./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe013_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/safe013_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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:37:32,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:37:32,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:37:33,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:37:33,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:37:33,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:37:33,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:37:33,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:37:33,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:37:33,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:37:33,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:37:33,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:37:33,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:37:33,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:37:33,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:37:33,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:37:33,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:37:33,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:37:33,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:37:33,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:37:33,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:37:33,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:37:33,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:37:33,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:37:33,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:37:33,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:37:33,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:37:33,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:37:33,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:37:33,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:37:33,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:37:33,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:37:33,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:37:33,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:37:33,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:37:33,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:37:33,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:37:33,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:37:33,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:37:33,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:37:33,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:37:33,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:37:33,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:37:33,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:37:33,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:37:33,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:37:33,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:37:33,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:37:33,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:37:33,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:37:33,092 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:37:33,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:37:33,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:37:33,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:37:33,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:37:33,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:37:33,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:37:33,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:37:33,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:37:33,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:37:33,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:37:33,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:37:33,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:37:33,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:37:33,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:37:33,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2021-12-14 16:37:33,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:37:33,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:37:33,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:37:33,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:37:33,345 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:37:33,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2021-12-14 16:37:33,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8205c7f/242777009425451f89a26964d278601e/FLAG1f3143f7b [2021-12-14 16:37:33,825 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:37:33,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2021-12-14 16:37:33,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8205c7f/242777009425451f89a26964d278601e/FLAG1f3143f7b [2021-12-14 16:37:33,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8205c7f/242777009425451f89a26964d278601e [2021-12-14 16:37:33,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:37:33,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:37:33,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:37:33,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:37:33,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:37:33,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:37:33" (1/1) ... [2021-12-14 16:37:33,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d04a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:33, skipping insertion in model container [2021-12-14 16:37:33,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:37:33" (1/1) ... [2021-12-14 16:37:33,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:37:33,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:37:34,055 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/safe013_tso.i[945,958] [2021-12-14 16:37:34,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:37:34,190 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:37:34,202 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/safe013_tso.i[945,958] [2021-12-14 16:37:34,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:37:34,266 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:37:34,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34 WrapperNode [2021-12-14 16:37:34,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:37:34,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:37:34,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:37:34,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:37:34,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,315 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-14 16:37:34,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:37:34,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:37:34,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:37:34,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:37:34,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:37:34,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:37:34,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:37:34,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:37:34,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (1/1) ... [2021-12-14 16:37:34,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:37:34,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:37:34,358 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) [2021-12-14 16:37:34,364 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 [2021-12-14 16:37:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-14 16:37:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-14 16:37:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-14 16:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-14 16:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-14 16:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-14 16:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:37:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:37:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:37:34,389 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:37:34,471 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:37:34,473 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:37:34,579 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:37:34,583 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:37:34,584 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 16:37:34,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:34 BoogieIcfgContainer [2021-12-14 16:37:34,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:37:34,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:37:34,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:37:34,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:37:34,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:37:33" (1/3) ... [2021-12-14 16:37:34,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45762597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:37:34, skipping insertion in model container [2021-12-14 16:37:34,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:37:34" (2/3) ... [2021-12-14 16:37:34,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45762597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:37:34, skipping insertion in model container [2021-12-14 16:37:34,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:34" (3/3) ... [2021-12-14 16:37:34,591 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2021-12-14 16:37:34,594 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:37:34,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:37:34,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:37:34,595 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:37:34,623 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,623 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,623 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,623 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,625 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,625 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,626 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,626 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,626 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,626 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,627 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,628 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,628 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,628 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,628 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,629 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,630 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,631 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,631 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,631 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,631 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,635 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,635 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,639 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,639 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,639 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,639 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:37:34,640 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-14 16:37:34,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:37:34,676 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 [2021-12-14 16:37:34,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:37:34,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-14 16:37:34,719 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-14 16:37:34,719 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:37:34,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-14 16:37:34,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-14 16:37:34,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-14 16:37:34,744 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-14 16:37:34,744 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-14 16:37:34,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:34,745 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] [2021-12-14 16:37:34,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1214845436, now seen corresponding path program 1 times [2021-12-14 16:37:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900590897] [2021-12-14 16:37:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:34,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:35,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900590897] [2021-12-14 16:37:35,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900590897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:35,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:35,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:35,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448608738] [2021-12-14 16:37:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:35,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:35,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:35,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2021-12-14 16:37:35,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2021-12-14 16:37:35,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:35,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2021-12-14 16:37:35,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:35,385 INFO L129 PetriNetUnfolder]: 91/302 cut-off events. [2021-12-14 16:37:35,385 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-14 16:37:35,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 302 events. 91/302 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1194 event pairs, 6 based on Foata normal form. 14/303 useless extension candidates. Maximal degree in co-relation 480. Up to 60 conditions per place. [2021-12-14 16:37:35,397 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 5 changer transitions 35/117 dead transitions. [2021-12-14 16:37:35,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 361 flow [2021-12-14 16:37:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1001 transitions. [2021-12-14 16:37:35,421 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2021-12-14 16:37:35,421 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1001 transitions. [2021-12-14 16:37:35,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1001 transitions. [2021-12-14 16:37:35,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:35,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1001 transitions. [2021-12-14 16:37:35,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 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) [2021-12-14 16:37:35,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:35,440 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:35,442 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 1001 transitions. [2021-12-14 16:37:35,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 361 flow [2021-12-14 16:37:35,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 358 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-14 16:37:35,451 INFO L242 Difference]: Finished difference. Result has 104 places, 76 transitions, 211 flow [2021-12-14 16:37:35,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=211, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2021-12-14 16:37:35,456 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2021-12-14 16:37:35,456 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 211 flow [2021-12-14 16:37:35,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2021-12-14 16:37:35,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:35,457 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] [2021-12-14 16:37:35,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:37:35,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:35,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash 951080603, now seen corresponding path program 1 times [2021-12-14 16:37:35,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:35,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379877513] [2021-12-14 16:37:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:35,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:35,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:35,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379877513] [2021-12-14 16:37:35,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379877513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:35,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:35,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:35,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330836168] [2021-12-14 16:37:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:35,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:35,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:35,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2021-12-14 16:37:35,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2021-12-14 16:37:35,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:35,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2021-12-14 16:37:35,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:35,866 INFO L129 PetriNetUnfolder]: 55/254 cut-off events. [2021-12-14 16:37:35,866 INFO L130 PetriNetUnfolder]: For 433/490 co-relation queries the response was YES. [2021-12-14 16:37:35,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 254 events. 55/254 cut-off events. For 433/490 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1009 event pairs, 6 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 671. Up to 54 conditions per place. [2021-12-14 16:37:35,872 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 7 changer transitions 28/112 dead transitions. [2021-12-14 16:37:35,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 112 transitions, 543 flow [2021-12-14 16:37:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 993 transitions. [2021-12-14 16:37:35,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.830267558528428 [2021-12-14 16:37:35,875 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 993 transitions. [2021-12-14 16:37:35,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 993 transitions. [2021-12-14 16:37:35,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:35,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 993 transitions. [2021-12-14 16:37:35,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.38461538461539) internal successors, (993), 13 states have internal predecessors, (993), 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) [2021-12-14 16:37:35,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:35,881 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:35,881 INFO L186 Difference]: Start difference. First operand has 104 places, 76 transitions, 211 flow. Second operand 13 states and 993 transitions. [2021-12-14 16:37:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 112 transitions, 543 flow [2021-12-14 16:37:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 465 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-12-14 16:37:35,892 INFO L242 Difference]: Finished difference. Result has 109 places, 77 transitions, 231 flow [2021-12-14 16:37:35,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=231, PETRI_PLACES=109, PETRI_TRANSITIONS=77} [2021-12-14 16:37:35,893 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2021-12-14 16:37:35,893 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 77 transitions, 231 flow [2021-12-14 16:37:35,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2021-12-14 16:37:35,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:35,894 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] [2021-12-14 16:37:35,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:37:35,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -473422274, now seen corresponding path program 1 times [2021-12-14 16:37:35,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:35,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054829881] [2021-12-14 16:37:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:35,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:36,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:36,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054829881] [2021-12-14 16:37:36,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054829881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:36,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:36,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:36,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352894489] [2021-12-14 16:37:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:36,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:36,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:36,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-14 16:37:36,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 77 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2021-12-14 16:37:36,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:36,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-14 16:37:36,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:36,196 INFO L129 PetriNetUnfolder]: 31/295 cut-off events. [2021-12-14 16:37:36,196 INFO L130 PetriNetUnfolder]: For 475/528 co-relation queries the response was YES. [2021-12-14 16:37:36,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 295 events. 31/295 cut-off events. For 475/528 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 17 based on Foata normal form. 8/282 useless extension candidates. Maximal degree in co-relation 622. Up to 44 conditions per place. [2021-12-14 16:37:36,198 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 4 changer transitions 12/90 dead transitions. [2021-12-14 16:37:36,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 90 transitions, 356 flow [2021-12-14 16:37:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:37:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:37:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2021-12-14 16:37:36,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2021-12-14 16:37:36,200 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2021-12-14 16:37:36,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2021-12-14 16:37:36,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:36,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2021-12-14 16:37:36,202 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) [2021-12-14 16:37:36,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-14 16:37:36,203 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-14 16:37:36,204 INFO L186 Difference]: Start difference. First operand has 109 places, 77 transitions, 231 flow. Second operand 10 states and 778 transitions. [2021-12-14 16:37:36,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 90 transitions, 356 flow [2021-12-14 16:37:36,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 302 flow, removed 24 selfloop flow, removed 10 redundant places. [2021-12-14 16:37:36,211 INFO L242 Difference]: Finished difference. Result has 107 places, 77 transitions, 231 flow [2021-12-14 16:37:36,211 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2021-12-14 16:37:36,213 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2021-12-14 16:37:36,213 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 231 flow [2021-12-14 16:37:36,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2021-12-14 16:37:36,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:36,215 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] [2021-12-14 16:37:36,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:37:36,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -49397549, now seen corresponding path program 1 times [2021-12-14 16:37:36,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:36,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406958956] [2021-12-14 16:37:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:36,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:36,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:36,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406958956] [2021-12-14 16:37:36,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406958956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:36,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:36,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:37:36,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586317398] [2021-12-14 16:37:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:36,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:37:36,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:37:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:37:36,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-14 16:37:36,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-14 16:37:36,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:36,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-14 16:37:36,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:36,493 INFO L129 PetriNetUnfolder]: 278/773 cut-off events. [2021-12-14 16:37:36,507 INFO L130 PetriNetUnfolder]: For 389/399 co-relation queries the response was YES. [2021-12-14 16:37:36,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 773 events. 278/773 cut-off events. For 389/399 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4964 event pairs, 12 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1528. Up to 193 conditions per place. [2021-12-14 16:37:36,513 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 15 changer transitions 5/109 dead transitions. [2021-12-14 16:37:36,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 391 flow [2021-12-14 16:37:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:37:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-14 16:37:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2021-12-14 16:37:36,515 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2021-12-14 16:37:36,515 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2021-12-14 16:37:36,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2021-12-14 16:37:36,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:36,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2021-12-14 16:37:36,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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) [2021-12-14 16:37:36,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-14 16:37:36,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-14 16:37:36,531 INFO L186 Difference]: Start difference. First operand has 107 places, 77 transitions, 231 flow. Second operand 10 states and 798 transitions. [2021-12-14 16:37:36,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 391 flow [2021-12-14 16:37:36,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 365 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-12-14 16:37:36,538 INFO L242 Difference]: Finished difference. Result has 106 places, 90 transitions, 314 flow [2021-12-14 16:37:36,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2021-12-14 16:37:36,539 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2021-12-14 16:37:36,539 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 314 flow [2021-12-14 16:37:36,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-12-14 16:37:36,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:36,541 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] [2021-12-14 16:37:36,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:37:36,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash 325752138, now seen corresponding path program 1 times [2021-12-14 16:37:36,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057118864] [2021-12-14 16:37:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:36,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:36,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057118864] [2021-12-14 16:37:36,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057118864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:36,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:36,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378834424] [2021-12-14 16:37:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:36,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:36,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-14 16:37:36,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2021-12-14 16:37:36,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:36,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-14 16:37:36,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:36,949 INFO L129 PetriNetUnfolder]: 256/744 cut-off events. [2021-12-14 16:37:36,949 INFO L130 PetriNetUnfolder]: For 1530/1681 co-relation queries the response was YES. [2021-12-14 16:37:36,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 744 events. 256/744 cut-off events. For 1530/1681 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4881 event pairs, 0 based on Foata normal form. 52/758 useless extension candidates. Maximal degree in co-relation 2350. Up to 277 conditions per place. [2021-12-14 16:37:36,955 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 28 changer transitions 11/128 dead transitions. [2021-12-14 16:37:36,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 128 transitions, 680 flow [2021-12-14 16:37:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:37:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:37:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2021-12-14 16:37:36,960 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2021-12-14 16:37:36,960 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2021-12-14 16:37:36,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2021-12-14 16:37:36,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:36,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2021-12-14 16:37:36,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 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) [2021-12-14 16:37:36,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:36,965 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-14 16:37:36,965 INFO L186 Difference]: Start difference. First operand has 106 places, 90 transitions, 314 flow. Second operand 13 states and 1036 transitions. [2021-12-14 16:37:36,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 128 transitions, 680 flow [2021-12-14 16:37:36,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 128 transitions, 673 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-14 16:37:36,970 INFO L242 Difference]: Finished difference. Result has 122 places, 107 transitions, 533 flow [2021-12-14 16:37:36,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=533, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2021-12-14 16:37:36,972 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2021-12-14 16:37:36,972 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 533 flow [2021-12-14 16:37:36,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2021-12-14 16:37:36,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:36,973 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:36,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:37:36,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 284251935, now seen corresponding path program 1 times [2021-12-14 16:37:36,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116735345] [2021-12-14 16:37:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:36,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:37,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116735345] [2021-12-14 16:37:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116735345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:37,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:37,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:37:37,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064971596] [2021-12-14 16:37:37,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:37:37,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:37:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:37:37,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-14 16:37:37,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 533 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-14 16:37:37,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:37,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-14 16:37:37,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:37,289 INFO L129 PetriNetUnfolder]: 176/625 cut-off events. [2021-12-14 16:37:37,289 INFO L130 PetriNetUnfolder]: For 2725/2998 co-relation queries the response was YES. [2021-12-14 16:37:37,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 625 events. 176/625 cut-off events. For 2725/2998 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4433 event pairs, 0 based on Foata normal form. 67/661 useless extension candidates. Maximal degree in co-relation 2469. Up to 201 conditions per place. [2021-12-14 16:37:37,293 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 32 changer transitions 21/136 dead transitions. [2021-12-14 16:37:37,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 136 transitions, 873 flow [2021-12-14 16:37:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 16:37:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-14 16:37:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2021-12-14 16:37:37,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2021-12-14 16:37:37,296 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2021-12-14 16:37:37,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2021-12-14 16:37:37,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:37,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2021-12-14 16:37:37,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 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) [2021-12-14 16:37:37,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2021-12-14 16:37:37,301 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2021-12-14 16:37:37,302 INFO L186 Difference]: Start difference. First operand has 122 places, 107 transitions, 533 flow. Second operand 16 states and 1258 transitions. [2021-12-14 16:37:37,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 136 transitions, 873 flow [2021-12-14 16:37:37,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 789 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-12-14 16:37:37,312 INFO L242 Difference]: Finished difference. Result has 136 places, 108 transitions, 563 flow [2021-12-14 16:37:37,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=563, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2021-12-14 16:37:37,313 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2021-12-14 16:37:37,313 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 563 flow [2021-12-14 16:37:37,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-14 16:37:37,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:37:37,313 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:37,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:37:37,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:37:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:37:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -334313986, now seen corresponding path program 1 times [2021-12-14 16:37:37,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:37:37,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7186859] [2021-12-14 16:37:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:37:37,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:37:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:37:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:37:37,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:37:37,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7186859] [2021-12-14 16:37:37,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7186859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:37:37,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:37:37,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:37:37,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436999795] [2021-12-14 16:37:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:37:37,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:37:37,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:37:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:37:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:37:37,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-14 16:37:37,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2021-12-14 16:37:37,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:37:37,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-14 16:37:37,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:37:37,482 INFO L129 PetriNetUnfolder]: 124/698 cut-off events. [2021-12-14 16:37:37,482 INFO L130 PetriNetUnfolder]: For 1945/1993 co-relation queries the response was YES. [2021-12-14 16:37:37,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 698 events. 124/698 cut-off events. For 1945/1993 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5720 event pairs, 2 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 2164. Up to 95 conditions per place. [2021-12-14 16:37:37,486 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2021-12-14 16:37:37,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 109 transitions, 603 flow [2021-12-14 16:37:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:37:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:37:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2021-12-14 16:37:37,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8400621118012422 [2021-12-14 16:37:37,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2021-12-14 16:37:37,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2021-12-14 16:37:37,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:37:37,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2021-12-14 16:37:37,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 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) [2021-12-14 16:37:37,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-12-14 16:37:37,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-12-14 16:37:37,490 INFO L186 Difference]: Start difference. First operand has 136 places, 108 transitions, 563 flow. Second operand 7 states and 541 transitions. [2021-12-14 16:37:37,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 109 transitions, 603 flow [2021-12-14 16:37:37,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 109 transitions, 506 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-12-14 16:37:37,501 INFO L242 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2021-12-14 16:37:37,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2021-12-14 16:37:37,502 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2021-12-14 16:37:37,502 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2021-12-14 16:37:37,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2021-12-14 16:37:37,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-14 16:37:37,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-14 16:37:37,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-14 16:37:37,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-14 16:37:37,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:37:37,508 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:37:37,509 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-14 16:37:37,509 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:37:37,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:37:37 BasicIcfg [2021-12-14 16:37:37,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:37:37,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:37:37,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:37:37,512 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:37:37,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:37:34" (3/4) ... [2021-12-14 16:37:37,514 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 16:37:37,518 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-14 16:37:37,519 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-14 16:37:37,519 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-14 16:37:37,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-14 16:37:37,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-14 16:37:37,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 16:37:37,522 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 16:37:37,541 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 16:37:37,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:37:37,542 INFO L158 Benchmark]: Toolchain (without parser) took 3684.14ms. Allocated memory was 86.0MB in the beginning and 159.4MB in the end (delta: 73.4MB). Free memory was 47.9MB in the beginning and 106.6MB in the end (delta: -58.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,542 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:37:37,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.50ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 47.6MB in the beginning and 84.4MB in the end (delta: -36.8MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.65ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,543 INFO L158 Benchmark]: Boogie Preprocessor took 15.74ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,543 INFO L158 Benchmark]: RCFGBuilder took 252.76ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 68.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,544 INFO L158 Benchmark]: TraceAbstraction took 2924.94ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 67.6MB in the beginning and 109.7MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:37:37,544 INFO L158 Benchmark]: Witness Printer took 29.83ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 106.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:37:37,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.50ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 47.6MB in the beginning and 84.4MB in the end (delta: -36.8MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.65ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.74ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.76ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 68.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2924.94ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 67.6MB in the beginning and 109.7MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.83ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 106.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 115 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: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 276 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 276 mSDsluCounter, 315 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 325 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 75 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=6, InterpolantAutomatonStates: 82, 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, 0.8s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 421 ConstructedInterpolants, 0 QuantifiedInterpolants, 1507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2021-12-14 16:37:37,573 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