./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:51:54,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:51:54,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:51:54,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:51:54,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:51:54,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:51:54,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:51:54,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:51:54,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:51:54,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:51:54,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:51:54,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:51:54,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:51:54,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:51:54,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:51:54,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:51:54,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:51:54,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:51:54,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:51:54,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:51:54,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:51:54,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:51:54,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:51:54,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:51:54,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:51:54,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:51:54,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:51:54,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:51:54,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:51:54,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:51:54,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:51:54,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:51:54,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:51:54,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:51:54,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:51:54,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:51:54,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:51:54,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:51:54,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:51:54,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:51:54,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:51:54,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:51:54,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:51:54,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:51:54,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:51:54,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:51:54,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:51:54,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:51:54,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:51:54,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:51:54,817 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:51:54,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:51:54,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:51:54,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:51:54,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:51:54,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:51:54,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:51:54,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:51:54,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:51:54,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:51:54,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:51:54,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:54,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:51:54,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:51:54,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:51:54,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:51:54,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:51:54,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:51:54,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:51:54,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:51:54,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:51:54,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2021-12-16 02:51:54,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:51:55,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:51:55,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:51:55,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:51:55,018 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:51:55,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-16 02:51:55,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bce1d523/3f79d476d0654bcc9a73afa9a60a70fc/FLAG12ad6e427 [2021-12-16 02:51:55,508 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:51:55,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-16 02:51:55,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bce1d523/3f79d476d0654bcc9a73afa9a60a70fc/FLAG12ad6e427 [2021-12-16 02:51:55,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bce1d523/3f79d476d0654bcc9a73afa9a60a70fc [2021-12-16 02:51:55,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:51:55,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:51:55,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:55,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:51:55,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:51:55,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:55" (1/1) ... [2021-12-16 02:51:55,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec559b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:55, skipping insertion in model container [2021-12-16 02:51:55,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:55" (1/1) ... [2021-12-16 02:51:55,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:51:55,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:51:56,035 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-16 02:51:56,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:56,187 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:51:56,197 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-16 02:51:56,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:56,280 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:51:56,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56 WrapperNode [2021-12-16 02:51:56,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:56,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:56,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:51:56,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:51:56,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,330 INFO L137 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2021-12-16 02:51:56,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:56,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:51:56,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:51:56,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:51:56,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:51:56,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:51:56,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:51:56,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:51:56,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (1/1) ... [2021-12-16 02:51:56,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:56,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:51:56,423 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 02:51:56,439 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 02:51:56,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:51:56,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:51:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:51:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:51:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:51:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-16 02:51:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-16 02:51:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-16 02:51:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-16 02:51:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-16 02:51:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-16 02:51:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-12-16 02:51:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-12-16 02:51:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:51:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:51:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:51:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:51:56,454 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 02:51:56,532 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:51:56,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:51:56,660 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:51:56,665 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:51:56,666 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:51:56,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:56 BoogieIcfgContainer [2021-12-16 02:51:56,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:51:56,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:51:56,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:51:56,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:51:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:51:55" (1/3) ... [2021-12-16 02:51:56,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aea8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:56, skipping insertion in model container [2021-12-16 02:51:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:56" (2/3) ... [2021-12-16 02:51:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aea8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:56, skipping insertion in model container [2021-12-16 02:51:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:56" (3/3) ... [2021-12-16 02:51:56,678 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-16 02:51:56,682 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:51:56,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:51:56,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:51:56,682 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,730 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,730 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,731 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,731 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,731 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,736 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,737 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,737 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,737 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,737 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,738 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,740 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,744 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,744 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,744 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,745 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,746 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,746 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,753 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,753 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,759 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,759 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,760 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,760 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,761 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,762 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:56,763 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:51:56,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:51:56,816 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 02:51:56,817 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-16 02:51:56,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 107 transitions, 234 flow [2021-12-16 02:51:56,917 INFO L129 PetriNetUnfolder]: 2/103 cut-off events. [2021-12-16 02:51:56,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:56,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2021-12-16 02:51:56,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 107 transitions, 234 flow [2021-12-16 02:51:56,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 87 transitions, 186 flow [2021-12-16 02:51:56,954 INFO L129 PetriNetUnfolder]: 1/86 cut-off events. [2021-12-16 02:51:56,954 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:56,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:56,956 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 02:51:56,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 915847760, now seen corresponding path program 1 times [2021-12-16 02:51:56,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441263372] [2021-12-16 02:51:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:56,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:57,435 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 02:51:57,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:57,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441263372] [2021-12-16 02:51:57,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441263372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:57,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:57,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:57,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882844118] [2021-12-16 02:51:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:57,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:57,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2021-12-16 02:51:57,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 02:51:57,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:57,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2021-12-16 02:51:57,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:57,677 INFO L129 PetriNetUnfolder]: 97/321 cut-off events. [2021-12-16 02:51:57,677 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-16 02:51:57,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 321 events. 97/321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1219 event pairs, 21 based on Foata normal form. 11/310 useless extension candidates. Maximal degree in co-relation 511. Up to 93 conditions per place. [2021-12-16 02:51:57,682 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 17 selfloop transitions, 4 changer transitions 25/114 dead transitions. [2021-12-16 02:51:57,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 335 flow [2021-12-16 02:51:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 900 transitions. [2021-12-16 02:51:57,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8411214953271028 [2021-12-16 02:51:57,699 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 900 transitions. [2021-12-16 02:51:57,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 900 transitions. [2021-12-16 02:51:57,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:57,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 900 transitions. [2021-12-16 02:51:57,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:57,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:57,717 INFO L186 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 10 states and 900 transitions. [2021-12-16 02:51:57,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 335 flow [2021-12-16 02:51:57,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 02:51:57,722 INFO L242 Difference]: Finished difference. Result has 111 places, 86 transitions, 204 flow [2021-12-16 02:51:57,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=111, PETRI_TRANSITIONS=86} [2021-12-16 02:51:57,726 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 12 predicate places. [2021-12-16 02:51:57,726 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 204 flow [2021-12-16 02:51:57,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 02:51:57,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:57,727 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 02:51:57,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:51:57,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1477336817, now seen corresponding path program 1 times [2021-12-16 02:51:57,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948290701] [2021-12-16 02:51:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:57,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:57,816 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 02:51:57,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948290701] [2021-12-16 02:51:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948290701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:57,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:57,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:57,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149266174] [2021-12-16 02:51:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:57,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:57,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:57,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2021-12-16 02:51:57,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 86 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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 02:51:57,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:57,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2021-12-16 02:51:57,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:57,933 INFO L129 PetriNetUnfolder]: 64/289 cut-off events. [2021-12-16 02:51:57,933 INFO L130 PetriNetUnfolder]: For 63/72 co-relation queries the response was YES. [2021-12-16 02:51:57,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 289 events. 64/289 cut-off events. For 63/72 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1024 event pairs, 33 based on Foata normal form. 6/277 useless extension candidates. Maximal degree in co-relation 499. Up to 75 conditions per place. [2021-12-16 02:51:57,947 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 21 selfloop transitions, 2 changer transitions 19/110 dead transitions. [2021-12-16 02:51:57,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 363 flow [2021-12-16 02:51:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:51:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:51:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 809 transitions. [2021-12-16 02:51:57,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8400830737279336 [2021-12-16 02:51:57,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 809 transitions. [2021-12-16 02:51:57,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 809 transitions. [2021-12-16 02:51:57,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:57,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 809 transitions. [2021-12-16 02:51:57,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.88888888888889) internal successors, (809), 9 states have internal predecessors, (809), 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 02:51:57,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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 02:51:57,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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 02:51:57,954 INFO L186 Difference]: Start difference. First operand has 111 places, 86 transitions, 204 flow. Second operand 9 states and 809 transitions. [2021-12-16 02:51:57,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 363 flow [2021-12-16 02:51:57,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 325 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-12-16 02:51:57,958 INFO L242 Difference]: Finished difference. Result has 111 places, 86 transitions, 204 flow [2021-12-16 02:51:57,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=111, PETRI_TRANSITIONS=86} [2021-12-16 02:51:57,959 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 12 predicate places. [2021-12-16 02:51:57,959 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 204 flow [2021-12-16 02:51:57,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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 02:51:57,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:57,960 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:57,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:51:57,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 898502224, now seen corresponding path program 1 times [2021-12-16 02:51:57,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:57,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919807632] [2021-12-16 02:51:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:57,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:58,049 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 02:51:58,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919807632] [2021-12-16 02:51:58,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919807632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:58,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:58,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:58,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843543531] [2021-12-16 02:51:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:58,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:58,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:58,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:58,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 107 [2021-12-16 02:51:58,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 86 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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 02:51:58,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:58,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 107 [2021-12-16 02:51:58,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:58,188 INFO L129 PetriNetUnfolder]: 101/348 cut-off events. [2021-12-16 02:51:58,189 INFO L130 PetriNetUnfolder]: For 114/222 co-relation queries the response was YES. [2021-12-16 02:51:58,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 348 events. 101/348 cut-off events. For 114/222 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1342 event pairs, 30 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 664. Up to 51 conditions per place. [2021-12-16 02:51:58,191 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 20 selfloop transitions, 4 changer transitions 26/116 dead transitions. [2021-12-16 02:51:58,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 393 flow [2021-12-16 02:51:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 882 transitions. [2021-12-16 02:51:58,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8242990654205608 [2021-12-16 02:51:58,193 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 882 transitions. [2021-12-16 02:51:58,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 882 transitions. [2021-12-16 02:51:58,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:58,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 882 transitions. [2021-12-16 02:51:58,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.2) internal successors, (882), 10 states have internal predecessors, (882), 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 02:51:58,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,198 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,198 INFO L186 Difference]: Start difference. First operand has 111 places, 86 transitions, 204 flow. Second operand 10 states and 882 transitions. [2021-12-16 02:51:58,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 393 flow [2021-12-16 02:51:58,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 116 transitions, 359 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-12-16 02:51:58,201 INFO L242 Difference]: Finished difference. Result has 114 places, 86 transitions, 218 flow [2021-12-16 02:51:58,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=114, PETRI_TRANSITIONS=86} [2021-12-16 02:51:58,202 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2021-12-16 02:51:58,202 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 86 transitions, 218 flow [2021-12-16 02:51:58,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 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 02:51:58,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:58,203 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:58,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:51:58,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash -895468465, now seen corresponding path program 1 times [2021-12-16 02:51:58,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:58,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221316242] [2021-12-16 02:51:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:58,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:58,310 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 02:51:58,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:58,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221316242] [2021-12-16 02:51:58,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221316242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:58,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:58,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:58,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023701443] [2021-12-16 02:51:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:58,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:58,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:58,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 86 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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 02:51:58,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:58,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:58,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:58,442 INFO L129 PetriNetUnfolder]: 30/222 cut-off events. [2021-12-16 02:51:58,443 INFO L130 PetriNetUnfolder]: For 110/128 co-relation queries the response was YES. [2021-12-16 02:51:58,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 222 events. 30/222 cut-off events. For 110/128 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 754 event pairs, 2 based on Foata normal form. 5/219 useless extension candidates. Maximal degree in co-relation 381. Up to 21 conditions per place. [2021-12-16 02:51:58,444 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 16 selfloop transitions, 4 changer transitions 18/109 dead transitions. [2021-12-16 02:51:58,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 379 flow [2021-12-16 02:51:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 920 transitions. [2021-12-16 02:51:58,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2021-12-16 02:51:58,447 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 920 transitions. [2021-12-16 02:51:58,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 920 transitions. [2021-12-16 02:51:58,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:58,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 920 transitions. [2021-12-16 02:51:58,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 02:51:58,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,451 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,451 INFO L186 Difference]: Start difference. First operand has 114 places, 86 transitions, 218 flow. Second operand 10 states and 920 transitions. [2021-12-16 02:51:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 379 flow [2021-12-16 02:51:58,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 329 flow, removed 20 selfloop flow, removed 10 redundant places. [2021-12-16 02:51:58,456 INFO L242 Difference]: Finished difference. Result has 115 places, 86 transitions, 222 flow [2021-12-16 02:51:58,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=115, PETRI_TRANSITIONS=86} [2021-12-16 02:51:58,457 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2021-12-16 02:51:58,457 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 86 transitions, 222 flow [2021-12-16 02:51:58,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 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 02:51:58,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:58,458 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:58,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:51:58,458 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 925818260, now seen corresponding path program 1 times [2021-12-16 02:51:58,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:58,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919849964] [2021-12-16 02:51:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:58,586 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 02:51:58,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:58,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919849964] [2021-12-16 02:51:58,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919849964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:58,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:58,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:51:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246176040] [2021-12-16 02:51:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:58,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:51:58,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:51:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:51:58,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:58,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 86 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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 02:51:58,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:58,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:58,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:58,734 INFO L129 PetriNetUnfolder]: 335/806 cut-off events. [2021-12-16 02:51:58,735 INFO L130 PetriNetUnfolder]: For 140/143 co-relation queries the response was YES. [2021-12-16 02:51:58,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 806 events. 335/806 cut-off events. For 140/143 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4843 event pairs, 13 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 1485. Up to 216 conditions per place. [2021-12-16 02:51:58,740 INFO L132 encePairwiseOnDemand]: 96/107 looper letters, 18 selfloop transitions, 7 changer transitions 30/125 dead transitions. [2021-12-16 02:51:58,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 125 transitions, 414 flow [2021-12-16 02:51:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 937 transitions. [2021-12-16 02:51:58,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8757009345794392 [2021-12-16 02:51:58,743 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 937 transitions. [2021-12-16 02:51:58,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 937 transitions. [2021-12-16 02:51:58,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:58,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 937 transitions. [2021-12-16 02:51:58,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.7) internal successors, (937), 10 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:58,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:58,747 INFO L186 Difference]: Start difference. First operand has 115 places, 86 transitions, 222 flow. Second operand 10 states and 937 transitions. [2021-12-16 02:51:58,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 125 transitions, 414 flow [2021-12-16 02:51:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 388 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-12-16 02:51:58,752 INFO L242 Difference]: Finished difference. Result has 114 places, 89 transitions, 262 flow [2021-12-16 02:51:58,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2021-12-16 02:51:58,755 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2021-12-16 02:51:58,755 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 262 flow [2021-12-16 02:51:58,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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 02:51:58,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:58,756 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:58,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:51:58,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2084729738, now seen corresponding path program 1 times [2021-12-16 02:51:58,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319124812] [2021-12-16 02:51:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:58,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:58,859 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 02:51:58,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:58,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319124812] [2021-12-16 02:51:58,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319124812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:58,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:58,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:58,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384650260] [2021-12-16 02:51:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:58,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:58,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:58,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:58,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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 02:51:58,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:58,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:58,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:58,997 INFO L129 PetriNetUnfolder]: 203/574 cut-off events. [2021-12-16 02:51:58,997 INFO L130 PetriNetUnfolder]: For 985/1020 co-relation queries the response was YES. [2021-12-16 02:51:58,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 574 events. 203/574 cut-off events. For 985/1020 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3080 event pairs, 2 based on Foata normal form. 17/588 useless extension candidates. Maximal degree in co-relation 1769. Up to 256 conditions per place. [2021-12-16 02:51:59,001 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 11 changer transitions 23/123 dead transitions. [2021-12-16 02:51:59,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 605 flow [2021-12-16 02:51:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 935 transitions. [2021-12-16 02:51:59,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8738317757009346 [2021-12-16 02:51:59,004 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 935 transitions. [2021-12-16 02:51:59,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 935 transitions. [2021-12-16 02:51:59,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:59,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 935 transitions. [2021-12-16 02:51:59,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.5) internal successors, (935), 10 states have internal predecessors, (935), 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 02:51:59,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:59,008 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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 02:51:59,008 INFO L186 Difference]: Start difference. First operand has 114 places, 89 transitions, 262 flow. Second operand 10 states and 935 transitions. [2021-12-16 02:51:59,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 605 flow [2021-12-16 02:51:59,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 580 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-12-16 02:51:59,011 INFO L242 Difference]: Finished difference. Result has 118 places, 93 transitions, 350 flow [2021-12-16 02:51:59,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2021-12-16 02:51:59,012 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 19 predicate places. [2021-12-16 02:51:59,012 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 350 flow [2021-12-16 02:51:59,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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 02:51:59,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:59,013 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:59,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:51:59,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -326737363, now seen corresponding path program 1 times [2021-12-16 02:51:59,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:59,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443383111] [2021-12-16 02:51:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:59,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:59,134 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 02:51:59,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:59,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443383111] [2021-12-16 02:51:59,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443383111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:59,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:59,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:59,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253839359] [2021-12-16 02:51:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:59,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:59,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:59,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:59,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 350 flow. Second operand has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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 02:51:59,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:59,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:59,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:59,291 INFO L129 PetriNetUnfolder]: 101/362 cut-off events. [2021-12-16 02:51:59,292 INFO L130 PetriNetUnfolder]: For 1754/1822 co-relation queries the response was YES. [2021-12-16 02:51:59,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 362 events. 101/362 cut-off events. For 1754/1822 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1577 event pairs, 0 based on Foata normal form. 19/380 useless extension candidates. Maximal degree in co-relation 1385. Up to 138 conditions per place. [2021-12-16 02:51:59,294 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 19 selfloop transitions, 15 changer transitions 23/127 dead transitions. [2021-12-16 02:51:59,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 127 transitions, 854 flow [2021-12-16 02:51:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:51:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:51:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1027 transitions. [2021-12-16 02:51:59,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725573491928632 [2021-12-16 02:51:59,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1027 transitions. [2021-12-16 02:51:59,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1027 transitions. [2021-12-16 02:51:59,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:59,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1027 transitions. [2021-12-16 02:51:59,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.36363636363636) internal successors, (1027), 11 states have internal predecessors, (1027), 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 02:51:59,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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 02:51:59,302 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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 02:51:59,302 INFO L186 Difference]: Start difference. First operand has 118 places, 93 transitions, 350 flow. Second operand 11 states and 1027 transitions. [2021-12-16 02:51:59,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 127 transitions, 854 flow [2021-12-16 02:51:59,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 674 flow, removed 79 selfloop flow, removed 9 redundant places. [2021-12-16 02:51:59,306 INFO L242 Difference]: Finished difference. Result has 121 places, 97 transitions, 400 flow [2021-12-16 02:51:59,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2021-12-16 02:51:59,307 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 22 predicate places. [2021-12-16 02:51:59,307 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 400 flow [2021-12-16 02:51:59,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.625) internal successors, (717), 8 states have internal predecessors, (717), 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 02:51:59,308 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:59,308 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:59,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:51:59,309 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash 472979402, now seen corresponding path program 1 times [2021-12-16 02:51:59,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45936104] [2021-12-16 02:51:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:59,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:59,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:59,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45936104] [2021-12-16 02:51:59,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45936104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:59,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:59,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:51:59,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536797353] [2021-12-16 02:51:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:59,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:51:59,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:51:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:51:59,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:59,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 400 flow. Second operand has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 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 02:51:59,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:59,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:59,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:59,515 INFO L129 PetriNetUnfolder]: 37/208 cut-off events. [2021-12-16 02:51:59,515 INFO L130 PetriNetUnfolder]: For 804/826 co-relation queries the response was YES. [2021-12-16 02:51:59,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 208 events. 37/208 cut-off events. For 804/826 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 650 event pairs, 0 based on Foata normal form. 17/224 useless extension candidates. Maximal degree in co-relation 642. Up to 53 conditions per place. [2021-12-16 02:51:59,517 INFO L132 encePairwiseOnDemand]: 97/107 looper letters, 11 selfloop transitions, 19 changer transitions 15/115 dead transitions. [2021-12-16 02:51:59,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 115 transitions, 676 flow [2021-12-16 02:51:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:51:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-16 02:51:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1103 transitions. [2021-12-16 02:51:59,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8590342679127726 [2021-12-16 02:51:59,520 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1103 transitions. [2021-12-16 02:51:59,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1103 transitions. [2021-12-16 02:51:59,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:59,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1103 transitions. [2021-12-16 02:51:59,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.91666666666667) internal successors, (1103), 12 states have internal predecessors, (1103), 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 02:51:59,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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 02:51:59,525 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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 02:51:59,525 INFO L186 Difference]: Start difference. First operand has 121 places, 97 transitions, 400 flow. Second operand 12 states and 1103 transitions. [2021-12-16 02:51:59,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 115 transitions, 676 flow [2021-12-16 02:51:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 536 flow, removed 53 selfloop flow, removed 12 redundant places. [2021-12-16 02:51:59,529 INFO L242 Difference]: Finished difference. Result has 122 places, 97 transitions, 370 flow [2021-12-16 02:51:59,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2021-12-16 02:51:59,530 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 23 predicate places. [2021-12-16 02:51:59,530 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 370 flow [2021-12-16 02:51:59,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 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 02:51:59,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:59,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:59,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:51:59,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1797744709, now seen corresponding path program 1 times [2021-12-16 02:51:59,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:59,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4860783] [2021-12-16 02:51:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:59,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:59,590 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 02:51:59,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4860783] [2021-12-16 02:51:59,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4860783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:59,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:59,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305598018] [2021-12-16 02:51:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:59,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:59,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:59,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:59,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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 02:51:59,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:59,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:59,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:59,670 INFO L129 PetriNetUnfolder]: 43/257 cut-off events. [2021-12-16 02:51:59,670 INFO L130 PetriNetUnfolder]: For 323/370 co-relation queries the response was YES. [2021-12-16 02:51:59,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 257 events. 43/257 cut-off events. For 323/370 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 931 event pairs, 1 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 564. Up to 41 conditions per place. [2021-12-16 02:51:59,672 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 14 selfloop transitions, 1 changer transitions 8/105 dead transitions. [2021-12-16 02:51:59,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 437 flow [2021-12-16 02:51:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:51:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 02:51:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2021-12-16 02:51:59,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8544726301735648 [2021-12-16 02:51:59,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2021-12-16 02:51:59,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2021-12-16 02:51:59,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:59,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2021-12-16 02:51:59,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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 02:51:59,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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 02:51:59,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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 02:51:59,677 INFO L186 Difference]: Start difference. First operand has 122 places, 97 transitions, 370 flow. Second operand 7 states and 640 transitions. [2021-12-16 02:51:59,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 437 flow [2021-12-16 02:51:59,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 311 flow, removed 31 selfloop flow, removed 17 redundant places. [2021-12-16 02:51:59,680 INFO L242 Difference]: Finished difference. Result has 112 places, 97 transitions, 257 flow [2021-12-16 02:51:59,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2021-12-16 02:51:59,680 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2021-12-16 02:51:59,681 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 257 flow [2021-12-16 02:51:59,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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 02:51:59,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:59,681 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:59,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:51:59,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:51:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1553836557, now seen corresponding path program 2 times [2021-12-16 02:51:59,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:59,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120143728] [2021-12-16 02:51:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:59,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:59,737 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 02:51:59,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:59,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120143728] [2021-12-16 02:51:59,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120143728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:59,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:59,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:59,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179432481] [2021-12-16 02:51:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:59,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:59,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:59,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 107 [2021-12-16 02:51:59,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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 02:51:59,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:59,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 107 [2021-12-16 02:51:59,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:59,800 INFO L129 PetriNetUnfolder]: 34/212 cut-off events. [2021-12-16 02:51:59,801 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-16 02:51:59,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 212 events. 34/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 772 event pairs, 1 based on Foata normal form. 1/204 useless extension candidates. Maximal degree in co-relation 322. Up to 30 conditions per place. [2021-12-16 02:51:59,802 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2021-12-16 02:51:59,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 97 transitions, 288 flow [2021-12-16 02:51:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:51:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 02:51:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2021-12-16 02:51:59,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8451268357810414 [2021-12-16 02:51:59,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2021-12-16 02:51:59,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2021-12-16 02:51:59,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:59,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2021-12-16 02:51:59,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 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 02:51:59,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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 02:51:59,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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 02:51:59,807 INFO L186 Difference]: Start difference. First operand has 112 places, 97 transitions, 257 flow. Second operand 7 states and 633 transitions. [2021-12-16 02:51:59,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 97 transitions, 288 flow [2021-12-16 02:51:59,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 281 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-12-16 02:51:59,808 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-12-16 02:51:59,808 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-12-16 02:51:59,809 INFO L334 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2021-12-16 02:51:59,809 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-12-16 02:51:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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 02:51:59,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-16 02:51:59,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-12-16 02:51:59,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-12-16 02:51:59,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-12-16 02:51:59,812 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-12-16 02:51:59,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:51:59,815 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:59,816 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:51:59,817 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:51:59,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:51:59 BasicIcfg [2021-12-16 02:51:59,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:51:59,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:51:59,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:51:59,819 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:51:59,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:56" (3/4) ... [2021-12-16 02:51:59,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:51:59,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-16 02:51:59,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-16 02:51:59,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-16 02:51:59,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-12-16 02:51:59,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-16 02:51:59,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 02:51:59,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:51:59,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:51:59,849 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:51:59,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:51:59,850 INFO L158 Benchmark]: Toolchain (without parser) took 4003.97ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 94.6MB in the beginning and 129.3MB in the end (delta: -34.7MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,850 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 92.3MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:51:59,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.50ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 90.5MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 125.8MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,851 INFO L158 Benchmark]: Boogie Preprocessor took 42.99ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,851 INFO L158 Benchmark]: RCFGBuilder took 292.95ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 73.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,851 INFO L158 Benchmark]: TraceAbstraction took 3149.95ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 73.2MB in the beginning and 132.4MB in the end (delta: -59.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,851 INFO L158 Benchmark]: Witness Printer took 30.29ms. Allocated memory is still 207.6MB. Free memory was 132.4MB in the beginning and 129.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 02:51:59,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 92.3MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.50ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 90.5MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 125.8MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.99ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 87.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 292.95ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 73.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3149.95ms. Allocated memory was 125.8MB in the beginning and 207.6MB in the end (delta: 81.8MB). Free memory was 73.2MB in the beginning and 132.4MB in the end (delta: -59.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 30.29ms. Allocated memory is still 207.6MB. Free memory was 132.4MB in the beginning and 129.3MB in the end (delta: 3.2MB). 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 9 procedures, 136 locations, 5 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: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 100 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 2751 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 02:51:59,879 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