./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 eb692b52 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-?-eb692b5 [2022-07-19 21:25:23,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:23,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:23,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:23,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:23,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:23,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:23,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:23,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:23,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:23,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:23,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:23,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:23,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:23,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:23,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:23,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:23,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:23,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:23,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:23,793 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:23,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:23,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:23,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:23,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:23,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:23,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:23,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:23,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:23,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:23,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:23,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:23,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:23,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:23,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:23,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:23,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:23,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:23,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:23,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:23,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:23,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:23,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:23,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:23,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:23,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:23,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:23,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:23,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:23,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:23,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:23,854 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:23,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:23,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:23,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:23,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:23,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:23,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:23,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:23,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:23,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:23,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:23,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:23,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:23,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:23,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:23,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:23,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:23,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:23,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:23,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:23,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb2ea6991951b6a9c5c1df0de2ac5ff84f75971959d591fa5f258025f94929 [2022-07-19 21:25:24,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:24,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:24,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:24,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:24,117 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:24,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2022-07-19 21:25:24,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61eb3df6c/b1c0445144734f6aa3b1a98c76249b80/FLAG1461140d6 [2022-07-19 21:25:24,644 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:24,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-collitem-subst.wvr.c [2022-07-19 21:25:24,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61eb3df6c/b1c0445144734f6aa3b1a98c76249b80/FLAG1461140d6 [2022-07-19 21:25:24,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61eb3df6c/b1c0445144734f6aa3b1a98c76249b80 [2022-07-19 21:25:24,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:24,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:24,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:24,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:24,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:24,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c58011f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24, skipping insertion in model container [2022-07-19 21:25:24,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:24,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:24,848 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] [2022-07-19 21:25:24,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:24,870 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:24,896 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] [2022-07-19 21:25:24,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:24,911 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:24,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24 WrapperNode [2022-07-19 21:25:24,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:24,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:24,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:24,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:24,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,967 INFO L137 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 353 [2022-07-19 21:25:24,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:24,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:24,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:24,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:24,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:24,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:25,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:25,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:25,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:25,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (1/1) ... [2022-07-19 21:25:25,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:25,041 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) [2022-07-19 21:25:25,043 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 [2022-07-19 21:25:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:25:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:25:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:25,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:25,090 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:25,166 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:25,167 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:25,657 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:26,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:26,087 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:26 BoogieIcfgContainer [2022-07-19 21:25:26,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:26,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:26,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:26,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:26,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:24" (1/3) ... [2022-07-19 21:25:26,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5452a5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:26, skipping insertion in model container [2022-07-19 21:25:26,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:24" (2/3) ... [2022-07-19 21:25:26,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5452a5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:26, skipping insertion in model container [2022-07-19 21:25:26,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:26" (3/3) ... [2022-07-19 21:25:26,098 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2022-07-19 21:25:26,103 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:26,111 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:26,111 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:26,111 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:26,217 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:25:26,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 133 transitions, 290 flow [2022-07-19 21:25:26,339 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2022-07-19 21:25:26,340 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:26,342 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. [2022-07-19 21:25:26,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 133 transitions, 290 flow [2022-07-19 21:25:26,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 119 transitions, 256 flow [2022-07-19 21:25:26,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:26,370 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@79ab607a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14a80852 [2022-07-19 21:25:26,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:25:26,403 INFO L129 PetriNetUnfolder]: 2/118 cut-off events. [2022-07-19 21:25:26,406 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:25:26,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:26,407 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] [2022-07-19 21:25:26,408 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)] === [2022-07-19 21:25:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 667153535, now seen corresponding path program 1 times [2022-07-19 21:25:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:26,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864231019] [2022-07-19 21:25:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:28,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:28,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864231019] [2022-07-19 21:25:28,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864231019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:28,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:28,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856132813] [2022-07-19 21:25:28,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:28,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:28,803 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) [2022-07-19 21:25:28,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:28,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:28,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:30,756 INFO L129 PetriNetUnfolder]: 14/222 cut-off events. [2022-07-19 21:25:30,757 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2022-07-19 21:25:30,758 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. [2022-07-19 21:25:30,760 INFO L132 encePairwiseOnDemand]: 120/133 looper letters, 57 selfloop transitions, 2 changer transitions 17/147 dead transitions. [2022-07-19 21:25:30,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 147 transitions, 488 flow [2022-07-19 21:25:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1175 transitions. [2022-07-19 21:25:30,778 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6795835743204164 [2022-07-19 21:25:30,779 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1175 transitions. [2022-07-19 21:25:30,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1175 transitions. [2022-07-19 21:25:30,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:30,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1175 transitions. [2022-07-19 21:25:30,792 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) [2022-07-19 21:25:30,800 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) [2022-07-19 21:25:30,801 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) [2022-07-19 21:25:30,803 INFO L186 Difference]: Start difference. First operand has 127 places, 119 transitions, 256 flow. Second operand 13 states and 1175 transitions. [2022-07-19 21:25:30,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 147 transitions, 488 flow [2022-07-19 21:25:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 147 transitions, 460 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:30,811 INFO L242 Difference]: Finished difference. Result has 141 places, 116 transitions, 261 flow [2022-07-19 21:25:30,813 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} [2022-07-19 21:25:30,816 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 14 predicate places. [2022-07-19 21:25:30,817 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 261 flow [2022-07-19 21:25:30,818 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) [2022-07-19 21:25:30,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:30,818 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] [2022-07-19 21:25:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:30,819 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)] === [2022-07-19 21:25:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1680753933, now seen corresponding path program 2 times [2022-07-19 21:25:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:30,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764896175] [2022-07-19 21:25:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:30,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:34,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764896175] [2022-07-19 21:25:34,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764896175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:34,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:34,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406237039] [2022-07-19 21:25:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:34,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:34,636 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:34,638 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) [2022-07-19 21:25:34,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:34,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:34,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:35,800 INFO L129 PetriNetUnfolder]: 13/251 cut-off events. [2022-07-19 21:25:35,800 INFO L130 PetriNetUnfolder]: For 64/72 co-relation queries the response was YES. [2022-07-19 21:25:35,801 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. [2022-07-19 21:25:35,802 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 57 selfloop transitions, 3 changer transitions 12/143 dead transitions. [2022-07-19 21:25:35,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 498 flow [2022-07-19 21:25:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 912 transitions. [2022-07-19 21:25:35,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2022-07-19 21:25:35,805 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 912 transitions. [2022-07-19 21:25:35,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 912 transitions. [2022-07-19 21:25:35,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:35,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 912 transitions. [2022-07-19 21:25:35,808 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) [2022-07-19 21:25:35,811 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) [2022-07-19 21:25:35,811 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) [2022-07-19 21:25:35,812 INFO L186 Difference]: Start difference. First operand has 141 places, 116 transitions, 261 flow. Second operand 10 states and 912 transitions. [2022-07-19 21:25:35,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 498 flow [2022-07-19 21:25:35,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 143 transitions, 461 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:35,817 INFO L242 Difference]: Finished difference. Result has 140 places, 117 transitions, 278 flow [2022-07-19 21:25:35,817 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} [2022-07-19 21:25:35,818 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 13 predicate places. [2022-07-19 21:25:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 117 transitions, 278 flow [2022-07-19 21:25:35,819 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) [2022-07-19 21:25:35,819 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:35,819 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] [2022-07-19 21:25:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:35,819 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)] === [2022-07-19 21:25:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 450472771, now seen corresponding path program 3 times [2022-07-19 21:25:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:35,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62232077] [2022-07-19 21:25:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:36,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62232077] [2022-07-19 21:25:36,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62232077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:36,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:36,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881061952] [2022-07-19 21:25:36,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:36,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:36,995 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) [2022-07-19 21:25:36,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:36,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:36,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:38,265 INFO L129 PetriNetUnfolder]: 11/228 cut-off events. [2022-07-19 21:25:38,265 INFO L130 PetriNetUnfolder]: For 96/99 co-relation queries the response was YES. [2022-07-19 21:25:38,266 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. [2022-07-19 21:25:38,267 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 57 selfloop transitions, 3 changer transitions 14/145 dead transitions. [2022-07-19 21:25:38,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 145 transitions, 533 flow [2022-07-19 21:25:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 912 transitions. [2022-07-19 21:25:38,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2022-07-19 21:25:38,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 912 transitions. [2022-07-19 21:25:38,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 912 transitions. [2022-07-19 21:25:38,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:38,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 912 transitions. [2022-07-19 21:25:38,274 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) [2022-07-19 21:25:38,276 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) [2022-07-19 21:25:38,278 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) [2022-07-19 21:25:38,278 INFO L186 Difference]: Start difference. First operand has 140 places, 117 transitions, 278 flow. Second operand 10 states and 912 transitions. [2022-07-19 21:25:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 145 transitions, 533 flow [2022-07-19 21:25:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 493 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:38,288 INFO L242 Difference]: Finished difference. Result has 144 places, 117 transitions, 288 flow [2022-07-19 21:25:38,288 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} [2022-07-19 21:25:38,290 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 17 predicate places. [2022-07-19 21:25:38,291 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 117 transitions, 288 flow [2022-07-19 21:25:38,291 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) [2022-07-19 21:25:38,292 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:38,292 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] [2022-07-19 21:25:38,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:38,292 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)] === [2022-07-19 21:25:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash 763523587, now seen corresponding path program 4 times [2022-07-19 21:25:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:38,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430425853] [2022-07-19 21:25:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430425853] [2022-07-19 21:25:39,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430425853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:39,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:39,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559934592] [2022-07-19 21:25:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:39,170 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:39,171 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) [2022-07-19 21:25:39,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:39,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:39,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:40,066 INFO L129 PetriNetUnfolder]: 8/184 cut-off events. [2022-07-19 21:25:40,066 INFO L130 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2022-07-19 21:25:40,067 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. [2022-07-19 21:25:40,067 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 43 selfloop transitions, 1 changer transitions 17/132 dead transitions. [2022-07-19 21:25:40,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 471 flow [2022-07-19 21:25:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 901 transitions. [2022-07-19 21:25:40,071 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6774436090225564 [2022-07-19 21:25:40,072 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 901 transitions. [2022-07-19 21:25:40,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 901 transitions. [2022-07-19 21:25:40,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:40,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 901 transitions. [2022-07-19 21:25:40,074 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) [2022-07-19 21:25:40,077 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) [2022-07-19 21:25:40,077 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) [2022-07-19 21:25:40,078 INFO L186 Difference]: Start difference. First operand has 144 places, 117 transitions, 288 flow. Second operand 10 states and 901 transitions. [2022-07-19 21:25:40,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 471 flow [2022-07-19 21:25:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 436 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-07-19 21:25:40,082 INFO L242 Difference]: Finished difference. Result has 145 places, 115 transitions, 269 flow [2022-07-19 21:25:40,082 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} [2022-07-19 21:25:40,083 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 18 predicate places. [2022-07-19 21:25:40,083 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 115 transitions, 269 flow [2022-07-19 21:25:40,084 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) [2022-07-19 21:25:40,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:40,084 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] [2022-07-19 21:25:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:40,085 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)] === [2022-07-19 21:25:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 619238341, now seen corresponding path program 5 times [2022-07-19 21:25:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:40,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892040925] [2022-07-19 21:25:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892040925] [2022-07-19 21:25:41,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892040925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:41,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464093346] [2022-07-19 21:25:41,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:41,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:41,181 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) [2022-07-19 21:25:41,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:41,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:42,740 INFO L129 PetriNetUnfolder]: 1/146 cut-off events. [2022-07-19 21:25:42,740 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-07-19 21:25:42,743 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. [2022-07-19 21:25:42,743 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 43 selfloop transitions, 1 changer transitions 13/128 dead transitions. [2022-07-19 21:25:42,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 128 transitions, 440 flow [2022-07-19 21:25:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 898 transitions. [2022-07-19 21:25:42,747 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.675187969924812 [2022-07-19 21:25:42,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 898 transitions. [2022-07-19 21:25:42,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 898 transitions. [2022-07-19 21:25:42,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:42,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 898 transitions. [2022-07-19 21:25:42,750 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) [2022-07-19 21:25:42,753 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) [2022-07-19 21:25:42,753 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) [2022-07-19 21:25:42,754 INFO L186 Difference]: Start difference. First operand has 145 places, 115 transitions, 269 flow. Second operand 10 states and 898 transitions. [2022-07-19 21:25:42,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 128 transitions, 440 flow [2022-07-19 21:25:42,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 392 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-19 21:25:42,757 INFO L242 Difference]: Finished difference. Result has 141 places, 115 transitions, 261 flow [2022-07-19 21:25:42,758 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} [2022-07-19 21:25:42,758 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 14 predicate places. [2022-07-19 21:25:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 115 transitions, 261 flow [2022-07-19 21:25:42,759 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) [2022-07-19 21:25:42,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:42,759 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] [2022-07-19 21:25:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:42,760 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)] === [2022-07-19 21:25:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 231083089, now seen corresponding path program 6 times [2022-07-19 21:25:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:42,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448316632] [2022-07-19 21:25:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:43,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448316632] [2022-07-19 21:25:43,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448316632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:43,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:43,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381948236] [2022-07-19 21:25:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:43,706 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 133 [2022-07-19 21:25:43,707 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) [2022-07-19 21:25:43,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:43,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 133 [2022-07-19 21:25:43,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:44,954 INFO L129 PetriNetUnfolder]: 1/119 cut-off events. [2022-07-19 21:25:44,955 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-07-19 21:25:44,955 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. [2022-07-19 21:25:44,955 INFO L132 encePairwiseOnDemand]: 124/133 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2022-07-19 21:25:44,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 113 transitions, 347 flow [2022-07-19 21:25:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 885 transitions. [2022-07-19 21:25:44,957 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6654135338345865 [2022-07-19 21:25:44,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 885 transitions. [2022-07-19 21:25:44,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 885 transitions. [2022-07-19 21:25:44,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:44,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 885 transitions. [2022-07-19 21:25:44,961 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) [2022-07-19 21:25:44,963 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) [2022-07-19 21:25:44,964 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) [2022-07-19 21:25:44,964 INFO L186 Difference]: Start difference. First operand has 141 places, 115 transitions, 261 flow. Second operand 10 states and 885 transitions. [2022-07-19 21:25:44,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 113 transitions, 347 flow [2022-07-19 21:25:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 113 transitions, 333 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:44,966 INFO L242 Difference]: Finished difference. Result has 133 places, 0 transitions, 0 flow [2022-07-19 21:25:44,967 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} [2022-07-19 21:25:44,967 INFO L279 CegarLoopForPetriNet]: 127 programPoint places, 6 predicate places. [2022-07-19 21:25:44,968 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 0 transitions, 0 flow [2022-07-19 21:25:44,968 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) [2022-07-19 21:25:44,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 21:25:44,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-19 21:25:44,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:25:44,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-19 21:25:44,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:44,972 INFO L356 BasicCegarLoop]: Path program histogram: [6] [2022-07-19 21:25:44,975 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:25:44,975 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:25:44,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:25:44 BasicIcfg [2022-07-19 21:25:44,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:25:44,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:25:44,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:25:44,981 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:25:44,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:26" (3/4) ... [2022-07-19 21:25:44,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:25:44,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:25:44,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:25:44,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-19 21:25:44,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-19 21:25:44,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:25:44,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:25:44,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:25:45,032 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:25:45,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:25:45,033 INFO L158 Benchmark]: Toolchain (without parser) took 20365.98ms. Allocated memory was 90.2MB in the beginning and 490.7MB in the end (delta: 400.6MB). Free memory was 56.1MB in the beginning and 275.2MB in the end (delta: -219.1MB). Peak memory consumption was 183.2MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,033 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 73.4MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:25:45,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.66ms. Allocated memory is still 90.2MB. Free memory was 56.0MB in the beginning and 44.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.30ms. Allocated memory is still 90.2MB. Free memory was 44.6MB in the beginning and 41.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,034 INFO L158 Benchmark]: Boogie Preprocessor took 30.74ms. Allocated memory is still 90.2MB. Free memory was 41.5MB in the beginning and 39.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,034 INFO L158 Benchmark]: RCFGBuilder took 1089.93ms. Allocated memory is still 90.2MB. Free memory was 39.5MB in the beginning and 38.9MB in the end (delta: 636.1kB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,035 INFO L158 Benchmark]: TraceAbstraction took 18888.72ms. Allocated memory was 90.2MB in the beginning and 490.7MB in the end (delta: 400.6MB). Free memory was 38.4MB in the beginning and 278.3MB in the end (delta: -240.0MB). Peak memory consumption was 160.6MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,035 INFO L158 Benchmark]: Witness Printer took 51.32ms. Allocated memory is still 490.7MB. Free memory was 278.3MB in the beginning and 275.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:25:45,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 73.4MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.66ms. Allocated memory is still 90.2MB. Free memory was 56.0MB in the beginning and 44.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.30ms. Allocated memory is still 90.2MB. Free memory was 44.6MB in the beginning and 41.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.74ms. Allocated memory is still 90.2MB. Free memory was 41.5MB in the beginning and 39.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1089.93ms. Allocated memory is still 90.2MB. Free memory was 39.5MB in the beginning and 38.9MB in the end (delta: 636.1kB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18888.72ms. Allocated memory was 90.2MB in the beginning and 490.7MB in the end (delta: 400.6MB). Free memory was 38.4MB in the beginning and 278.3MB in the end (delta: -240.0MB). Peak memory consumption was 160.6MB. Max. memory is 16.1GB. * Witness Printer took 51.32ms. Allocated memory is still 490.7MB. Free memory was 278.3MB in the beginning and 275.2MB 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: 18.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 1.3s 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, 7.9s 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, 1.6s SatisfiabilityAnalysisTime, 8.4s 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! [2022-07-19 21:25:45,067 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