./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe008_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe008_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:51:02,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:51:02,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:51:02,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:51:02,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:51:02,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:51:02,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:51:02,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:51:02,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:51:02,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:51:02,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:51:02,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:51:02,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:51:02,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:51:02,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:51:02,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:51:02,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:51:02,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:51:02,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:51:02,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:51:02,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:51:02,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:51:02,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:51:02,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:51:02,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:51:02,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:51:02,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:51:02,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:51:02,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:51:02,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:51:02,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:51:02,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:51:02,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:51:02,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:51:02,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:51:02,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:51:02,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:51:02,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:51:02,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:51:02,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:51:02,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:51:02,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:51:02,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:51:02,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:51:02,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:51:02,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:51:02,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:51:02,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:51:02,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:51:02,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:51:02,824 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:51:02,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:51:02,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:51:02,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:51:02,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:51:02,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:51:02,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:51:02,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:51:02,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:51:02,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:02,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:51:02,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:51:02,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:51:02,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c [2021-12-16 02:51:03,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:51:03,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:51:03,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:51:03,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:51:03,040 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:51:03,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe008_tso.i [2021-12-16 02:51:03,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35c4dc54/f17beb7d4bfa49338958f2b31b206b18/FLAG369e13666 [2021-12-16 02:51:03,467 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:51:03,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i [2021-12-16 02:51:03,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35c4dc54/f17beb7d4bfa49338958f2b31b206b18/FLAG369e13666 [2021-12-16 02:51:03,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35c4dc54/f17beb7d4bfa49338958f2b31b206b18 [2021-12-16 02:51:03,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:51:03,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:51:03,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:03,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:51:03,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:51:03,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:03" (1/1) ... [2021-12-16 02:51:03,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cb2ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:03, skipping insertion in model container [2021-12-16 02:51:03,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:03" (1/1) ... [2021-12-16 02:51:03,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:51:03,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:51:03,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i[945,958] [2021-12-16 02:51:04,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:04,111 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:51:04,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i[945,958] [2021-12-16 02:51:04,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:04,191 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:51:04,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04 WrapperNode [2021-12-16 02:51:04,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:04,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:04,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:51:04,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:51:04,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,225 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-16 02:51:04,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:04,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:51:04,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:51:04,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:51:04,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:51:04,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:51:04,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:51:04,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:51:04,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (1/1) ... [2021-12-16 02:51:04,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:51:04,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:51:04,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:51:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:51:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:51:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:51:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:51:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:51:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-16 02:51:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-16 02:51:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-16 02:51:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-16 02:51:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-16 02:51:04,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-16 02:51:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:51:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:51:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:51:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:51:04,324 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:51:04,405 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:51:04,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:51:04,519 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:51:04,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:51:04,526 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:51:04,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:04 BoogieIcfgContainer [2021-12-16 02:51:04,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:51:04,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:51:04,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:51:04,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:51:04,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:51:03" (1/3) ... [2021-12-16 02:51:04,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:04, skipping insertion in model container [2021-12-16 02:51:04,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:04" (2/3) ... [2021-12-16 02:51:04,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:04, skipping insertion in model container [2021-12-16 02:51:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:04" (3/3) ... [2021-12-16 02:51:04,536 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2021-12-16 02:51:04,540 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:51:04,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:51:04,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:51:04,541 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:51:04,583 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,583 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,583 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,583 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,584 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,584 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,584 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,584 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,585 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,585 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,585 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,585 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,585 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,586 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,587 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,587 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,587 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,587 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,587 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,588 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,588 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,588 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,588 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,588 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,589 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,589 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,589 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,589 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,595 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,595 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,595 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,598 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,598 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,598 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,598 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,600 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,608 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,608 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,608 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,609 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,610 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,612 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,612 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:04,613 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:51:04,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:51:04,665 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:51:04,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 02:51:04,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-16 02:51:04,729 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-16 02:51:04,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:04,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-16 02:51:04,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-16 02:51:04,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-16 02:51:04,751 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-16 02:51:04,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:04,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:04,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:04,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1402349347, now seen corresponding path program 1 times [2021-12-16 02:51:04,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:04,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909404888] [2021-12-16 02:51:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:04,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:05,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:05,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909404888] [2021-12-16 02:51:05,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909404888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:05,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:05,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:05,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7381679] [2021-12-16 02:51:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:05,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:05,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:05,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2021-12-16 02:51:05,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:05,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2021-12-16 02:51:05,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:05,433 INFO L129 PetriNetUnfolder]: 129/432 cut-off events. [2021-12-16 02:51:05,433 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-16 02:51:05,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 432 events. 129/432 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2089 event pairs, 14 based on Foata normal form. 20/438 useless extension candidates. Maximal degree in co-relation 663. Up to 78 conditions per place. [2021-12-16 02:51:05,444 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 21 selfloop transitions, 4 changer transitions 35/118 dead transitions. [2021-12-16 02:51:05,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 368 flow [2021-12-16 02:51:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1002 transitions. [2021-12-16 02:51:05,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8377926421404682 [2021-12-16 02:51:05,462 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1002 transitions. [2021-12-16 02:51:05,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1002 transitions. [2021-12-16 02:51:05,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:05,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1002 transitions. [2021-12-16 02:51:05,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.07692307692308) internal successors, (1002), 13 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,477 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,479 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 1002 transitions. [2021-12-16 02:51:05,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 368 flow [2021-12-16 02:51:05,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 02:51:05,484 INFO L242 Difference]: Finished difference. Result has 105 places, 76 transitions, 212 flow [2021-12-16 02:51:05,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=105, PETRI_TRANSITIONS=76} [2021-12-16 02:51:05,488 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-16 02:51:05,488 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 76 transitions, 212 flow [2021-12-16 02:51:05,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:05,489 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:05,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:51:05,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:05,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1391425404, now seen corresponding path program 1 times [2021-12-16 02:51:05,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872763930] [2021-12-16 02:51:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:05,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:05,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:05,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872763930] [2021-12-16 02:51:05,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872763930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:05,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:05,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:05,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562499417] [2021-12-16 02:51:05,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:05,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:05,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:05,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:51:05,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 76 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:05,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:51:05,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:05,922 INFO L129 PetriNetUnfolder]: 162/562 cut-off events. [2021-12-16 02:51:05,922 INFO L130 PetriNetUnfolder]: For 832/1035 co-relation queries the response was YES. [2021-12-16 02:51:05,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 562 events. 162/562 cut-off events. For 832/1035 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3038 event pairs, 14 based on Foata normal form. 21/565 useless extension candidates. Maximal degree in co-relation 1397. Up to 63 conditions per place. [2021-12-16 02:51:05,926 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 35 selfloop transitions, 14 changer transitions 54/159 dead transitions. [2021-12-16 02:51:05,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 159 transitions, 856 flow [2021-12-16 02:51:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:51:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-16 02:51:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1291 transitions. [2021-12-16 02:51:05,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8254475703324808 [2021-12-16 02:51:05,930 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1291 transitions. [2021-12-16 02:51:05,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1291 transitions. [2021-12-16 02:51:05,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:05,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1291 transitions. [2021-12-16 02:51:05,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.94117647058823) internal successors, (1291), 17 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,936 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,936 INFO L186 Difference]: Start difference. First operand has 105 places, 76 transitions, 212 flow. Second operand 17 states and 1291 transitions. [2021-12-16 02:51:05,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 159 transitions, 856 flow [2021-12-16 02:51:05,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 771 flow, removed 40 selfloop flow, removed 4 redundant places. [2021-12-16 02:51:05,942 INFO L242 Difference]: Finished difference. Result has 123 places, 85 transitions, 354 flow [2021-12-16 02:51:05,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=354, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2021-12-16 02:51:05,943 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2021-12-16 02:51:05,943 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 354 flow [2021-12-16 02:51:05,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:05,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:05,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:05,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:51:05,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1880447995, now seen corresponding path program 1 times [2021-12-16 02:51:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:05,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755470546] [2021-12-16 02:51:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:05,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:06,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:06,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755470546] [2021-12-16 02:51:06,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755470546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:06,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:06,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:06,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855918384] [2021-12-16 02:51:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:06,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:06,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:06,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2021-12-16 02:51:06,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:06,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2021-12-16 02:51:06,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:06,233 INFO L129 PetriNetUnfolder]: 61/340 cut-off events. [2021-12-16 02:51:06,233 INFO L130 PetriNetUnfolder]: For 1510/2066 co-relation queries the response was YES. [2021-12-16 02:51:06,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 340 events. 61/340 cut-off events. For 1510/2066 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1652 event pairs, 8 based on Foata normal form. 7/336 useless extension candidates. Maximal degree in co-relation 1117. Up to 57 conditions per place. [2021-12-16 02:51:06,237 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 22 changer transitions 9/113 dead transitions. [2021-12-16 02:51:06,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 754 flow [2021-12-16 02:51:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 979 transitions. [2021-12-16 02:51:06,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.818561872909699 [2021-12-16 02:51:06,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 979 transitions. [2021-12-16 02:51:06,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 979 transitions. [2021-12-16 02:51:06,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:06,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 979 transitions. [2021-12-16 02:51:06,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.3076923076923) internal successors, (979), 13 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,243 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,243 INFO L186 Difference]: Start difference. First operand has 123 places, 85 transitions, 354 flow. Second operand 13 states and 979 transitions. [2021-12-16 02:51:06,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 754 flow [2021-12-16 02:51:06,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 638 flow, removed 58 selfloop flow, removed 12 redundant places. [2021-12-16 02:51:06,250 INFO L242 Difference]: Finished difference. Result has 122 places, 95 transitions, 502 flow [2021-12-16 02:51:06,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=502, PETRI_PLACES=122, PETRI_TRANSITIONS=95} [2021-12-16 02:51:06,250 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2021-12-16 02:51:06,251 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 95 transitions, 502 flow [2021-12-16 02:51:06,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:06,251 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:06,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:51:06,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1690716541, now seen corresponding path program 1 times [2021-12-16 02:51:06,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237502049] [2021-12-16 02:51:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:06,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:06,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237502049] [2021-12-16 02:51:06,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237502049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:06,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:06,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:06,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006117978] [2021-12-16 02:51:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:06,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:06,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:06,406 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2021-12-16 02:51:06,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 95 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:06,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2021-12-16 02:51:06,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:06,582 INFO L129 PetriNetUnfolder]: 56/378 cut-off events. [2021-12-16 02:51:06,582 INFO L130 PetriNetUnfolder]: For 1711/1957 co-relation queries the response was YES. [2021-12-16 02:51:06,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 378 events. 56/378 cut-off events. For 1711/1957 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1995 event pairs, 4 based on Foata normal form. 12/383 useless extension candidates. Maximal degree in co-relation 1169. Up to 70 conditions per place. [2021-12-16 02:51:06,586 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 33 selfloop transitions, 15 changer transitions 26/133 dead transitions. [2021-12-16 02:51:06,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 1073 flow [2021-12-16 02:51:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2021-12-16 02:51:06,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2021-12-16 02:51:06,588 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2021-12-16 02:51:06,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2021-12-16 02:51:06,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:06,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2021-12-16 02:51:06,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,594 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,594 INFO L186 Difference]: Start difference. First operand has 122 places, 95 transitions, 502 flow. Second operand 13 states and 989 transitions. [2021-12-16 02:51:06,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 1073 flow [2021-12-16 02:51:06,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 133 transitions, 977 flow, removed 48 selfloop flow, removed 4 redundant places. [2021-12-16 02:51:06,603 INFO L242 Difference]: Finished difference. Result has 137 places, 98 transitions, 536 flow [2021-12-16 02:51:06,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=536, PETRI_PLACES=137, PETRI_TRANSITIONS=98} [2021-12-16 02:51:06,604 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 53 predicate places. [2021-12-16 02:51:06,604 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 98 transitions, 536 flow [2021-12-16 02:51:06,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:06,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:06,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:51:06,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1599740162, now seen corresponding path program 1 times [2021-12-16 02:51:06,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:06,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979397215] [2021-12-16 02:51:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:06,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:06,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979397215] [2021-12-16 02:51:06,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979397215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:06,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:06,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:06,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25461296] [2021-12-16 02:51:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:06,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:06,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:06,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:51:06,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 98 transitions, 536 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:06,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:51:06,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:06,912 INFO L129 PetriNetUnfolder]: 159/674 cut-off events. [2021-12-16 02:51:06,913 INFO L130 PetriNetUnfolder]: For 3498/3900 co-relation queries the response was YES. [2021-12-16 02:51:06,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 674 events. 159/674 cut-off events. For 3498/3900 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4122 event pairs, 3 based on Foata normal form. 26/685 useless extension candidates. Maximal degree in co-relation 2093. Up to 103 conditions per place. [2021-12-16 02:51:06,919 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 58 selfloop transitions, 28 changer transitions 28/171 dead transitions. [2021-12-16 02:51:06,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 171 transitions, 1592 flow [2021-12-16 02:51:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:51:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:51:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 833 transitions. [2021-12-16 02:51:06,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8231225296442688 [2021-12-16 02:51:06,921 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 833 transitions. [2021-12-16 02:51:06,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 833 transitions. [2021-12-16 02:51:06,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:06,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 833 transitions. [2021-12-16 02:51:06,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,925 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,925 INFO L186 Difference]: Start difference. First operand has 137 places, 98 transitions, 536 flow. Second operand 11 states and 833 transitions. [2021-12-16 02:51:06,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 171 transitions, 1592 flow [2021-12-16 02:51:06,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 171 transitions, 1343 flow, removed 106 selfloop flow, removed 15 redundant places. [2021-12-16 02:51:06,936 INFO L242 Difference]: Finished difference. Result has 133 places, 116 transitions, 800 flow [2021-12-16 02:51:06,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=800, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2021-12-16 02:51:06,937 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 49 predicate places. [2021-12-16 02:51:06,937 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 800 flow [2021-12-16 02:51:06,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:06,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:06,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:06,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:51:06,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:06,938 INFO L85 PathProgramCache]: Analyzing trace with hash 995416382, now seen corresponding path program 2 times [2021-12-16 02:51:06,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:06,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379070244] [2021-12-16 02:51:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:06,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:07,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:07,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379070244] [2021-12-16 02:51:07,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379070244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:07,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:07,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:07,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846398674] [2021-12-16 02:51:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:07,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:07,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:07,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:51:07,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:07,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:51:07,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:07,198 INFO L129 PetriNetUnfolder]: 116/514 cut-off events. [2021-12-16 02:51:07,198 INFO L130 PetriNetUnfolder]: For 3125/5013 co-relation queries the response was YES. [2021-12-16 02:51:07,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 514 events. 116/514 cut-off events. For 3125/5013 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3056 event pairs, 6 based on Foata normal form. 16/511 useless extension candidates. Maximal degree in co-relation 1850. Up to 83 conditions per place. [2021-12-16 02:51:07,202 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 29 selfloop transitions, 32 changer transitions 44/162 dead transitions. [2021-12-16 02:51:07,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 162 transitions, 1530 flow [2021-12-16 02:51:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:51:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-16 02:51:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1037 transitions. [2021-12-16 02:51:07,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8051242236024845 [2021-12-16 02:51:07,205 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1037 transitions. [2021-12-16 02:51:07,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1037 transitions. [2021-12-16 02:51:07,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:07,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1037 transitions. [2021-12-16 02:51:07,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 74.07142857142857) internal successors, (1037), 14 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 92.0) internal successors, (1380), 15 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,209 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 92.0) internal successors, (1380), 15 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,209 INFO L186 Difference]: Start difference. First operand has 133 places, 116 transitions, 800 flow. Second operand 14 states and 1037 transitions. [2021-12-16 02:51:07,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 162 transitions, 1530 flow [2021-12-16 02:51:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 162 transitions, 1486 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-12-16 02:51:07,218 INFO L242 Difference]: Finished difference. Result has 142 places, 109 transitions, 705 flow [2021-12-16 02:51:07,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=705, PETRI_PLACES=142, PETRI_TRANSITIONS=109} [2021-12-16 02:51:07,219 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 58 predicate places. [2021-12-16 02:51:07,219 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 109 transitions, 705 flow [2021-12-16 02:51:07,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:07,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:07,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:51:07,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 638478540, now seen corresponding path program 1 times [2021-12-16 02:51:07,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:07,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712038697] [2021-12-16 02:51:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:07,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:07,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712038697] [2021-12-16 02:51:07,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712038697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:07,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:07,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:07,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509129401] [2021-12-16 02:51:07,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:07,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:07,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-16 02:51:07,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 109 transitions, 705 flow. Second operand has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:07,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-16 02:51:07,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:07,430 INFO L129 PetriNetUnfolder]: 91/405 cut-off events. [2021-12-16 02:51:07,430 INFO L130 PetriNetUnfolder]: For 2446/2795 co-relation queries the response was YES. [2021-12-16 02:51:07,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 405 events. 91/405 cut-off events. For 2446/2795 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2001 event pairs, 5 based on Foata normal form. 15/408 useless extension candidates. Maximal degree in co-relation 1467. Up to 52 conditions per place. [2021-12-16 02:51:07,433 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 20 selfloop transitions, 5 changer transitions 97/178 dead transitions. [2021-12-16 02:51:07,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 178 transitions, 1689 flow [2021-12-16 02:51:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:51:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:51:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 825 transitions. [2021-12-16 02:51:07,435 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8152173913043478 [2021-12-16 02:51:07,435 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 825 transitions. [2021-12-16 02:51:07,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 825 transitions. [2021-12-16 02:51:07,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:07,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 825 transitions. [2021-12-16 02:51:07,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,439 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,439 INFO L186 Difference]: Start difference. First operand has 142 places, 109 transitions, 705 flow. Second operand 11 states and 825 transitions. [2021-12-16 02:51:07,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 178 transitions, 1689 flow [2021-12-16 02:51:07,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 178 transitions, 1505 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-12-16 02:51:07,449 INFO L242 Difference]: Finished difference. Result has 151 places, 74 transitions, 301 flow [2021-12-16 02:51:07,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=301, PETRI_PLACES=151, PETRI_TRANSITIONS=74} [2021-12-16 02:51:07,450 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 67 predicate places. [2021-12-16 02:51:07,450 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 74 transitions, 301 flow [2021-12-16 02:51:07,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,451 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:07,451 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:07,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:51:07,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1272238654, now seen corresponding path program 1 times [2021-12-16 02:51:07,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:07,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536416193] [2021-12-16 02:51:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:07,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:07,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:07,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536416193] [2021-12-16 02:51:07,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536416193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:07,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:07,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:51:07,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219322857] [2021-12-16 02:51:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:07,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:51:07,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:51:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:51:07,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-16 02:51:07,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 74 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:07,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-16 02:51:07,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:07,620 INFO L129 PetriNetUnfolder]: 119/369 cut-off events. [2021-12-16 02:51:07,620 INFO L130 PetriNetUnfolder]: For 501/512 co-relation queries the response was YES. [2021-12-16 02:51:07,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 369 events. 119/369 cut-off events. For 501/512 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1856 event pairs, 14 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 717. Up to 86 conditions per place. [2021-12-16 02:51:07,624 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 14 selfloop transitions, 5 changer transitions 27/106 dead transitions. [2021-12-16 02:51:07,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 106 transitions, 461 flow [2021-12-16 02:51:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2021-12-16 02:51:07,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2021-12-16 02:51:07,626 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2021-12-16 02:51:07,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2021-12-16 02:51:07,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:07,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2021-12-16 02:51:07,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,630 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,630 INFO L186 Difference]: Start difference. First operand has 151 places, 74 transitions, 301 flow. Second operand 10 states and 798 transitions. [2021-12-16 02:51:07,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 106 transitions, 461 flow [2021-12-16 02:51:07,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 348 flow, removed 29 selfloop flow, removed 40 redundant places. [2021-12-16 02:51:07,633 INFO L242 Difference]: Finished difference. Result has 105 places, 75 transitions, 236 flow [2021-12-16 02:51:07,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2021-12-16 02:51:07,634 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-16 02:51:07,634 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 236 flow [2021-12-16 02:51:07,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,634 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:07,635 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] [2021-12-16 02:51:07,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:51:07,635 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1261903235, now seen corresponding path program 1 times [2021-12-16 02:51:07,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:07,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852341912] [2021-12-16 02:51:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:07,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:07,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852341912] [2021-12-16 02:51:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852341912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:07,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:07,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:07,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949283782] [2021-12-16 02:51:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:07,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:07,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-16 02:51:07,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:07,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-16 02:51:07,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:07,789 INFO L129 PetriNetUnfolder]: 47/208 cut-off events. [2021-12-16 02:51:07,790 INFO L130 PetriNetUnfolder]: For 276/309 co-relation queries the response was YES. [2021-12-16 02:51:07,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 208 events. 47/208 cut-off events. For 276/309 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 757 event pairs, 0 based on Foata normal form. 9/215 useless extension candidates. Maximal degree in co-relation 543. Up to 69 conditions per place. [2021-12-16 02:51:07,791 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 11 selfloop transitions, 7 changer transitions 25/103 dead transitions. [2021-12-16 02:51:07,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 511 flow [2021-12-16 02:51:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 795 transitions. [2021-12-16 02:51:07,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641304347826086 [2021-12-16 02:51:07,793 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 795 transitions. [2021-12-16 02:51:07,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 795 transitions. [2021-12-16 02:51:07,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:07,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 795 transitions. [2021-12-16 02:51:07,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,796 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,796 INFO L186 Difference]: Start difference. First operand has 105 places, 75 transitions, 236 flow. Second operand 10 states and 795 transitions. [2021-12-16 02:51:07,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 511 flow [2021-12-16 02:51:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 482 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-12-16 02:51:07,799 INFO L242 Difference]: Finished difference. Result has 108 places, 75 transitions, 256 flow [2021-12-16 02:51:07,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=256, PETRI_PLACES=108, PETRI_TRANSITIONS=75} [2021-12-16 02:51:07,799 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2021-12-16 02:51:07,800 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions, 256 flow [2021-12-16 02:51:07,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:07,800 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:07,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:51:07,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 415493732, now seen corresponding path program 1 times [2021-12-16 02:51:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:07,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643990437] [2021-12-16 02:51:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:07,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:07,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:07,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643990437] [2021-12-16 02:51:07,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643990437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:07,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:07,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:07,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708613738] [2021-12-16 02:51:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:07,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:07,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:07,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-16 02:51:07,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:07,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-16 02:51:07,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:07,970 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2021-12-16 02:51:07,970 INFO L130 PetriNetUnfolder]: For 193/209 co-relation queries the response was YES. [2021-12-16 02:51:07,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 101 events. 9/101 cut-off events. For 193/209 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 0 based on Foata normal form. 6/107 useless extension candidates. Maximal degree in co-relation 248. Up to 18 conditions per place. [2021-12-16 02:51:07,971 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-12-16 02:51:07,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 80 transitions, 372 flow [2021-12-16 02:51:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:51:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:51:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2021-12-16 02:51:07,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8438735177865613 [2021-12-16 02:51:07,973 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 854 transitions. [2021-12-16 02:51:07,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 854 transitions. [2021-12-16 02:51:07,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:07,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 854 transitions. [2021-12-16 02:51:07,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.63636363636364) internal successors, (854), 11 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,976 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,976 INFO L186 Difference]: Start difference. First operand has 108 places, 75 transitions, 256 flow. Second operand 11 states and 854 transitions. [2021-12-16 02:51:07,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 80 transitions, 372 flow [2021-12-16 02:51:07,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 302 flow, removed 23 selfloop flow, removed 12 redundant places. [2021-12-16 02:51:07,977 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2021-12-16 02:51:07,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2021-12-16 02:51:07,978 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2021-12-16 02:51:07,978 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2021-12-16 02:51:07,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:07,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-16 02:51:07,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-16 02:51:07,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-16 02:51:07,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-16 02:51:07,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:51:07,984 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:07,986 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:51:07,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:51:07,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:51:07 BasicIcfg [2021-12-16 02:51:07,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:51:07,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:51:07,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:51:07,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:51:07,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:04" (3/4) ... [2021-12-16 02:51:07,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:51:07,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-16 02:51:07,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-16 02:51:07,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-16 02:51:07,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-16 02:51:07,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 02:51:08,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:51:08,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:51:08,019 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:51:08,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:51:08,019 INFO L158 Benchmark]: Toolchain (without parser) took 4181.83ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 60.8MB in the beginning and 102.3MB in the end (delta: -41.6MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-12-16 02:51:08,020 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:51:08,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.98ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 60.6MB in the beginning and 84.5MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 02:51:08,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.45ms. Allocated memory is still 117.4MB. Free memory was 84.5MB in the beginning and 82.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:51:08,020 INFO L158 Benchmark]: Boogie Preprocessor took 28.14ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:08,021 INFO L158 Benchmark]: RCFGBuilder took 268.72ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 69.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:51:08,021 INFO L158 Benchmark]: TraceAbstraction took 3458.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 69.0MB in the beginning and 105.5MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:51:08,021 INFO L158 Benchmark]: Witness Printer took 29.90ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 02:51:08,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.98ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 60.6MB in the beginning and 84.5MB in the end (delta: -23.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.45ms. Allocated memory is still 117.4MB. Free memory was 84.5MB in the beginning and 82.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.14ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.72ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 69.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3458.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 69.0MB in the beginning and 105.5MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.90ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 102.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 506 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 651 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 590 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 170 mSDtfsCounter, 590 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=5, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 2648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 02:51:08,062 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