./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --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/weaver/spaghetti.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 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:14:56,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:14:56,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:14:56,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:14:56,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:14:56,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:14:56,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:14:56,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:14:56,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:14:56,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:14:56,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:14:56,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:14:56,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:14:56,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:14:56,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:14:56,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:14:56,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:14:56,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:14:56,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:14:56,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:14:56,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:14:56,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:14:56,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:14:56,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:14:56,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:14:56,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:14:56,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:14:56,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:14:56,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:14:56,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:14:56,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:14:56,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:14:56,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:14:56,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:14:56,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:14:56,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:14:56,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:14:56,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:14:56,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:14:56,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:14:56,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:14:56,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:14:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:14:56,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:14:56,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:14:56,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:14:56,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:14:56,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:14:56,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:14:56,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:14:56,582 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:14:56,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:14:56,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:14:56,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:14:56,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:14:56,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:14:56,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:14:56,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:14:56,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:14:56,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:14:56,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:14:56,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:14:56,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:14:56,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:14:56,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:14:56,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:14:56,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:14:56,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:14:56,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:14:56,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:14:56,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:14:56,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 [2021-12-17 23:14:56,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:14:56,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:14:56,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:14:56,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:14:56,867 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:14:56,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-12-17 23:14:56,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44b6fee3/924a1a7d3bbe4b8b8751a2b6e55e9d9e/FLAGd45b57769 [2021-12-17 23:14:57,339 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:14:57,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-12-17 23:14:57,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44b6fee3/924a1a7d3bbe4b8b8751a2b6e55e9d9e/FLAGd45b57769 [2021-12-17 23:14:57,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44b6fee3/924a1a7d3bbe4b8b8751a2b6e55e9d9e [2021-12-17 23:14:57,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:14:57,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:14:57,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:14:57,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:14:57,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:14:57,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b899ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57, skipping insertion in model container [2021-12-17 23:14:57,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:14:57,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:14:57,628 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/spaghetti.wvr.c[3221,3234] [2021-12-17 23:14:57,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:14:57,641 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:14:57,668 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/spaghetti.wvr.c[3221,3234] [2021-12-17 23:14:57,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:14:57,683 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:14:57,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57 WrapperNode [2021-12-17 23:14:57,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:14:57,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:14:57,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:14:57,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:14:57,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,730 INFO L137 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2021-12-17 23:14:57,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:14:57,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:14:57,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:14:57,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:14:57,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:14:57,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:14:57,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:14:57,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:14:57,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (1/1) ... [2021-12-17 23:14:57,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:14:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:14:57,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 23:14:57,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 23:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 23:14:57,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 23:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 23:14:57,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 23:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-17 23:14:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-17 23:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-17 23:14:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-17 23:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 23:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 23:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:14:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:14:57,830 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 23:14:57,911 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:14:57,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:14:58,072 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:14:58,084 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:14:58,099 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 23:14:58,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:14:58 BoogieIcfgContainer [2021-12-17 23:14:58,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:14:58,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:14:58,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:14:58,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:14:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:14:57" (1/3) ... [2021-12-17 23:14:58,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e01de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:14:58, skipping insertion in model container [2021-12-17 23:14:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:14:57" (2/3) ... [2021-12-17 23:14:58,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e01de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:14:58, skipping insertion in model container [2021-12-17 23:14:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:14:58" (3/3) ... [2021-12-17 23:14:58,108 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2021-12-17 23:14:58,112 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:14:58,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:14:58,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:14:58,128 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:14:58,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,201 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,201 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,203 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,203 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,203 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,203 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,204 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,204 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,205 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,205 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,214 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,217 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,217 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,217 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:14:58,226 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-17 23:14:58,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:14:58,275 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 23:14:58,275 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-17 23:14:58,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 126 transitions, 284 flow [2021-12-17 23:14:58,346 INFO L129 PetriNetUnfolder]: 9/122 cut-off events. [2021-12-17 23:14:58,351 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-17 23:14:58,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 9/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2021-12-17 23:14:58,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 126 transitions, 284 flow [2021-12-17 23:14:58,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 242 flow [2021-12-17 23:14:58,386 INFO L129 PetriNetUnfolder]: 9/108 cut-off events. [2021-12-17 23:14:58,393 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-17 23:14:58,393 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:14:58,394 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:14:58,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:14:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:14:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1361627806, now seen corresponding path program 1 times [2021-12-17 23:14:58,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:14:58,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398315451] [2021-12-17 23:14:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:14:58,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:14:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:14:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:14:58,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:14:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398315451] [2021-12-17 23:14:58,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398315451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:14:58,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:14:58,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 23:14:58,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857678716] [2021-12-17 23:14:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:14:58,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 23:14:58,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:14:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 23:14:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 23:14:58,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 126 [2021-12-17 23:14:58,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:58,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:14:58,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 126 [2021-12-17 23:14:58,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:14:58,727 INFO L129 PetriNetUnfolder]: 21/137 cut-off events. [2021-12-17 23:14:58,731 INFO L130 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2021-12-17 23:14:58,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 137 events. 21/137 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 233 event pairs, 9 based on Foata normal form. 34/161 useless extension candidates. Maximal degree in co-relation 118. Up to 28 conditions per place. [2021-12-17 23:14:58,736 INFO L132 encePairwiseOnDemand]: 121/126 looper letters, 10 selfloop transitions, 0 changer transitions 1/104 dead transitions. [2021-12-17 23:14:58,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 252 flow [2021-12-17 23:14:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 23:14:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-17 23:14:58,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2021-12-17 23:14:58,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9325396825396826 [2021-12-17 23:14:58,750 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2021-12-17 23:14:58,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2021-12-17 23:14:58,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:14:58,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2021-12-17 23:14:58,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:58,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:58,766 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:58,768 INFO L186 Difference]: Start difference. First operand has 113 places, 109 transitions, 242 flow. Second operand 2 states and 235 transitions. [2021-12-17 23:14:58,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 252 flow [2021-12-17 23:14:58,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-17 23:14:58,784 INFO L242 Difference]: Finished difference. Result has 106 places, 103 transitions, 214 flow [2021-12-17 23:14:58,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=214, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2021-12-17 23:14:58,789 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, -7 predicate places. [2021-12-17 23:14:58,789 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 214 flow [2021-12-17 23:14:58,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:58,790 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:14:58,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:14:58,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:14:58,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:14:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:14:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1757291632, now seen corresponding path program 1 times [2021-12-17 23:14:58,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:14:58,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604198767] [2021-12-17 23:14:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:14:58,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:14:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:14:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:14:59,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:14:59,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604198767] [2021-12-17 23:14:59,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604198767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:14:59,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:14:59,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 23:14:59,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492639105] [2021-12-17 23:14:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:14:59,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 23:14:59,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:14:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 23:14:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 23:14:59,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 126 [2021-12-17 23:14:59,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:14:59,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 126 [2021-12-17 23:14:59,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:14:59,570 INFO L129 PetriNetUnfolder]: 960/1945 cut-off events. [2021-12-17 23:14:59,571 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-12-17 23:14:59,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 1945 events. 960/1945 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12240 event pairs, 257 based on Foata normal form. 1/1920 useless extension candidates. Maximal degree in co-relation 3383. Up to 610 conditions per place. [2021-12-17 23:14:59,608 INFO L132 encePairwiseOnDemand]: 112/126 looper letters, 44 selfloop transitions, 13 changer transitions 12/142 dead transitions. [2021-12-17 23:14:59,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 438 flow [2021-12-17 23:14:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 23:14:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 23:14:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2021-12-17 23:14:59,615 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.798941798941799 [2021-12-17 23:14:59,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2021-12-17 23:14:59,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2021-12-17 23:14:59,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:14:59,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2021-12-17 23:14:59,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,623 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,623 INFO L186 Difference]: Start difference. First operand has 106 places, 103 transitions, 214 flow. Second operand 6 states and 604 transitions. [2021-12-17 23:14:59,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 438 flow [2021-12-17 23:14:59,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-17 23:14:59,629 INFO L242 Difference]: Finished difference. Result has 115 places, 113 transitions, 308 flow [2021-12-17 23:14:59,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2021-12-17 23:14:59,630 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 2 predicate places. [2021-12-17 23:14:59,630 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 308 flow [2021-12-17 23:14:59,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:14:59,631 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 23:14:59,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:14:59,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-17 23:14:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:14:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1882097838, now seen corresponding path program 2 times [2021-12-17 23:14:59,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:14:59,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571489298] [2021-12-17 23:14:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:14:59,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:14:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:14:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:14:59,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:14:59,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571489298] [2021-12-17 23:14:59,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571489298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:14:59,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:14:59,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 23:14:59,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25502900] [2021-12-17 23:14:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:14:59,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 23:14:59,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:14:59,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 23:14:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 23:14:59,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 126 [2021-12-17 23:14:59,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:14:59,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:14:59,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 126 [2021-12-17 23:14:59,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:15:00,087 INFO L129 PetriNetUnfolder]: 1107/2340 cut-off events. [2021-12-17 23:15:00,093 INFO L130 PetriNetUnfolder]: For 1029/1029 co-relation queries the response was YES. [2021-12-17 23:15:00,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 2340 events. 1107/2340 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16209 event pairs, 320 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 5088. Up to 893 conditions per place. [2021-12-17 23:15:00,104 INFO L132 encePairwiseOnDemand]: 113/126 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2021-12-17 23:15:00,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 154 transitions, 630 flow [2021-12-17 23:15:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 23:15:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 23:15:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2021-12-17 23:15:00,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2021-12-17 23:15:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2021-12-17 23:15:00,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2021-12-17 23:15:00,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:15:00,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2021-12-17 23:15:00,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:15:00,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:15:00,110 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:15:00,110 INFO L186 Difference]: Start difference. First operand has 115 places, 113 transitions, 308 flow. Second operand 6 states and 600 transitions. [2021-12-17 23:15:00,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 154 transitions, 630 flow [2021-12-17 23:15:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 628 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-17 23:15:00,115 INFO L242 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2021-12-17 23:15:00,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2021-12-17 23:15:00,133 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2021-12-17 23:15:00,134 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2021-12-17 23:15:00,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 23:15:00,136 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-17 23:15:00,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-12-17 23:15:00,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-12-17 23:15:00,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-12-17 23:15:00,137 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-12-17 23:15:00,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 23:15:00,141 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-12-17 23:15:00,142 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 23:15:00,142 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 23:15:00,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:15:00 BasicIcfg [2021-12-17 23:15:00,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 23:15:00,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 23:15:00,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 23:15:00,152 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 23:15:00,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:14:58" (3/4) ... [2021-12-17 23:15:00,154 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 23:15:00,159 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-17 23:15:00,159 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-17 23:15:00,159 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-17 23:15:00,159 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-12-17 23:15:00,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-12-17 23:15:00,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 23:15:00,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 23:15:00,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 23:15:00,190 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 23:15:00,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 23:15:00,191 INFO L158 Benchmark]: Toolchain (without parser) took 2820.35ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 78.2MB in the beginning and 83.2MB in the end (delta: -5.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,191 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory was 33.4MB in the beginning and 33.4MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:15:00,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.26ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 84.8MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.93ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:15:00,192 INFO L158 Benchmark]: Boogie Preprocessor took 37.72ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,193 INFO L158 Benchmark]: RCFGBuilder took 331.66ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 68.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,193 INFO L158 Benchmark]: TraceAbstraction took 2047.27ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 85.5MB in the end (delta: -17.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,193 INFO L158 Benchmark]: Witness Printer took 39.04ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 83.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 23:15:00,195 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 75.5MB. Free memory was 33.4MB in the beginning and 33.4MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.26ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 84.8MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.93ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.72ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.66ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 68.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2047.27ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 85.5MB in the end (delta: -17.4MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Witness Printer took 39.04ms. Allocated memory is still 136.3MB. Free memory was 85.5MB in the beginning and 83.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 127]: 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 9 procedures, 160 locations, 5 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: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 192 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 61 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-12-17 23:15:00,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE