58:05,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:58:05,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb2ea6991951b6a9c5c1df0de2ac5ff84f75971959d591fa5f258025f94929 [2022-07-21 08:58:05,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:58:05,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:58:05,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:58:05,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:58:05,962 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:58:05,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2022-07-21 08:58:06,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279595ac3/7b0951b0fcd74f20b359cbdb94f972f4/FLAG0ce538cea [2022-07-21 08:58:06,497 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:58:06,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2022-07-21 08:58:06,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279595ac3/7b0951b0fcd74f20b359cbdb94f972f4/FLAG0ce538cea [2022-07-21 08:58:06,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/279595ac3/7b0951b0fcd74f20b359cbdb94f972f4 [2022-07-21 08:58:06,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:58:06,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:58:06,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:06,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:58:06,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:58:06,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:06" (1/1) ... [2022-07-21 08:58:06,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1801dece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:06, skipping insertion in model container [2022-07-21 08:58:06,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:58:06" (1/1) ... [2022-07-21 08:58:06,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:58:06,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:58:07,085 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/weaver/chl-collitem-subst.wvr.c[3544,3557] [2022-07-21 08:58:07,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:07,098 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:58:07,147 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/weaver/chl-collitem-subst.wvr.c[3544,3557] [2022-07-21 08:58:07,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:58:07,160 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:58:07,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07 WrapperNode [2022-07-21 08:58:07,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:58:07,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:07,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:58:07,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:58:07,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,200 INFO L137 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 353 [2022-07-21 08:58:07,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:58:07,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:58:07,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:58:07,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:58:07,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:58:07,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:58:07,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:58:07,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:58:07,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (1/1) ... [2022-07-21 08:58:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:58:07,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:58:07,260 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) [2022-07-21 08:58:07,267 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 [2022-07-21 08:58:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:58:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:58:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:58:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:58:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:58:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:58:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:58:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:58:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:58:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:58:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:58:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:58:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:58:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:58:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:58:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:58:07,298 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:58:07,374 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:58:07,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:58:08,024 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:58:08,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:58:08,439 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:58:08,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:08 BoogieIcfgContainer [2022-07-21 08:58:08,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:58:08,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:58:08,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:58:08,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:58:08,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:58:06" (1/3) ... [2022-07-21 08:58:08,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f9931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:08, skipping insertion in model container [2022-07-21 08:58:08,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:58:07" (2/3) ... [2022-07-21 08:58:08,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f9931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:58:08, skipping insertion in model container [2022-07-21 08:58:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:08" (3/3) ... [2022-07-21 08:58:08,448 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2022-07-21 08:58:08,452 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:58:08,460 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:58:08,460 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:58:08,460 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:58:08,533 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:58:08,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 133 transitions, 290 flow [2022-07-21 08:58:08,640 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2022-07-21 08:58:08,647 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:08,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-07-21 08:58:08,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 133 transitions, 290 flow [2022-07-21 08:58:08,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 119 transitions, 256 flow [2022-07-21 08:58:08,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:58:08,675 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f8d609d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73260bc1 [2022-07-21 08:58:08,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:58:08,702 INFO L129 PetriNetUnfolder]: 2/118 cut-off events. [2022-07-21 08:58:08,705 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:58:08,705 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:08,706 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:08,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 667153535, now seen corresponding path program 1 times [2022-07-21 08:58:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:08,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968234811] [2022-07-21 08:58:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:10,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:10,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968234811] [2022-07-21 08:58:10,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968234811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:10,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:10,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:10,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610636438] [2022-07-21 08:58:10,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:10,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:10,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:10,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:10,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:10,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:10,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:12,701 INFO L129 PetriNetUnfolder]: 14/222 cut-off events. [2022-07-21 08:58:12,702 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2022-07-21 08:58:12,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 222 events. 14/222 cut-off events. For 55/61 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 474 event pairs, 7 based on Foata normal form. 7/218 useless extension candidates. Maximal degree in co-relation 136. Up to 48 conditions per place. [2022-07-21 08:58:12,705 INFO L132 encePairwiseOnDemand]: 120/133 looper letters, 57 selfloop transitions, 2 changer transitions 17/147 dead transitions. [2022-07-21 08:58:12,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 147 transitions, 488 flow [2022-07-21 08:58:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:58:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:58:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1175 transitions. [2022-07-21 08:58:12,723 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6795835743204164 [2022-07-21 08:58:12,724 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1175 transitions. [2022-07-21 08:58:12,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1175 transitions. [2022-07-21 08:58:12,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:12,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1175 transitions. [2022-07-21 08:58:12,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.38461538461539) internal successors, (1175), 13 states have internal predecessors, (1175), 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) [2022-07-21 08:58:12,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 133.0) internal successors, (1862), 14 states have internal predecessors, (1862), 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) [2022-07-21 08:58:12,745 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 133.0) internal successors, (1862), 14 states have internal predecessors, (1862), 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) [2022-07-21 08:58:12,747 INFO L186 Difference]: Start difference. First operand has 127 places, 119 transitions, 256 flow. Second operand 13 states and 1175 transitions. [2022-07-21 08:58:12,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 147 transitions, 488 flow [2022-07-21 08:58:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 147 transitions, 460 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:58:12,754 INFO L242 Difference]: Finished difference. Result has 141 places, 116 transitions, 261 flow [2022-07-21 08:58:12,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=261, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2022-07-21 08:58:12,759 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 14 predicate places. [2022-07-21 08:58:12,759 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 261 flow [2022-07-21 08:58:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:12,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:12,760 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:12,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:58:12,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1680753933, now seen corresponding path program 2 times [2022-07-21 08:58:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:12,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505396338] [2022-07-21 08:58:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:16,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505396338] [2022-07-21 08:58:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505396338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:16,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:16,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924273204] [2022-07-21 08:58:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:16,565 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:16,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:16,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:16,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:16,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:17,628 INFO L129 PetriNetUnfolder]: 13/251 cut-off events. [2022-07-21 08:58:17,628 INFO L130 PetriNetUnfolder]: For 64/72 co-relation queries the response was YES. [2022-07-21 08:58:17,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 251 events. 13/251 cut-off events. For 64/72 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 718 event pairs, 5 based on Foata normal form. 2/247 useless extension candidates. Maximal degree in co-relation 404. Up to 42 conditions per place. [2022-07-21 08:58:17,630 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 57 selfloop transitions, 3 changer transitions 12/143 dead transitions. [2022-07-21 08:58:17,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 498 flow [2022-07-21 08:58:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 912 transitions. [2022-07-21 08:58:17,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2022-07-21 08:58:17,634 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 912 transitions. [2022-07-21 08:58:17,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 912 transitions. [2022-07-21 08:58:17,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:17,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 912 transitions. [2022-07-21 08:58:17,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.2) internal successors, (912), 10 states have internal predecessors, (912), 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) [2022-07-21 08:58:17,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:17,640 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:17,641 INFO L186 Difference]: Start difference. First operand has 141 places, 116 transitions, 261 flow. Second operand 10 states and 912 transitions. [2022-07-21 08:58:17,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 498 flow [2022-07-21 08:58:17,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 143 transitions, 461 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:17,645 INFO L242 Difference]: Finished difference. Result has 140 places, 117 transitions, 278 flow [2022-07-21 08:58:17,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=278, PETRI_PLACES=140, PETRI_TRANSITIONS=117} [2022-07-21 08:58:17,646 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 13 predicate places. [2022-07-21 08:58:17,647 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 117 transitions, 278 flow [2022-07-21 08:58:17,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:17,647 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:17,648 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:17,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:58:17,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:17,649 INFO L85 PathProgramCache]: Analyzing trace with hash 450472771, now seen corresponding path program 3 times [2022-07-21 08:58:17,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:17,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722605411] [2022-07-21 08:58:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:17,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722605411] [2022-07-21 08:58:18,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722605411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:18,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:18,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557154037] [2022-07-21 08:58:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:18,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:18,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 117 transitions, 278 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:18,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:18,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:18,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:20,134 INFO L129 PetriNetUnfolder]: 11/228 cut-off events. [2022-07-21 08:58:20,134 INFO L130 PetriNetUnfolder]: For 96/99 co-relation queries the response was YES. [2022-07-21 08:58:20,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 228 events. 11/228 cut-off events. For 96/99 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 546 event pairs, 3 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 390. Up to 43 conditions per place. [2022-07-21 08:58:20,136 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 57 selfloop transitions, 3 changer transitions 14/145 dead transitions. [2022-07-21 08:58:20,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 145 transitions, 533 flow [2022-07-21 08:58:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 912 transitions. [2022-07-21 08:58:20,141 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2022-07-21 08:58:20,143 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 912 transitions. [2022-07-21 08:58:20,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 912 transitions. [2022-07-21 08:58:20,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:20,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 912 transitions. [2022-07-21 08:58:20,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.2) internal successors, (912), 10 states have internal predecessors, (912), 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) [2022-07-21 08:58:20,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:20,149 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:20,149 INFO L186 Difference]: Start difference. First operand has 140 places, 117 transitions, 278 flow. Second operand 10 states and 912 transitions. [2022-07-21 08:58:20,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 145 transitions, 533 flow [2022-07-21 08:58:20,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 493 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:20,160 INFO L242 Difference]: Finished difference. Result has 144 places, 117 transitions, 288 flow [2022-07-21 08:58:20,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=288, PETRI_PLACES=144, PETRI_TRANSITIONS=117} [2022-07-21 08:58:20,162 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 17 predicate places. [2022-07-21 08:58:20,163 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 117 transitions, 288 flow [2022-07-21 08:58:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:20,163 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:20,164 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:20,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:58:20,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 763523587, now seen corresponding path program 4 times [2022-07-21 08:58:20,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:20,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667185147] [2022-07-21 08:58:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:21,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667185147] [2022-07-21 08:58:21,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667185147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:21,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:21,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998582273] [2022-07-21 08:58:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:21,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:21,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 117 transitions, 288 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:21,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:21,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:21,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:21,916 INFO L129 PetriNetUnfolder]: 8/184 cut-off events. [2022-07-21 08:58:21,916 INFO L130 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2022-07-21 08:58:21,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 184 events. 8/184 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 296 event pairs, 4 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 324. Up to 37 conditions per place. [2022-07-21 08:58:21,919 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 43 selfloop transitions, 1 changer transitions 17/132 dead transitions. [2022-07-21 08:58:21,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 471 flow [2022-07-21 08:58:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 901 transitions. [2022-07-21 08:58:21,922 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6774436090225564 [2022-07-21 08:58:21,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 901 transitions. [2022-07-21 08:58:21,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 901 transitions. [2022-07-21 08:58:21,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:21,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 901 transitions. [2022-07-21 08:58:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 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) [2022-07-21 08:58:21,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:21,928 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:21,928 INFO L186 Difference]: Start difference. First operand has 144 places, 117 transitions, 288 flow. Second operand 10 states and 901 transitions. [2022-07-21 08:58:21,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 471 flow [2022-07-21 08:58:21,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 436 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-07-21 08:58:21,936 INFO L242 Difference]: Finished difference. Result has 145 places, 115 transitions, 269 flow [2022-07-21 08:58:21,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=145, PETRI_TRANSITIONS=115} [2022-07-21 08:58:21,942 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 18 predicate places. [2022-07-21 08:58:21,942 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 115 transitions, 269 flow [2022-07-21 08:58:21,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:21,943 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:21,944 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:21,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:58:21,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash 619238341, now seen corresponding path program 5 times [2022-07-21 08:58:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662226151] [2022-07-21 08:58:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662226151] [2022-07-21 08:58:23,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662226151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:23,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:23,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340131044] [2022-07-21 08:58:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:23,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:23,087 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:23,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 115 transitions, 269 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:23,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:23,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:23,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:24,488 INFO L129 PetriNetUnfolder]: 1/146 cut-off events. [2022-07-21 08:58:24,489 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-07-21 08:58:24,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 146 events. 1/146 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 117 event pairs, 0 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 239. Up to 32 conditions per place. [2022-07-21 08:58:24,489 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 43 selfloop transitions, 1 changer transitions 13/128 dead transitions. [2022-07-21 08:58:24,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 128 transitions, 440 flow [2022-07-21 08:58:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 898 transitions. [2022-07-21 08:58:24,493 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.675187969924812 [2022-07-21 08:58:24,493 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 898 transitions. [2022-07-21 08:58:24,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 898 transitions. [2022-07-21 08:58:24,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:24,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 898 transitions. [2022-07-21 08:58:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 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) [2022-07-21 08:58:24,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:24,499 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:24,499 INFO L186 Difference]: Start difference. First operand has 145 places, 115 transitions, 269 flow. Second operand 10 states and 898 transitions. [2022-07-21 08:58:24,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 128 transitions, 440 flow [2022-07-21 08:58:24,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 392 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-21 08:58:24,502 INFO L242 Difference]: Finished difference. Result has 141 places, 115 transitions, 261 flow [2022-07-21 08:58:24,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=261, PETRI_PLACES=141, PETRI_TRANSITIONS=115} [2022-07-21 08:58:24,503 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 14 predicate places. [2022-07-21 08:58:24,503 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 115 transitions, 261 flow [2022-07-21 08:58:24,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:24,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:58:24,504 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:58:24,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:58:24,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:58:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:58:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash 231083089, now seen corresponding path program 6 times [2022-07-21 08:58:24,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:58:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020836056] [2022-07-21 08:58:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:58:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:58:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:58:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:58:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:58:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020836056] [2022-07-21 08:58:25,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020836056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:58:25,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:58:25,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:58:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514183868] [2022-07-21 08:58:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:58:25,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:58:25,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:58:25,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:58:25,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:58:25,459 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-21 08:58:25,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 115 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:25,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:58:25,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-21 08:58:25,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:58:26,683 INFO L129 PetriNetUnfolder]: 1/119 cut-off events. [2022-07-21 08:58:26,684 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-21 08:58:26,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 119 events. 1/119 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 1 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 186. Up to 34 conditions per place. [2022-07-21 08:58:26,684 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2022-07-21 08:58:26,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 113 transitions, 347 flow [2022-07-21 08:58:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:58:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:58:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 885 transitions. [2022-07-21 08:58:26,686 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6654135338345865 [2022-07-21 08:58:26,687 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 885 transitions. [2022-07-21 08:58:26,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 885 transitions. [2022-07-21 08:58:26,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:58:26,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 885 transitions. [2022-07-21 08:58:26,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.5) internal successors, (885), 10 states have internal predecessors, (885), 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) [2022-07-21 08:58:26,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:26,692 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 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) [2022-07-21 08:58:26,692 INFO L186 Difference]: Start difference. First operand has 141 places, 115 transitions, 261 flow. Second operand 10 states and 885 transitions. [2022-07-21 08:58:26,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 113 transitions, 347 flow [2022-07-21 08:58:26,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 113 transitions, 333 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-21 08:58:26,694 INFO L242 Difference]: Finished difference. Result has 133 places, 0 transitions, 0 flow [2022-07-21 08:58:26,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=133, PETRI_TRANSITIONS=0} [2022-07-21 08:58:26,695 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 6 predicate places. [2022-07-21 08:58:26,695 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 0 transitions, 0 flow [2022-07-21 08:58:26,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 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) [2022-07-21 08:58:26,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-21 08:58:26,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-21 08:58:26,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:58:26,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-21 08:58:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:58:26,699 INFO L356 BasicCegarLoop]: Path program histogram: [6] [2022-07-21 08:58:26,702 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:58:26,702 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:58:26,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:58:26 BasicIcfg [2022-07-21 08:58:26,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:58:26,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:58:26,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:58:26,707 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:58:26,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:58:08" (3/4) ... [2022-07-21 08:58:26,710 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:58:26,715 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-21 08:58:26,715 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-21 08:58:26,715 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-21 08:58:26,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-21 08:58:26,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:58:26,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:58:26,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:58:26,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:58:26,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:58:26,755 INFO L158 Benchmark]: Toolchain (without parser) took 19848.39ms. Allocated memory was 56.6MB in the beginning and 478.2MB in the end (delta: 421.5MB). Free memory was 35.0MB in the beginning and 288.0MB in the end (delta: -253.0MB). Peak memory consumption was 167.2MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,755 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:58:26,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.75ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.7MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.00ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 35.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,756 INFO L158 Benchmark]: Boogie Preprocessor took 28.35ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 33.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,757 INFO L158 Benchmark]: RCFGBuilder took 1211.02ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 33.6MB in the beginning and 49.0MB in the end (delta: -15.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,757 INFO L158 Benchmark]: TraceAbstraction took 18263.58ms. Allocated memory was 86.0MB in the beginning and 478.2MB in the end (delta: 392.2MB). Free memory was 48.4MB in the beginning and 291.2MB in the end (delta: -242.7MB). Peak memory consumption was 148.9MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,758 INFO L158 Benchmark]: Witness Printer took 47.34ms. Allocated memory is still 478.2MB. Free memory was 291.2MB in the beginning and 288.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:58:26,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.75ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 38.7MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.00ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 35.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.35ms. Allocated memory is still 56.6MB. Free memory was 35.7MB in the beginning and 33.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1211.02ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 33.6MB in the beginning and 49.0MB in the end (delta: -15.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18263.58ms. Allocated memory was 86.0MB in the beginning and 478.2MB in the end (delta: 392.2MB). Free memory was 48.4MB in the beginning and 291.2MB in the end (delta: -242.7MB). Peak memory consumption was 148.9MB. Max. memory is 16.1GB. * Witness Printer took 47.34ms. Allocated memory is still 478.2MB. Free memory was 291.2MB in the beginning and 288.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 147 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 1145 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1271 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1113 IncrementalHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 220 mSDtfsCounter, 1113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=3, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 690 NumberOfCodeBlocks, 690 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 11168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:58:26,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE