./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --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/weaver/popl20-more-min-le-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:53:29,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:53:29,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:53:29,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:53:29,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:53:29,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:53:29,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:53:29,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:53:29,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:53:29,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:53:29,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:53:29,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:53:29,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:53:29,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:53:29,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:53:29,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:53:29,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:53:29,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:53:29,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:53:29,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:53:30,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:53:30,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:53:30,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:53:30,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:53:30,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:53:30,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:53:30,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:53:30,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:53:30,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:53:30,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:53:30,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:53:30,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:53:30,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:53:30,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:53:30,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:53:30,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:53:30,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:53:30,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:53:30,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:53:30,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:53:30,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:53:30,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:53:30,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:53:30,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:53:30,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:53:30,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:53:30,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:53:30,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:53:30,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:53:30,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:53:30,066 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:53:30,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:53:30,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:53:30,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:53:30,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:53:30,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:53:30,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:53:30,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:53:30,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:53:30,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:53:30,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:53:30,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:53:30,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:53:30,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:53:30,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:53:30,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:53:30,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:53:30,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:53:30,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:53:30,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:53:30,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:53:30,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:53:30,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:53:30,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:53:30,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:53:30,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:53:30,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2021-12-14 16:53:30,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:53:30,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:53:30,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:53:30,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:53:30,362 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:53:30,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-12-14 16:53:30,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e74e129/00a1d039ed184bf4ba72fd332ce34794/FLAGe79148351 [2021-12-14 16:53:30,868 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:53:30,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-12-14 16:53:30,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e74e129/00a1d039ed184bf4ba72fd332ce34794/FLAGe79148351 [2021-12-14 16:53:30,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e74e129/00a1d039ed184bf4ba72fd332ce34794 [2021-12-14 16:53:30,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:53:30,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:53:30,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:53:30,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:53:30,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:53:30,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:30" (1/1) ... [2021-12-14 16:53:30,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c649f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:30, skipping insertion in model container [2021-12-14 16:53:30,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:30" (1/1) ... [2021-12-14 16:53:30,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:53:30,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:53:31,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2021-12-14 16:53:31,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:53:31,149 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:53:31,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2021-12-14 16:53:31,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:53:31,210 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:53:31,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31 WrapperNode [2021-12-14 16:53:31,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:53:31,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:53:31,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:53:31,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:53:31,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,261 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2021-12-14 16:53:31,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:53:31,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:53:31,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:53:31,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:53:31,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:53:31,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:53:31,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:53:31,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:53:31,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (1/1) ... [2021-12-14 16:53:31,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:53:31,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:31,345 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 16:53:31,362 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 16:53:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:53:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-14 16:53:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-14 16:53:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-14 16:53:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-14 16:53:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-14 16:53:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:53:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:53:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:53:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:53:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:53:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:53:31,393 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 16:53:31,493 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:53:31,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:53:31,744 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:53:31,787 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:53:31,790 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-14 16:53:31,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:31 BoogieIcfgContainer [2021-12-14 16:53:31,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:53:31,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:53:31,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:53:31,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:53:31,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:53:30" (1/3) ... [2021-12-14 16:53:31,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762394f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:31, skipping insertion in model container [2021-12-14 16:53:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:31" (2/3) ... [2021-12-14 16:53:31,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762394f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:31, skipping insertion in model container [2021-12-14 16:53:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:31" (3/3) ... [2021-12-14 16:53:31,802 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2021-12-14 16:53:31,808 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:53:31,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:53:31,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:53:31,809 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:53:31,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,876 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,877 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,877 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,877 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,877 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,878 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,878 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,879 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,879 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,880 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,880 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,880 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,881 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,881 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,882 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,883 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,884 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,885 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,885 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,886 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,887 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,887 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,888 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,888 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,889 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,889 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,891 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,892 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,895 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,897 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,898 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,899 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,899 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,901 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:31,906 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-14 16:53:31,973 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:53:31,982 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 16:53:31,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:53:32,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2021-12-14 16:53:32,097 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2021-12-14 16:53:32,097 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:53:32,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2021-12-14 16:53:32,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2021-12-14 16:53:32,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2021-12-14 16:53:32,151 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2021-12-14 16:53:32,151 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:53:32,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:32,152 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:32,152 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 16:53:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash 909462289, now seen corresponding path program 1 times [2021-12-14 16:53:32,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:32,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851349040] [2021-12-14 16:53:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:32,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:32,426 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 16:53:32,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851349040] [2021-12-14 16:53:32,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851349040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:32,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:53:32,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:53:32,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444356550] [2021-12-14 16:53:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:32,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:53:32,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:53:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:53:32,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 149 [2021-12-14 16:53:32,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 16:53:32,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:32,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 149 [2021-12-14 16:53:32,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:32,557 INFO L129 PetriNetUnfolder]: 20/193 cut-off events. [2021-12-14 16:53:32,558 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2021-12-14 16:53:32,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 193 events. 20/193 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 323 event pairs, 7 based on Foata normal form. 22/196 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2021-12-14 16:53:32,562 INFO L132 encePairwiseOnDemand]: 142/149 looper letters, 8 selfloop transitions, 0 changer transitions 4/128 dead transitions. [2021-12-14 16:53:32,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 290 flow [2021-12-14 16:53:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:53:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-14 16:53:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2021-12-14 16:53:32,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9429530201342282 [2021-12-14 16:53:32,582 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2021-12-14 16:53:32,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2021-12-14 16:53:32,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:32,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2021-12-14 16:53:32,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 16:53:32,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 16:53:32,602 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 16:53:32,604 INFO L186 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 2 states and 281 transitions. [2021-12-14 16:53:32,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 290 flow [2021-12-14 16:53:32,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-14 16:53:32,614 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 254 flow [2021-12-14 16:53:32,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2021-12-14 16:53:32,619 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2021-12-14 16:53:32,620 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 254 flow [2021-12-14 16:53:32,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 16:53:32,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:32,621 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:32,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:53:32,622 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 16:53:32,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050017, now seen corresponding path program 1 times [2021-12-14 16:53:32,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:32,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385935098] [2021-12-14 16:53:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:32,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:32,944 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 16:53:32,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385935098] [2021-12-14 16:53:32,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385935098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:32,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:53:32,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:53:32,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357151436] [2021-12-14 16:53:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:32,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:53:32,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:53:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:53:32,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2021-12-14 16:53:32,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 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 16:53:32,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:32,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2021-12-14 16:53:32,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:33,122 INFO L129 PetriNetUnfolder]: 155/542 cut-off events. [2021-12-14 16:53:33,122 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-14 16:53:33,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 542 events. 155/542 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2712 event pairs, 85 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 860. Up to 159 conditions per place. [2021-12-14 16:53:33,127 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 38 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2021-12-14 16:53:33,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 360 flow [2021-12-14 16:53:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 16:53:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-14 16:53:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2021-12-14 16:53:33,130 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404921700223713 [2021-12-14 16:53:33,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2021-12-14 16:53:33,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2021-12-14 16:53:33,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:33,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2021-12-14 16:53:33,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 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 16:53:33,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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 16:53:33,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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 16:53:33,136 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 254 flow. Second operand 6 states and 662 transitions. [2021-12-14 16:53:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 360 flow [2021-12-14 16:53:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-14 16:53:33,140 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 272 flow [2021-12-14 16:53:33,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-14 16:53:33,141 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2021-12-14 16:53:33,142 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 272 flow [2021-12-14 16:53:33,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 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 16:53:33,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:33,143 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:33,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:53:33,143 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 16:53:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash 464005187, now seen corresponding path program 1 times [2021-12-14 16:53:33,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:33,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446308271] [2021-12-14 16:53:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:33,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:53:33,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446308271] [2021-12-14 16:53:33,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446308271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:33,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:53:33,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:53:33,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172773906] [2021-12-14 16:53:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:33,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:53:33,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:53:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:53:33,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2021-12-14 16:53:33,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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 16:53:33,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:33,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2021-12-14 16:53:33,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:33,429 INFO L129 PetriNetUnfolder]: 175/543 cut-off events. [2021-12-14 16:53:33,429 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2021-12-14 16:53:33,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 543 events. 175/543 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2405 event pairs, 108 based on Foata normal form. 9/476 useless extension candidates. Maximal degree in co-relation 972. Up to 261 conditions per place. [2021-12-14 16:53:33,433 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2021-12-14 16:53:33,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 416 flow [2021-12-14 16:53:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:53:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-14 16:53:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2021-12-14 16:53:33,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7860738255033557 [2021-12-14 16:53:33,437 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2021-12-14 16:53:33,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2021-12-14 16:53:33,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:33,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2021-12-14 16:53:33,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 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 16:53:33,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 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 16:53:33,442 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 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 16:53:33,443 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 272 flow. Second operand 8 states and 937 transitions. [2021-12-14 16:53:33,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 416 flow [2021-12-14 16:53:33,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 405 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-14 16:53:33,447 INFO L242 Difference]: Finished difference. Result has 138 places, 126 transitions, 288 flow [2021-12-14 16:53:33,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2021-12-14 16:53:33,448 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2021-12-14 16:53:33,448 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 288 flow [2021-12-14 16:53:33,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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 16:53:33,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:33,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:33,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:53:33,450 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 16:53:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1074626539, now seen corresponding path program 1 times [2021-12-14 16:53:33,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:33,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655743880] [2021-12-14 16:53:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:33,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:33,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655743880] [2021-12-14 16:53:33,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655743880] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754777604] [2021-12-14 16:53:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:33,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:33,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:53:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 16:53:33,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:34,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:34,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754777604] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:34,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:53:34,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-14 16:53:34,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325535489] [2021-12-14 16:53:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:53:34,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:53:34,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-14 16:53:34,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2021-12-14 16:53:34,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 16:53:34,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:34,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2021-12-14 16:53:34,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:34,491 INFO L129 PetriNetUnfolder]: 129/490 cut-off events. [2021-12-14 16:53:34,491 INFO L130 PetriNetUnfolder]: For 62/76 co-relation queries the response was YES. [2021-12-14 16:53:34,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 490 events. 129/490 cut-off events. For 62/76 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2444 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 844. Up to 133 conditions per place. [2021-12-14 16:53:34,496 INFO L132 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2021-12-14 16:53:34,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 384 flow [2021-12-14 16:53:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:53:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:53:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2021-12-14 16:53:34,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2021-12-14 16:53:34,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2021-12-14 16:53:34,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2021-12-14 16:53:34,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:34,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2021-12-14 16:53:34,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 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 16:53:34,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 16:53:34,505 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 16:53:34,505 INFO L186 Difference]: Start difference. First operand has 138 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2021-12-14 16:53:34,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 384 flow [2021-12-14 16:53:34,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-14 16:53:34,511 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 307 flow [2021-12-14 16:53:34,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2021-12-14 16:53:34,513 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 4 predicate places. [2021-12-14 16:53:34,513 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 307 flow [2021-12-14 16:53:34,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 16:53:34,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:34,514 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:34,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:34,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:34,736 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 16:53:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash -856593035, now seen corresponding path program 1 times [2021-12-14 16:53:34,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614714938] [2021-12-14 16:53:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:34,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:34,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614714938] [2021-12-14 16:53:34,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614714938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268536064] [2021-12-14 16:53:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:34,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:34,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:34,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:53:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:35,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-14 16:53:35,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:35,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 16:53:35,301 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 16:53:35,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-14 16:53:35,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 16:53:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 16:53:35,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-14 16:53:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 16:53:35,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-14 16:53:36,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-14 16:53:36,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 16:53:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:53:36,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:36,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268536064] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:53:36,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:53:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 9] total 33 [2021-12-14 16:53:36,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46894527] [2021-12-14 16:53:36,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:53:36,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-14 16:53:36,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:36,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-14 16:53:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2021-12-14 16:53:36,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 149 [2021-12-14 16:53:36,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 307 flow. Second operand has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 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 16:53:36,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:36,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 149 [2021-12-14 16:53:36,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:39,947 INFO L129 PetriNetUnfolder]: 2340/4572 cut-off events. [2021-12-14 16:53:39,947 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2021-12-14 16:53:39,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 4572 events. 2340/4572 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32561 event pairs, 149 based on Foata normal form. 4/4535 useless extension candidates. Maximal degree in co-relation 10010. Up to 469 conditions per place. [2021-12-14 16:53:39,961 INFO L132 encePairwiseOnDemand]: 121/149 looper letters, 0 selfloop transitions, 0 changer transitions 345/345 dead transitions. [2021-12-14 16:53:39,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 1545 flow [2021-12-14 16:53:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-14 16:53:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-12-14 16:53:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2611 transitions. [2021-12-14 16:53:39,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4172259507829978 [2021-12-14 16:53:39,969 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2611 transitions. [2021-12-14 16:53:39,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2611 transitions. [2021-12-14 16:53:39,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:39,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2611 transitions. [2021-12-14 16:53:39,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.166666666666664) internal successors, (2611), 42 states have internal predecessors, (2611), 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 16:53:39,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 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 16:53:39,987 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 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 16:53:39,987 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 307 flow. Second operand 42 states and 2611 transitions. [2021-12-14 16:53:39,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 1545 flow [2021-12-14 16:53:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 345 transitions, 1514 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-14 16:53:39,995 INFO L242 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2021-12-14 16:53:39,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2021-12-14 16:53:39,996 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 38 predicate places. [2021-12-14 16:53:39,997 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2021-12-14 16:53:39,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 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 16:53:40,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-14 16:53:40,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-14 16:53:40,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-14 16:53:40,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-14 16:53:40,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:40,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:40,222 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-14 16:53:40,224 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-14 16:53:40,225 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:53:40,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:53:40 BasicIcfg [2021-12-14 16:53:40,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:53:40,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:53:40,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:53:40,229 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:53:40,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:31" (3/4) ... [2021-12-14 16:53:40,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 16:53:40,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-14 16:53:40,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-14 16:53:40,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-14 16:53:40,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-12-14 16:53:40,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-14 16:53:40,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 16:53:40,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 16:53:40,284 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 16:53:40,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:53:40,287 INFO L158 Benchmark]: Toolchain (without parser) took 9389.31ms. Allocated memory was 121.6MB in the beginning and 188.7MB in the end (delta: 67.1MB). Free memory was 85.6MB in the beginning and 65.3MB in the end (delta: 20.3MB). Peak memory consumption was 86.4MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,287 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 93.5MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:53:40,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.76ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 94.7MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.46ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,288 INFO L158 Benchmark]: Boogie Preprocessor took 49.37ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 91.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:53:40,289 INFO L158 Benchmark]: RCFGBuilder took 481.60ms. Allocated memory is still 121.6MB. Free memory was 91.7MB in the beginning and 75.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,289 INFO L158 Benchmark]: TraceAbstraction took 8432.96ms. Allocated memory was 121.6MB in the beginning and 188.7MB in the end (delta: 67.1MB). Free memory was 74.3MB in the beginning and 69.2MB in the end (delta: 5.2MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,289 INFO L158 Benchmark]: Witness Printer took 57.65ms. Allocated memory is still 188.7MB. Free memory was 69.2MB in the beginning and 65.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:53:40,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory was 93.5MB in the beginning and 93.5MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.76ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 94.7MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.46ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.37ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 91.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 481.60ms. Allocated memory is still 121.6MB. Free memory was 91.7MB in the beginning and 75.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8432.96ms. Allocated memory was 121.6MB in the beginning and 188.7MB in the end (delta: 67.1MB). Free memory was 74.3MB in the beginning and 69.2MB in the end (delta: 5.2MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. * Witness Printer took 57.65ms. Allocated memory is still 188.7MB. Free memory was 69.2MB in the beginning and 65.3MB in the end (delta: 3.8MB). 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: 98]: 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, 165 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: 8.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1320 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1320 mSDsluCounter, 859 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 986 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 98 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=4, InterpolantAutomatonStates: 65, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1046 ConstructedInterpolants, 0 QuantifiedInterpolants, 3849 SizeOfPredicates, 32 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/16 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 16:53:40,317 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