./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe030_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:52:08,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:52:08,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:52:08,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:52:08,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:52:08,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:52:08,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:52:08,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:52:08,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:52:08,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:52:08,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:52:08,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:52:08,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:52:08,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:52:08,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:52:08,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:52:08,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:52:08,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:52:08,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:52:08,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:52:08,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:52:08,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:52:08,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:52:08,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:52:08,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:52:08,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:52:08,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:52:08,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:52:08,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:52:08,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:52:08,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:52:08,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:52:08,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:52:08,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:52:08,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:52:08,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:52:08,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:52:08,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:52:08,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:52:08,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:52:08,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:52:08,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:52:08,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:52:08,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:52:08,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:52:08,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:52:08,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:52:08,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:52:08,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:52:08,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:52:08,998 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:52:08,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:52:08,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:52:09,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:52:09,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:52:09,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:52:09,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:52:09,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:52:09,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:52:09,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:52:09,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:52:09,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:52:09,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:52:09,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:52:09,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:52:09,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 [2021-12-16 02:52:09,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:52:09,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:52:09,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:52:09,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:52:09,268 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:52:09,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe030_tso.i [2021-12-16 02:52:09,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0049cfb0/6c572a35189b4108ba6c8434a43c8808/FLAG0062b7aa3 [2021-12-16 02:52:09,687 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:52:09,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.i [2021-12-16 02:52:09,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0049cfb0/6c572a35189b4108ba6c8434a43c8808/FLAG0062b7aa3 [2021-12-16 02:52:10,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0049cfb0/6c572a35189b4108ba6c8434a43c8808 [2021-12-16 02:52:10,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:52:10,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:52:10,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:52:10,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:52:10,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:52:10,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6769b268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10, skipping insertion in model container [2021-12-16 02:52:10,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:52:10,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:52:10,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2021-12-16 02:52:10,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:52:10,440 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:52:10,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_tso.i[945,958] [2021-12-16 02:52:10,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:52:10,513 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:52:10,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10 WrapperNode [2021-12-16 02:52:10,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:52:10,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:52:10,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:52:10,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:52:10,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,565 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2021-12-16 02:52:10,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:52:10,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:52:10,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:52:10,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:52:10,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:52:10,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:52:10,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:52:10,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:52:10,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (1/1) ... [2021-12-16 02:52:10,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:52:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:52:10,637 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) [2021-12-16 02:52:10,643 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 [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-16 02:52:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-16 02:52:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-16 02:52:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-16 02:52:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-16 02:52:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:52:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:52:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:52:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:52:10,682 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:52:10,852 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:52:10,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:52:10,994 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:52:10,999 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:52:10,999 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:52:11,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:52:11 BoogieIcfgContainer [2021-12-16 02:52:11,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:52:11,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:52:11,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:52:11,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:52:11,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:52:10" (1/3) ... [2021-12-16 02:52:11,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f27a6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:52:11, skipping insertion in model container [2021-12-16 02:52:11,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:10" (2/3) ... [2021-12-16 02:52:11,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f27a6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:52:11, skipping insertion in model container [2021-12-16 02:52:11,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:52:11" (3/3) ... [2021-12-16 02:52:11,009 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2021-12-16 02:52:11,014 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:52:11,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:52:11,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:52:11,014 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:52:11,037 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,037 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,037 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,038 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,038 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,038 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,038 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,038 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,039 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,039 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,039 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,039 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,039 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,040 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,041 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,041 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,041 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,041 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,042 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,043 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,043 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,043 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,043 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,043 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,046 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,046 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,046 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,046 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,049 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,049 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,050 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,050 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,050 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,050 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,051 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,051 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:11,051 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:52:11,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:52:11,102 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 [2021-12-16 02:52:11,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 02:52:11,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2021-12-16 02:52:11,164 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-12-16 02:52:11,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:52:11,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-16 02:52:11,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2021-12-16 02:52:11,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2021-12-16 02:52:11,186 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-12-16 02:52:11,186 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:52:11,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:11,187 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] [2021-12-16 02:52:11,188 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1792320384, now seen corresponding path program 1 times [2021-12-16 02:52:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:11,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783888498] [2021-12-16 02:52:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:11,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:11,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:11,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783888498] [2021-12-16 02:52:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783888498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:11,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:11,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:11,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699698706] [2021-12-16 02:52:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:11,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:11,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:11,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-12-16 02:52:11,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2021-12-16 02:52:11,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:11,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-12-16 02:52:11,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:11,933 INFO L129 PetriNetUnfolder]: 675/1552 cut-off events. [2021-12-16 02:52:11,934 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-16 02:52:11,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1552 events. 675/1552 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10186 event pairs, 108 based on Foata normal form. 45/1553 useless extension candidates. Maximal degree in co-relation 2630. Up to 349 conditions per place. [2021-12-16 02:52:11,951 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 23 selfloop transitions, 7 changer transitions 43/127 dead transitions. [2021-12-16 02:52:11,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 127 transitions, 415 flow [2021-12-16 02:52:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:52:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:52:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 689 transitions. [2021-12-16 02:52:11,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8506172839506173 [2021-12-16 02:52:11,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 689 transitions. [2021-12-16 02:52:11,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 689 transitions. [2021-12-16 02:52:11,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:11,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 689 transitions. [2021-12-16 02:52:11,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.55555555555556) internal successors, (689), 9 states have internal predecessors, (689), 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) [2021-12-16 02:52:11,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:11,985 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:11,987 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 9 states and 689 transitions. [2021-12-16 02:52:11,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 127 transitions, 415 flow [2021-12-16 02:52:11,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 127 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 02:52:11,994 INFO L242 Difference]: Finished difference. Result has 95 places, 78 transitions, 252 flow [2021-12-16 02:52:11,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2021-12-16 02:52:11,998 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2021-12-16 02:52:11,999 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 252 flow [2021-12-16 02:52:11,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2021-12-16 02:52:11,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:12,000 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] [2021-12-16 02:52:12,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:52:12,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash 709710401, now seen corresponding path program 1 times [2021-12-16 02:52:12,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:12,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626605549] [2021-12-16 02:52:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:12,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:12,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626605549] [2021-12-16 02:52:12,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626605549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:12,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:12,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:52:12,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828835847] [2021-12-16 02:52:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:12,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:52:12,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:52:12,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:52:12,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-12-16 02:52:12,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-12-16 02:52:12,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:12,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-12-16 02:52:12,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:12,442 INFO L129 PetriNetUnfolder]: 525/1128 cut-off events. [2021-12-16 02:52:12,443 INFO L130 PetriNetUnfolder]: For 2684/3406 co-relation queries the response was YES. [2021-12-16 02:52:12,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 1128 events. 525/1128 cut-off events. For 2684/3406 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6338 event pairs, 12 based on Foata normal form. 35/1132 useless extension candidates. Maximal degree in co-relation 4043. Up to 383 conditions per place. [2021-12-16 02:52:12,451 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 29 selfloop transitions, 11 changer transitions 70/164 dead transitions. [2021-12-16 02:52:12,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 1100 flow [2021-12-16 02:52:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:52:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:52:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 984 transitions. [2021-12-16 02:52:12,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.841025641025641 [2021-12-16 02:52:12,453 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 984 transitions. [2021-12-16 02:52:12,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 984 transitions. [2021-12-16 02:52:12,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:12,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 984 transitions. [2021-12-16 02:52:12,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.6923076923077) internal successors, (984), 13 states have internal predecessors, (984), 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) [2021-12-16 02:52:12,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:12,460 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:12,460 INFO L186 Difference]: Start difference. First operand has 95 places, 78 transitions, 252 flow. Second operand 13 states and 984 transitions. [2021-12-16 02:52:12,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 1100 flow [2021-12-16 02:52:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 164 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 02:52:12,473 INFO L242 Difference]: Finished difference. Result has 111 places, 85 transitions, 382 flow [2021-12-16 02:52:12,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=382, PETRI_PLACES=111, PETRI_TRANSITIONS=85} [2021-12-16 02:52:12,474 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 29 predicate places. [2021-12-16 02:52:12,474 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 85 transitions, 382 flow [2021-12-16 02:52:12,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-12-16 02:52:12,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:12,475 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] [2021-12-16 02:52:12,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:52:12,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash -790025023, now seen corresponding path program 1 times [2021-12-16 02:52:12,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:12,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732788240] [2021-12-16 02:52:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:12,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:12,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732788240] [2021-12-16 02:52:12,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732788240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:12,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:12,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:52:12,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531576678] [2021-12-16 02:52:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:12,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:52:12,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:52:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:52:12,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-12-16 02:52:12,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 85 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-12-16 02:52:12,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:12,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-12-16 02:52:12,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:12,794 INFO L129 PetriNetUnfolder]: 394/1101 cut-off events. [2021-12-16 02:52:12,794 INFO L130 PetriNetUnfolder]: For 5054/5467 co-relation queries the response was YES. [2021-12-16 02:52:12,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 1101 events. 394/1101 cut-off events. For 5054/5467 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7245 event pairs, 32 based on Foata normal form. 37/1113 useless extension candidates. Maximal degree in co-relation 4214. Up to 321 conditions per place. [2021-12-16 02:52:12,803 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 32 selfloop transitions, 18 changer transitions 58/162 dead transitions. [2021-12-16 02:52:12,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 162 transitions, 1294 flow [2021-12-16 02:52:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:52:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:52:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2021-12-16 02:52:12,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316239316239317 [2021-12-16 02:52:12,805 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2021-12-16 02:52:12,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2021-12-16 02:52:12,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:12,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2021-12-16 02:52:12,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 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) [2021-12-16 02:52:12,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:12,809 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:12,810 INFO L186 Difference]: Start difference. First operand has 111 places, 85 transitions, 382 flow. Second operand 13 states and 973 transitions. [2021-12-16 02:52:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 162 transitions, 1294 flow [2021-12-16 02:52:12,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 162 transitions, 1240 flow, removed 27 selfloop flow, removed 0 redundant places. [2021-12-16 02:52:12,820 INFO L242 Difference]: Finished difference. Result has 126 places, 94 transitions, 574 flow [2021-12-16 02:52:12,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=574, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2021-12-16 02:52:12,821 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2021-12-16 02:52:12,821 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 574 flow [2021-12-16 02:52:12,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-12-16 02:52:12,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:12,822 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] [2021-12-16 02:52:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:52:12,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1298734360, now seen corresponding path program 1 times [2021-12-16 02:52:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280410073] [2021-12-16 02:52:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:12,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:12,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:12,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280410073] [2021-12-16 02:52:12,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280410073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:12,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:12,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:12,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033350604] [2021-12-16 02:52:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:12,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:12,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:12,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2021-12-16 02:52:12,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-12-16 02:52:12,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:12,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2021-12-16 02:52:12,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:13,042 INFO L129 PetriNetUnfolder]: 201/623 cut-off events. [2021-12-16 02:52:13,042 INFO L130 PetriNetUnfolder]: For 5508/6103 co-relation queries the response was YES. [2021-12-16 02:52:13,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 623 events. 201/623 cut-off events. For 5508/6103 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3564 event pairs, 29 based on Foata normal form. 66/657 useless extension candidates. Maximal degree in co-relation 2834. Up to 194 conditions per place. [2021-12-16 02:52:13,048 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 16 selfloop transitions, 7 changer transitions 28/128 dead transitions. [2021-12-16 02:52:13,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 128 transitions, 1042 flow [2021-12-16 02:52:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:52:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:52:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 702 transitions. [2021-12-16 02:52:13,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-12-16 02:52:13,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 702 transitions. [2021-12-16 02:52:13,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 702 transitions. [2021-12-16 02:52:13,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:13,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 702 transitions. [2021-12-16 02:52:13,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 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) [2021-12-16 02:52:13,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,054 INFO L186 Difference]: Start difference. First operand has 126 places, 94 transitions, 574 flow. Second operand 9 states and 702 transitions. [2021-12-16 02:52:13,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 128 transitions, 1042 flow [2021-12-16 02:52:13,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 128 transitions, 978 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-12-16 02:52:13,065 INFO L242 Difference]: Finished difference. Result has 126 places, 99 transitions, 655 flow [2021-12-16 02:52:13,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=126, PETRI_TRANSITIONS=99} [2021-12-16 02:52:13,066 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2021-12-16 02:52:13,066 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 99 transitions, 655 flow [2021-12-16 02:52:13,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-12-16 02:52:13,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:13,067 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] [2021-12-16 02:52:13,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:52:13,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash -777393522, now seen corresponding path program 1 times [2021-12-16 02:52:13,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:13,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529911287] [2021-12-16 02:52:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:13,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:13,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:13,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529911287] [2021-12-16 02:52:13,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529911287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:13,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:13,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:13,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972472124] [2021-12-16 02:52:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:13,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:13,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:13,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2021-12-16 02:52:13,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 99 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2021-12-16 02:52:13,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:13,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2021-12-16 02:52:13,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:13,283 INFO L129 PetriNetUnfolder]: 170/650 cut-off events. [2021-12-16 02:52:13,283 INFO L130 PetriNetUnfolder]: For 6534/6947 co-relation queries the response was YES. [2021-12-16 02:52:13,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3114 conditions, 650 events. 170/650 cut-off events. For 6534/6947 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3974 event pairs, 32 based on Foata normal form. 32/659 useless extension candidates. Maximal degree in co-relation 3043. Up to 182 conditions per place. [2021-12-16 02:52:13,289 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 19 selfloop transitions, 6 changer transitions 14/118 dead transitions. [2021-12-16 02:52:13,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 118 transitions, 943 flow [2021-12-16 02:52:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:52:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:52:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2021-12-16 02:52:13,291 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8604938271604938 [2021-12-16 02:52:13,292 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2021-12-16 02:52:13,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2021-12-16 02:52:13,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:13,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2021-12-16 02:52:13,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 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) [2021-12-16 02:52:13,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,296 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,296 INFO L186 Difference]: Start difference. First operand has 126 places, 99 transitions, 655 flow. Second operand 9 states and 697 transitions. [2021-12-16 02:52:13,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 118 transitions, 943 flow [2021-12-16 02:52:13,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 884 flow, removed 26 selfloop flow, removed 10 redundant places. [2021-12-16 02:52:13,308 INFO L242 Difference]: Finished difference. Result has 125 places, 98 transitions, 642 flow [2021-12-16 02:52:13,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=125, PETRI_TRANSITIONS=98} [2021-12-16 02:52:13,310 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 43 predicate places. [2021-12-16 02:52:13,310 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 98 transitions, 642 flow [2021-12-16 02:52:13,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2021-12-16 02:52:13,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:13,311 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] [2021-12-16 02:52:13,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:52:13,312 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1370214732, now seen corresponding path program 1 times [2021-12-16 02:52:13,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:13,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807411240] [2021-12-16 02:52:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:13,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:13,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:13,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807411240] [2021-12-16 02:52:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807411240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:13,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:13,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:52:13,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209841287] [2021-12-16 02:52:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:13,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:52:13,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:52:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:52:13,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-12-16 02:52:13,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 98 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-12-16 02:52:13,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:13,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-12-16 02:52:13,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:13,633 INFO L129 PetriNetUnfolder]: 222/828 cut-off events. [2021-12-16 02:52:13,633 INFO L130 PetriNetUnfolder]: For 9261/10312 co-relation queries the response was YES. [2021-12-16 02:52:13,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 828 events. 222/828 cut-off events. For 9261/10312 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5516 event pairs, 11 based on Foata normal form. 18/824 useless extension candidates. Maximal degree in co-relation 4091. Up to 239 conditions per place. [2021-12-16 02:52:13,641 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 35 selfloop transitions, 22 changer transitions 43/154 dead transitions. [2021-12-16 02:52:13,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 154 transitions, 1656 flow [2021-12-16 02:52:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:52:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:52:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 957 transitions. [2021-12-16 02:52:13,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8179487179487179 [2021-12-16 02:52:13,644 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 957 transitions. [2021-12-16 02:52:13,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 957 transitions. [2021-12-16 02:52:13,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:13,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 957 transitions. [2021-12-16 02:52:13,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.61538461538461) internal successors, (957), 13 states have internal predecessors, (957), 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) [2021-12-16 02:52:13,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:13,648 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:13,648 INFO L186 Difference]: Start difference. First operand has 125 places, 98 transitions, 642 flow. Second operand 13 states and 957 transitions. [2021-12-16 02:52:13,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 154 transitions, 1656 flow [2021-12-16 02:52:13,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 154 transitions, 1532 flow, removed 52 selfloop flow, removed 8 redundant places. [2021-12-16 02:52:13,661 INFO L242 Difference]: Finished difference. Result has 135 places, 98 transitions, 734 flow [2021-12-16 02:52:13,662 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=734, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2021-12-16 02:52:13,664 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 53 predicate places. [2021-12-16 02:52:13,664 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 734 flow [2021-12-16 02:52:13,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-12-16 02:52:13,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:13,665 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] [2021-12-16 02:52:13,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:52:13,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1028807400, now seen corresponding path program 1 times [2021-12-16 02:52:13,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:13,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143802129] [2021-12-16 02:52:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:13,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:13,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:13,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143802129] [2021-12-16 02:52:13,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143802129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:13,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:13,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:13,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443035796] [2021-12-16 02:52:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:13,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:13,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:13,761 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2021-12-16 02:52:13,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 734 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2021-12-16 02:52:13,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:13,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2021-12-16 02:52:13,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:13,918 INFO L129 PetriNetUnfolder]: 154/796 cut-off events. [2021-12-16 02:52:13,918 INFO L130 PetriNetUnfolder]: For 9854/11061 co-relation queries the response was YES. [2021-12-16 02:52:13,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 796 events. 154/796 cut-off events. For 9854/11061 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5948 event pairs, 42 based on Foata normal form. 53/822 useless extension candidates. Maximal degree in co-relation 3812. Up to 200 conditions per place. [2021-12-16 02:52:13,925 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 17 selfloop transitions, 7 changer transitions 16/115 dead transitions. [2021-12-16 02:52:13,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 115 transitions, 1052 flow [2021-12-16 02:52:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:52:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:52:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 695 transitions. [2021-12-16 02:52:13,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8580246913580247 [2021-12-16 02:52:13,927 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 695 transitions. [2021-12-16 02:52:13,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 695 transitions. [2021-12-16 02:52:13,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:13,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 695 transitions. [2021-12-16 02:52:13,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 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) [2021-12-16 02:52:13,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2021-12-16 02:52:13,931 INFO L186 Difference]: Start difference. First operand has 135 places, 98 transitions, 734 flow. Second operand 9 states and 695 transitions. [2021-12-16 02:52:13,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 115 transitions, 1052 flow [2021-12-16 02:52:13,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 115 transitions, 972 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-12-16 02:52:13,945 INFO L242 Difference]: Finished difference. Result has 133 places, 95 transitions, 697 flow [2021-12-16 02:52:13,945 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=697, PETRI_PLACES=133, PETRI_TRANSITIONS=95} [2021-12-16 02:52:13,946 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 51 predicate places. [2021-12-16 02:52:13,946 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 95 transitions, 697 flow [2021-12-16 02:52:13,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2021-12-16 02:52:13,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:13,947 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] [2021-12-16 02:52:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:52:13,947 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1391716221, now seen corresponding path program 1 times [2021-12-16 02:52:13,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397637723] [2021-12-16 02:52:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:13,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:14,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397637723] [2021-12-16 02:52:14,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397637723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:14,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:14,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:14,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428918530] [2021-12-16 02:52:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:14,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:14,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:14,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-16 02:52:14,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 95 transitions, 697 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2021-12-16 02:52:14,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:14,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-16 02:52:14,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:14,364 INFO L129 PetriNetUnfolder]: 1127/2749 cut-off events. [2021-12-16 02:52:14,364 INFO L130 PetriNetUnfolder]: For 5876/6382 co-relation queries the response was YES. [2021-12-16 02:52:14,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 2749 events. 1127/2749 cut-off events. For 5876/6382 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 24934 event pairs, 45 based on Foata normal form. 44/2503 useless extension candidates. Maximal degree in co-relation 6585. Up to 800 conditions per place. [2021-12-16 02:52:14,417 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2021-12-16 02:52:14,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 857 flow [2021-12-16 02:52:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:52:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:52:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2021-12-16 02:52:14,420 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2021-12-16 02:52:14,420 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2021-12-16 02:52:14,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2021-12-16 02:52:14,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:14,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2021-12-16 02:52:14,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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) [2021-12-16 02:52:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2021-12-16 02:52:14,423 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2021-12-16 02:52:14,423 INFO L186 Difference]: Start difference. First operand has 133 places, 95 transitions, 697 flow. Second operand 10 states and 778 transitions. [2021-12-16 02:52:14,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 857 flow [2021-12-16 02:52:14,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 127 transitions, 801 flow, removed 17 selfloop flow, removed 9 redundant places. [2021-12-16 02:52:14,435 INFO L242 Difference]: Finished difference. Result has 133 places, 110 transitions, 761 flow [2021-12-16 02:52:14,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=761, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2021-12-16 02:52:14,437 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 51 predicate places. [2021-12-16 02:52:14,437 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 761 flow [2021-12-16 02:52:14,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2021-12-16 02:52:14,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:14,438 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] [2021-12-16 02:52:14,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:52:14,438 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 795249954, now seen corresponding path program 1 times [2021-12-16 02:52:14,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401276693] [2021-12-16 02:52:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:14,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:14,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:14,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401276693] [2021-12-16 02:52:14,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401276693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:14,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:14,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:52:14,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288722953] [2021-12-16 02:52:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:14,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:52:14,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:52:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:52:14,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-16 02:52:14,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 761 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2021-12-16 02:52:14,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:14,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-16 02:52:14,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:14,951 INFO L129 PetriNetUnfolder]: 1055/2639 cut-off events. [2021-12-16 02:52:14,951 INFO L130 PetriNetUnfolder]: For 7923/9335 co-relation queries the response was YES. [2021-12-16 02:52:14,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9738 conditions, 2639 events. 1055/2639 cut-off events. For 7923/9335 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 25020 event pairs, 5 based on Foata normal form. 326/2765 useless extension candidates. Maximal degree in co-relation 9693. Up to 1105 conditions per place. [2021-12-16 02:52:14,966 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 13 selfloop transitions, 9 changer transitions 56/148 dead transitions. [2021-12-16 02:52:14,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 148 transitions, 1131 flow [2021-12-16 02:52:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:52:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:52:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2021-12-16 02:52:14,968 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2021-12-16 02:52:14,968 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2021-12-16 02:52:14,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2021-12-16 02:52:14,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:14,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2021-12-16 02:52:14,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 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) [2021-12-16 02:52:14,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:14,972 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2021-12-16 02:52:14,972 INFO L186 Difference]: Start difference. First operand has 133 places, 110 transitions, 761 flow. Second operand 13 states and 1012 transitions. [2021-12-16 02:52:14,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 148 transitions, 1131 flow [2021-12-16 02:52:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 1073 flow, removed 28 selfloop flow, removed 9 redundant places. [2021-12-16 02:52:14,989 INFO L242 Difference]: Finished difference. Result has 142 places, 89 transitions, 594 flow [2021-12-16 02:52:14,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=142, PETRI_TRANSITIONS=89} [2021-12-16 02:52:14,991 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 60 predicate places. [2021-12-16 02:52:14,991 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 89 transitions, 594 flow [2021-12-16 02:52:14,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2021-12-16 02:52:14,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:14,992 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] [2021-12-16 02:52:14,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:52:14,992 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:52:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 687192023, now seen corresponding path program 1 times [2021-12-16 02:52:14,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:14,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650254100] [2021-12-16 02:52:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:14,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:15,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650254100] [2021-12-16 02:52:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650254100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:15,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:15,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:52:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918149439] [2021-12-16 02:52:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:15,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:52:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:52:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:52:15,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-16 02:52:15,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 89 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2021-12-16 02:52:15,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:15,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-16 02:52:15,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:15,241 INFO L129 PetriNetUnfolder]: 73/351 cut-off events. [2021-12-16 02:52:15,242 INFO L130 PetriNetUnfolder]: For 2004/2293 co-relation queries the response was YES. [2021-12-16 02:52:15,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 351 events. 73/351 cut-off events. For 2004/2293 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1904 event pairs, 0 based on Foata normal form. 56/399 useless extension candidates. Maximal degree in co-relation 1483. Up to 109 conditions per place. [2021-12-16 02:52:15,245 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2021-12-16 02:52:15,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 98 transitions, 771 flow [2021-12-16 02:52:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:52:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:52:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 840 transitions. [2021-12-16 02:52:15,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2021-12-16 02:52:15,250 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 840 transitions. [2021-12-16 02:52:15,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 840 transitions. [2021-12-16 02:52:15,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:15,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 840 transitions. [2021-12-16 02:52:15,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.36363636363636) internal successors, (840), 11 states have internal predecessors, (840), 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) [2021-12-16 02:52:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:52:15,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:52:15,258 INFO L186 Difference]: Start difference. First operand has 142 places, 89 transitions, 594 flow. Second operand 11 states and 840 transitions. [2021-12-16 02:52:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 98 transitions, 771 flow [2021-12-16 02:52:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 98 transitions, 591 flow, removed 45 selfloop flow, removed 23 redundant places. [2021-12-16 02:52:15,263 INFO L242 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2021-12-16 02:52:15,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2021-12-16 02:52:15,264 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2021-12-16 02:52:15,265 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2021-12-16 02:52:15,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2021-12-16 02:52:15,267 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-16 02:52:15,267 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-16 02:52:15,267 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-16 02:52:15,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-16 02:52:15,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:52:15,271 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:52:15,273 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:52:15,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:52:15,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:52:15 BasicIcfg [2021-12-16 02:52:15,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:52:15,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:52:15,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:52:15,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:52:15,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:52:11" (3/4) ... [2021-12-16 02:52:15,279 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:52:15,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-16 02:52:15,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-16 02:52:15,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-16 02:52:15,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-16 02:52:15,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 02:52:15,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:52:15,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:52:15,306 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:52:15,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:52:15,307 INFO L158 Benchmark]: Toolchain (without parser) took 5223.74ms. Allocated memory was 98.6MB in the beginning and 352.3MB in the end (delta: 253.8MB). Free memory was 60.3MB in the beginning and 248.9MB in the end (delta: -188.6MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,307 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:52:15,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.29ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 63.0MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.99ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,323 INFO L158 Benchmark]: Boogie Preprocessor took 36.75ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 59.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,324 INFO L158 Benchmark]: RCFGBuilder took 397.52ms. Allocated memory is still 98.6MB. Free memory was 59.4MB in the beginning and 47.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,324 INFO L158 Benchmark]: TraceAbstraction took 4273.32ms. Allocated memory was 98.6MB in the beginning and 352.3MB in the end (delta: 253.8MB). Free memory was 47.1MB in the beginning and 251.0MB in the end (delta: -203.9MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,324 INFO L158 Benchmark]: Witness Printer took 30.21ms. Allocated memory is still 352.3MB. Free memory was 251.0MB in the beginning and 248.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 02:52:15,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.29ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 63.0MB in the end (delta: -2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.99ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.75ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 59.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.52ms. Allocated memory is still 98.6MB. Free memory was 59.4MB in the beginning and 47.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4273.32ms. Allocated memory was 98.6MB in the beginning and 352.3MB in the end (delta: 253.8MB). Free memory was 47.1MB in the beginning and 251.0MB in the end (delta: -203.9MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 30.21ms. Allocated memory is still 352.3MB. Free memory was 251.0MB in the beginning and 248.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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, 113 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: 4.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 375 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 375 mSDsluCounter, 750 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 687 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 583 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 191 mSDtfsCounter, 583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=761occurred in iteration=8, InterpolantAutomatonStates: 109, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 577 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 567 ConstructedInterpolants, 0 QuantifiedInterpolants, 2325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-12-16 02:52:15,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE