./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/rfi000_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:08:20,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:08:20,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:08:20,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:08:20,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:08:20,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:08:20,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:08:20,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:08:20,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:08:20,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:08:20,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:08:20,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:08:20,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:08:20,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:08:20,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:08:20,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:08:20,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:08:20,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:08:20,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:08:20,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:08:20,799 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:08:20,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:08:20,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:08:20,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:08:20,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:08:20,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:08:20,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:08:20,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:08:20,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:08:20,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:08:20,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:08:20,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:08:20,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:08:20,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:08:20,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:08:20,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:08:20,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:08:20,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:08:20,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:08:20,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:08:20,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:08:20,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:08:20,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:08:20,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:08:20,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:08:20,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:08:20,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:08:20,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:08:20,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:08:20,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:08:20,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:08:20,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:08:20,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:08:20,848 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:08:20,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:08:20,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:08:20,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:08:20,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:08:20,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:08:20,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:08:20,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:08:20,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:20,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:08:20,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:08:20,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:08:20,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2022-07-12 10:08:21,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:08:21,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:08:21,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:08:21,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:08:21,097 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:08:21,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-12 10:08:21,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca529a163/49d1f0a8c433490c9c51a243caeab4ab/FLAG2213f123a [2022-07-12 10:08:21,673 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:08:21,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-12 10:08:21,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca529a163/49d1f0a8c433490c9c51a243caeab4ab/FLAG2213f123a [2022-07-12 10:08:22,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca529a163/49d1f0a8c433490c9c51a243caeab4ab [2022-07-12 10:08:22,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:08:22,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:08:22,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:22,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:08:22,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:08:22,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4953292d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22, skipping insertion in model container [2022-07-12 10:08:22,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:08:22,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:08:22,305 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/rfi000_tso.i[944,957] [2022-07-12 10:08:22,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:22,420 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:08:22,430 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/rfi000_tso.i[944,957] [2022-07-12 10:08:22,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:22,503 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:08:22,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22 WrapperNode [2022-07-12 10:08:22,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:22,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:22,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:08:22,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:08:22,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,577 INFO L137 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 464 [2022-07-12 10:08:22,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:22,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:08:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:08:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:08:22,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:08:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:08:22,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:08:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:08:22,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (1/1) ... [2022-07-12 10:08:22,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:08:22,688 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) [2022-07-12 10:08:22,693 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 [2022-07-12 10:08:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:08:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:08:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:08:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:08:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:08:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:08:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:08:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:08:22,714 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:08:22,794 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:08:22,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:08:23,255 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:08:23,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:08:23,681 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:08:23,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:23 BoogieIcfgContainer [2022-07-12 10:08:23,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:08:23,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:08:23,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:08:23,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:08:23,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:08:22" (1/3) ... [2022-07-12 10:08:23,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:23, skipping insertion in model container [2022-07-12 10:08:23,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:22" (2/3) ... [2022-07-12 10:08:23,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:23, skipping insertion in model container [2022-07-12 10:08:23,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:23" (3/3) ... [2022-07-12 10:08:23,690 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2022-07-12 10:08:23,695 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:08:23,701 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:08:23,701 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:08:23,701 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:08:23,754 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:08:23,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 204 flow [2022-07-12 10:08:23,824 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2022-07-12 10:08:23,825 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:23,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-07-12 10:08:23,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 204 flow [2022-07-12 10:08:23,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 196 flow [2022-07-12 10:08:23,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:08:23,847 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fa47b6e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b078b81 [2022-07-12 10:08:23,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:08:23,862 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2022-07-12 10:08:23,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:23,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:23,863 INFO L200 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] [2022-07-12 10:08:23,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1219813241, now seen corresponding path program 1 times [2022-07-12 10:08:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:23,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958318955] [2022-07-12 10:08:23,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:24,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958318955] [2022-07-12 10:08:24,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958318955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:24,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:24,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:08:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705061461] [2022-07-12 10:08:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:08:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:24,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:08:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:08:24,150 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 97 [2022-07-12 10:08:24,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-12 10:08:24,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:24,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 97 [2022-07-12 10:08:24,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:24,248 INFO L129 PetriNetUnfolder]: 31/182 cut-off events. [2022-07-12 10:08:24,248 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:08:24,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 182 events. 31/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 532 event pairs, 3 based on Foata normal form. 10/181 useless extension candidates. Maximal degree in co-relation 208. Up to 53 conditions per place. [2022-07-12 10:08:24,252 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 11 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-07-12 10:08:24,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 220 flow [2022-07-12 10:08:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:08:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:08:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-07-12 10:08:24,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9175257731958762 [2022-07-12 10:08:24,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2022-07-12 10:08:24,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2022-07-12 10:08:24,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:24,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2022-07-12 10:08:24,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-07-12 10:08:24,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-12 10:08:24,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-12 10:08:24,293 INFO L186 Difference]: Start difference. First operand has 100 places, 95 transitions, 196 flow. Second operand 3 states and 267 transitions. [2022-07-12 10:08:24,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 220 flow [2022-07-12 10:08:24,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:24,302 INFO L242 Difference]: Finished difference. Result has 98 places, 91 transitions, 190 flow [2022-07-12 10:08:24,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-07-12 10:08:24,306 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2022-07-12 10:08:24,307 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 190 flow [2022-07-12 10:08:24,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-12 10:08:24,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:24,308 INFO L200 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] [2022-07-12 10:08:24,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:08:24,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash -832897983, now seen corresponding path program 1 times [2022-07-12 10:08:24,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:24,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524619475] [2022-07-12 10:08:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:24,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:24,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524619475] [2022-07-12 10:08:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524619475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:24,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:24,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561710075] [2022-07-12 10:08:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:24,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:24,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2022-07-12 10:08:24,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-12 10:08:24,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:24,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2022-07-12 10:08:24,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:24,744 INFO L129 PetriNetUnfolder]: 103/417 cut-off events. [2022-07-12 10:08:24,744 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-07-12 10:08:24,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 417 events. 103/417 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2106 event pairs, 22 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 593. Up to 65 conditions per place. [2022-07-12 10:08:24,746 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 15 selfloop transitions, 2 changer transitions 37/120 dead transitions. [2022-07-12 10:08:24,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 344 flow [2022-07-12 10:08:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2022-07-12 10:08:24,749 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2022-07-12 10:08:24,749 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2022-07-12 10:08:24,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2022-07-12 10:08:24,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:24,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2022-07-12 10:08:24,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 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) [2022-07-12 10:08:24,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-12 10:08:24,754 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-12 10:08:24,754 INFO L186 Difference]: Start difference. First operand has 98 places, 91 transitions, 190 flow. Second operand 9 states and 740 transitions. [2022-07-12 10:08:24,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 344 flow [2022-07-12 10:08:24,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 120 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:24,757 INFO L242 Difference]: Finished difference. Result has 111 places, 81 transitions, 186 flow [2022-07-12 10:08:24,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-07-12 10:08:24,758 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-12 10:08:24,758 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 186 flow [2022-07-12 10:08:24,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-12 10:08:24,758 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:24,758 INFO L200 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] [2022-07-12 10:08:24,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:08:24,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash -56070386, now seen corresponding path program 1 times [2022-07-12 10:08:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:24,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037640048] [2022-07-12 10:08:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037640048] [2022-07-12 10:08:25,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037640048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:25,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:25,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:08:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972618492] [2022-07-12 10:08:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:08:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:08:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:08:25,131 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-12 10:08:25,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-12 10:08:25,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:25,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-12 10:08:25,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:25,446 INFO L129 PetriNetUnfolder]: 80/287 cut-off events. [2022-07-12 10:08:25,446 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-12 10:08:25,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 287 events. 80/287 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1095 event pairs, 39 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 504. Up to 107 conditions per place. [2022-07-12 10:08:25,448 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 22 selfloop transitions, 14 changer transitions 22/116 dead transitions. [2022-07-12 10:08:25,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 395 flow [2022-07-12 10:08:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:08:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:08:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-12 10:08:25,451 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-12 10:08:25,452 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-12 10:08:25,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-12 10:08:25,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:25,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-12 10:08:25,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-12 10:08:25,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-12 10:08:25,457 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-12 10:08:25,457 INFO L186 Difference]: Start difference. First operand has 111 places, 81 transitions, 186 flow. Second operand 16 states and 1164 transitions. [2022-07-12 10:08:25,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 395 flow [2022-07-12 10:08:25,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 361 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:25,461 INFO L242 Difference]: Finished difference. Result has 112 places, 89 transitions, 259 flow [2022-07-12 10:08:25,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=89} [2022-07-12 10:08:25,462 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2022-07-12 10:08:25,462 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 89 transitions, 259 flow [2022-07-12 10:08:25,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-12 10:08:25,462 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:25,462 INFO L200 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] [2022-07-12 10:08:25,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:08:25,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:25,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1657330500, now seen corresponding path program 1 times [2022-07-12 10:08:25,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:25,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047605273] [2022-07-12 10:08:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047605273] [2022-07-12 10:08:26,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047605273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:26,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:26,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:08:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990492404] [2022-07-12 10:08:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:08:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:26,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:08:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:08:26,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 97 [2022-07-12 10:08:26,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 89 transitions, 259 flow. Second operand has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-12 10:08:26,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:26,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 97 [2022-07-12 10:08:26,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:27,281 INFO L129 PetriNetUnfolder]: 235/634 cut-off events. [2022-07-12 10:08:27,281 INFO L130 PetriNetUnfolder]: For 444/446 co-relation queries the response was YES. [2022-07-12 10:08:27,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 634 events. 235/634 cut-off events. For 444/446 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3320 event pairs, 41 based on Foata normal form. 14/640 useless extension candidates. Maximal degree in co-relation 1427. Up to 148 conditions per place. [2022-07-12 10:08:27,285 INFO L132 encePairwiseOnDemand]: 78/97 looper letters, 51 selfloop transitions, 31 changer transitions 75/210 dead transitions. [2022-07-12 10:08:27,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 1030 flow [2022-07-12 10:08:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 10:08:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-12 10:08:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2649 transitions. [2022-07-12 10:08:27,290 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7002379064234734 [2022-07-12 10:08:27,290 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2649 transitions. [2022-07-12 10:08:27,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2649 transitions. [2022-07-12 10:08:27,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:27,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2649 transitions. [2022-07-12 10:08:27,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 67.92307692307692) internal successors, (2649), 39 states have internal predecessors, (2649), 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) [2022-07-12 10:08:27,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-12 10:08:27,300 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-12 10:08:27,301 INFO L186 Difference]: Start difference. First operand has 112 places, 89 transitions, 259 flow. Second operand 39 states and 2649 transitions. [2022-07-12 10:08:27,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 210 transitions, 1030 flow [2022-07-12 10:08:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 210 transitions, 978 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-07-12 10:08:27,306 INFO L242 Difference]: Finished difference. Result has 170 places, 114 transitions, 549 flow [2022-07-12 10:08:27,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=549, PETRI_PLACES=170, PETRI_TRANSITIONS=114} [2022-07-12 10:08:27,307 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 70 predicate places. [2022-07-12 10:08:27,307 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 114 transitions, 549 flow [2022-07-12 10:08:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-12 10:08:27,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:27,308 INFO L200 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] [2022-07-12 10:08:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:08:27,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2082412928, now seen corresponding path program 2 times [2022-07-12 10:08:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137740242] [2022-07-12 10:08:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:27,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:27,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137740242] [2022-07-12 10:08:27,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137740242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:27,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:27,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193406994] [2022-07-12 10:08:27,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:27,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:27,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-12 10:08:27,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 114 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-12 10:08:27,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:27,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-12 10:08:27,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:28,046 INFO L129 PetriNetUnfolder]: 82/308 cut-off events. [2022-07-12 10:08:28,046 INFO L130 PetriNetUnfolder]: For 1760/1797 co-relation queries the response was YES. [2022-07-12 10:08:28,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 308 events. 82/308 cut-off events. For 1760/1797 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1184 event pairs, 41 based on Foata normal form. 19/311 useless extension candidates. Maximal degree in co-relation 1021. Up to 108 conditions per place. [2022-07-12 10:08:28,049 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 27 selfloop transitions, 27 changer transitions 16/132 dead transitions. [2022-07-12 10:08:28,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 132 transitions, 845 flow [2022-07-12 10:08:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1069 transitions. [2022-07-12 10:08:28,053 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7347079037800688 [2022-07-12 10:08:28,053 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1069 transitions. [2022-07-12 10:08:28,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1069 transitions. [2022-07-12 10:08:28,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:28,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1069 transitions. [2022-07-12 10:08:28,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.26666666666667) internal successors, (1069), 15 states have internal predecessors, (1069), 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) [2022-07-12 10:08:28,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-12 10:08:28,057 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-12 10:08:28,057 INFO L186 Difference]: Start difference. First operand has 170 places, 114 transitions, 549 flow. Second operand 15 states and 1069 transitions. [2022-07-12 10:08:28,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 132 transitions, 845 flow [2022-07-12 10:08:28,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 723 flow, removed 57 selfloop flow, removed 25 redundant places. [2022-07-12 10:08:28,065 INFO L242 Difference]: Finished difference. Result has 142 places, 114 transitions, 573 flow [2022-07-12 10:08:28,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=573, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2022-07-12 10:08:28,068 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 42 predicate places. [2022-07-12 10:08:28,068 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 573 flow [2022-07-12 10:08:28,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-12 10:08:28,069 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:28,069 INFO L200 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] [2022-07-12 10:08:28,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:08:28,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1898009165, now seen corresponding path program 1 times [2022-07-12 10:08:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:28,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044753582] [2022-07-12 10:08:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:28,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:28,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044753582] [2022-07-12 10:08:28,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044753582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:28,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:28,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121589660] [2022-07-12 10:08:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:28,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:28,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-12 10:08:28,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-12 10:08:28,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:28,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-12 10:08:28,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:28,449 INFO L129 PetriNetUnfolder]: 237/609 cut-off events. [2022-07-12 10:08:28,450 INFO L130 PetriNetUnfolder]: For 1062/1068 co-relation queries the response was YES. [2022-07-12 10:08:28,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 609 events. 237/609 cut-off events. For 1062/1068 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3070 event pairs, 22 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 1727. Up to 112 conditions per place. [2022-07-12 10:08:28,453 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 34 selfloop transitions, 7 changer transitions 53/162 dead transitions. [2022-07-12 10:08:28,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 162 transitions, 957 flow [2022-07-12 10:08:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:08:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:08:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2022-07-12 10:08:28,456 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.845360824742268 [2022-07-12 10:08:28,456 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2022-07-12 10:08:28,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2022-07-12 10:08:28,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:28,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2022-07-12 10:08:28,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2022-07-12 10:08:28,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-12 10:08:28,460 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-12 10:08:28,460 INFO L186 Difference]: Start difference. First operand has 142 places, 114 transitions, 573 flow. Second operand 10 states and 820 transitions. [2022-07-12 10:08:28,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 162 transitions, 957 flow [2022-07-12 10:08:28,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 162 transitions, 840 flow, removed 20 selfloop flow, removed 24 redundant places. [2022-07-12 10:08:28,466 INFO L242 Difference]: Finished difference. Result has 125 places, 96 transitions, 355 flow [2022-07-12 10:08:28,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2022-07-12 10:08:28,468 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 25 predicate places. [2022-07-12 10:08:28,468 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 355 flow [2022-07-12 10:08:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-12 10:08:28,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:28,469 INFO L200 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] [2022-07-12 10:08:28,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:08:28,469 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:28,470 INFO L85 PathProgramCache]: Analyzing trace with hash 980599912, now seen corresponding path program 1 times [2022-07-12 10:08:28,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:28,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863310334] [2022-07-12 10:08:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:28,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863310334] [2022-07-12 10:08:28,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863310334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:28,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:28,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244767475] [2022-07-12 10:08:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:28,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:28,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:28,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:28,915 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-12 10:08:28,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 355 flow. Second operand has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-12 10:08:28,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:28,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-12 10:08:28,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:29,455 INFO L129 PetriNetUnfolder]: 55/377 cut-off events. [2022-07-12 10:08:29,455 INFO L130 PetriNetUnfolder]: For 423/429 co-relation queries the response was YES. [2022-07-12 10:08:29,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 377 events. 55/377 cut-off events. For 423/429 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1906 event pairs, 13 based on Foata normal form. 6/367 useless extension candidates. Maximal degree in co-relation 922. Up to 70 conditions per place. [2022-07-12 10:08:29,457 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 49 selfloop transitions, 15 changer transitions 9/134 dead transitions. [2022-07-12 10:08:29,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 676 flow [2022-07-12 10:08:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:08:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:08:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1016 transitions. [2022-07-12 10:08:29,460 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.748159057437408 [2022-07-12 10:08:29,460 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1016 transitions. [2022-07-12 10:08:29,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1016 transitions. [2022-07-12 10:08:29,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:29,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1016 transitions. [2022-07-12 10:08:29,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.57142857142857) internal successors, (1016), 14 states have internal predecessors, (1016), 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) [2022-07-12 10:08:29,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-12 10:08:29,466 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-12 10:08:29,466 INFO L186 Difference]: Start difference. First operand has 125 places, 96 transitions, 355 flow. Second operand 14 states and 1016 transitions. [2022-07-12 10:08:29,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 676 flow [2022-07-12 10:08:29,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 663 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-12 10:08:29,470 INFO L242 Difference]: Finished difference. Result has 134 places, 105 transitions, 438 flow [2022-07-12 10:08:29,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=438, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2022-07-12 10:08:29,471 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2022-07-12 10:08:29,471 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 438 flow [2022-07-12 10:08:29,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-12 10:08:29,472 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:29,472 INFO L200 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] [2022-07-12 10:08:29,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:08:29,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 520919172, now seen corresponding path program 2 times [2022-07-12 10:08:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:29,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305425223] [2022-07-12 10:08:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:29,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305425223] [2022-07-12 10:08:29,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305425223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:29,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:29,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:08:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927228915] [2022-07-12 10:08:29,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:29,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:08:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:08:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:08:29,800 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-12 10:08:29,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-12 10:08:29,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:29,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-12 10:08:29,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:30,789 INFO L129 PetriNetUnfolder]: 65/449 cut-off events. [2022-07-12 10:08:30,790 INFO L130 PetriNetUnfolder]: For 790/798 co-relation queries the response was YES. [2022-07-12 10:08:30,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 449 events. 65/449 cut-off events. For 790/798 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2548 event pairs, 18 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 1172. Up to 104 conditions per place. [2022-07-12 10:08:30,793 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 36 selfloop transitions, 27 changer transitions 10/135 dead transitions. [2022-07-12 10:08:30,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 135 transitions, 764 flow [2022-07-12 10:08:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:08:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:08:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-12 10:08:30,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-12 10:08:30,796 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-12 10:08:30,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-12 10:08:30,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:30,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-12 10:08:30,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-12 10:08:30,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-12 10:08:30,804 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-12 10:08:30,804 INFO L186 Difference]: Start difference. First operand has 134 places, 105 transitions, 438 flow. Second operand 16 states and 1164 transitions. [2022-07-12 10:08:30,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 135 transitions, 764 flow [2022-07-12 10:08:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 135 transitions, 735 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-12 10:08:30,808 INFO L242 Difference]: Finished difference. Result has 148 places, 115 transitions, 567 flow [2022-07-12 10:08:30,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=567, PETRI_PLACES=148, PETRI_TRANSITIONS=115} [2022-07-12 10:08:30,810 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 48 predicate places. [2022-07-12 10:08:30,810 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 115 transitions, 567 flow [2022-07-12 10:08:30,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-12 10:08:30,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:30,811 INFO L200 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] [2022-07-12 10:08:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:08:30,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 256124214, now seen corresponding path program 3 times [2022-07-12 10:08:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:30,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091468219] [2022-07-12 10:08:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:30,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:30,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091468219] [2022-07-12 10:08:30,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091468219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:30,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:30,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:30,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324764713] [2022-07-12 10:08:30,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:30,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:30,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:30,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-12 10:08:30,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 115 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2022-07-12 10:08:30,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:30,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-12 10:08:30,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:31,133 INFO L129 PetriNetUnfolder]: 166/587 cut-off events. [2022-07-12 10:08:31,133 INFO L130 PetriNetUnfolder]: For 1524/1526 co-relation queries the response was YES. [2022-07-12 10:08:31,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 587 events. 166/587 cut-off events. For 1524/1526 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3512 event pairs, 26 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 1966. Up to 105 conditions per place. [2022-07-12 10:08:31,136 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 44 selfloop transitions, 10 changer transitions 42/163 dead transitions. [2022-07-12 10:08:31,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 163 transitions, 1136 flow [2022-07-12 10:08:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:08:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:08:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 867 transitions. [2022-07-12 10:08:31,138 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8125585754451734 [2022-07-12 10:08:31,138 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 867 transitions. [2022-07-12 10:08:31,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 867 transitions. [2022-07-12 10:08:31,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:31,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 867 transitions. [2022-07-12 10:08:31,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.81818181818181) internal successors, (867), 11 states have internal predecessors, (867), 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) [2022-07-12 10:08:31,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-12 10:08:31,143 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-12 10:08:31,143 INFO L186 Difference]: Start difference. First operand has 148 places, 115 transitions, 567 flow. Second operand 11 states and 867 transitions. [2022-07-12 10:08:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 163 transitions, 1136 flow [2022-07-12 10:08:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 163 transitions, 883 flow, removed 108 selfloop flow, removed 19 redundant places. [2022-07-12 10:08:31,150 INFO L242 Difference]: Finished difference. Result has 139 places, 110 transitions, 460 flow [2022-07-12 10:08:31,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=460, PETRI_PLACES=139, PETRI_TRANSITIONS=110} [2022-07-12 10:08:31,151 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 39 predicate places. [2022-07-12 10:08:31,151 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 110 transitions, 460 flow [2022-07-12 10:08:31,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2022-07-12 10:08:31,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:31,151 INFO L200 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] [2022-07-12 10:08:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:08:31,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 313201364, now seen corresponding path program 1 times [2022-07-12 10:08:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:31,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619118866] [2022-07-12 10:08:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:31,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619118866] [2022-07-12 10:08:31,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619118866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:31,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:31,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:08:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552342097] [2022-07-12 10:08:31,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:31,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:08:31,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:08:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:08:31,996 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-12 10:08:31,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 110 transitions, 460 flow. Second operand has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-12 10:08:31,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:31,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-12 10:08:31,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:32,713 INFO L129 PetriNetUnfolder]: 17/240 cut-off events. [2022-07-12 10:08:32,713 INFO L130 PetriNetUnfolder]: For 291/296 co-relation queries the response was YES. [2022-07-12 10:08:32,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 240 events. 17/240 cut-off events. For 291/296 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 990 event pairs, 1 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-12 10:08:32,715 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 34 selfloop transitions, 12 changer transitions 10/119 dead transitions. [2022-07-12 10:08:32,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 119 transitions, 608 flow [2022-07-12 10:08:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:08:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:08:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 993 transitions. [2022-07-12 10:08:32,717 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7312223858615611 [2022-07-12 10:08:32,717 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 993 transitions. [2022-07-12 10:08:32,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 993 transitions. [2022-07-12 10:08:32,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:32,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 993 transitions. [2022-07-12 10:08:32,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 70.92857142857143) internal successors, (993), 14 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-12 10:08:32,720 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-12 10:08:32,720 INFO L186 Difference]: Start difference. First operand has 139 places, 110 transitions, 460 flow. Second operand 14 states and 993 transitions. [2022-07-12 10:08:32,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 119 transitions, 608 flow [2022-07-12 10:08:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 558 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-07-12 10:08:32,724 INFO L242 Difference]: Finished difference. Result has 143 places, 108 transitions, 444 flow [2022-07-12 10:08:32,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=444, PETRI_PLACES=143, PETRI_TRANSITIONS=108} [2022-07-12 10:08:32,724 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2022-07-12 10:08:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 108 transitions, 444 flow [2022-07-12 10:08:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-12 10:08:32,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:32,725 INFO L200 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] [2022-07-12 10:08:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:08:32,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash -538835402, now seen corresponding path program 2 times [2022-07-12 10:08:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:32,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514032965] [2022-07-12 10:08:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514032965] [2022-07-12 10:08:32,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514032965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:32,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:32,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140462750] [2022-07-12 10:08:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:32,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:32,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2022-07-12 10:08:32,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 108 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-12 10:08:32,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:32,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2022-07-12 10:08:32,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:32,936 INFO L129 PetriNetUnfolder]: 24/248 cut-off events. [2022-07-12 10:08:32,936 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-07-12 10:08:32,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 248 events. 24/248 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1043 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-12 10:08:32,937 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 16 selfloop transitions, 2 changer transitions 42/125 dead transitions. [2022-07-12 10:08:32,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 639 flow [2022-07-12 10:08:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:08:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:08:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-07-12 10:08:32,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8247422680412371 [2022-07-12 10:08:32,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-07-12 10:08:32,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-07-12 10:08:32,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:32,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-07-12 10:08:32,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 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) [2022-07-12 10:08:32,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-12 10:08:32,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-12 10:08:32,941 INFO L186 Difference]: Start difference. First operand has 143 places, 108 transitions, 444 flow. Second operand 6 states and 480 transitions. [2022-07-12 10:08:32,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 639 flow [2022-07-12 10:08:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 566 flow, removed 11 selfloop flow, removed 18 redundant places. [2022-07-12 10:08:32,944 INFO L242 Difference]: Finished difference. Result has 130 places, 82 transitions, 250 flow [2022-07-12 10:08:32,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=130, PETRI_TRANSITIONS=82} [2022-07-12 10:08:32,945 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 30 predicate places. [2022-07-12 10:08:32,945 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 82 transitions, 250 flow [2022-07-12 10:08:32,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-12 10:08:32,945 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:32,945 INFO L200 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] [2022-07-12 10:08:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:08:32,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:08:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1294883766, now seen corresponding path program 3 times [2022-07-12 10:08:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:32,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963855711] [2022-07-12 10:08:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963855711] [2022-07-12 10:08:33,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963855711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:33,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:33,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670130228] [2022-07-12 10:08:33,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:33,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:33,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:33,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:33,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-07-12 10:08:33,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 82 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-12 10:08:33,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:33,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-07-12 10:08:33,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:33,533 INFO L129 PetriNetUnfolder]: 2/85 cut-off events. [2022-07-12 10:08:33,533 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:08:33,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 85 events. 2/85 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 1 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-07-12 10:08:33,533 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-12 10:08:33,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 80 transitions, 294 flow [2022-07-12 10:08:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:08:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:08:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2022-07-12 10:08:33,534 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7027491408934707 [2022-07-12 10:08:33,534 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 818 transitions. [2022-07-12 10:08:33,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 818 transitions. [2022-07-12 10:08:33,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:33,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 818 transitions. [2022-07-12 10:08:33,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.16666666666667) internal successors, (818), 12 states have internal predecessors, (818), 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) [2022-07-12 10:08:33,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-12 10:08:33,537 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-12 10:08:33,537 INFO L186 Difference]: Start difference. First operand has 130 places, 82 transitions, 250 flow. Second operand 12 states and 818 transitions. [2022-07-12 10:08:33,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 80 transitions, 294 flow [2022-07-12 10:08:33,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 80 transitions, 231 flow, removed 11 selfloop flow, removed 23 redundant places. [2022-07-12 10:08:33,538 INFO L242 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2022-07-12 10:08:33,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2022-07-12 10:08:33,539 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2022-07-12 10:08:33,539 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2022-07-12 10:08:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-12 10:08:33,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 10:08:33,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:08:33,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:08:33,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-12 10:08:33,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:08:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:08:33,542 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-07-12 10:08:33,545 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:08:33,546 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:08:33,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:08:33 BasicIcfg [2022-07-12 10:08:33,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:08:33,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:08:33,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:08:33,549 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:08:33,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:23" (3/4) ... [2022-07-12 10:08:33,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:08:33,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:08:33,554 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:08:33,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2022-07-12 10:08:33,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-12 10:08:33,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-12 10:08:33,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:08:33,639 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:08:33,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:08:33,639 INFO L158 Benchmark]: Toolchain (without parser) took 11462.83ms. Allocated memory was 90.2MB in the beginning and 346.0MB in the end (delta: 255.9MB). Free memory was 66.5MB in the beginning and 115.9MB in the end (delta: -49.4MB). Peak memory consumption was 206.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,639 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:08:33,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.34ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 41.5MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.37ms. Allocated memory is still 90.2MB. Free memory was 41.5MB in the beginning and 37.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,641 INFO L158 Benchmark]: Boogie Preprocessor took 58.31ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 37.7MB in the beginning and 89.0MB in the end (delta: -51.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,642 INFO L158 Benchmark]: RCFGBuilder took 1041.93ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 89.0MB in the beginning and 117.6MB in the end (delta: -28.7MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,642 INFO L158 Benchmark]: TraceAbstraction took 9863.17ms. Allocated memory was 155.2MB in the beginning and 346.0MB in the end (delta: 190.8MB). Free memory was 116.6MB in the beginning and 120.1MB in the end (delta: -3.5MB). Peak memory consumption was 187.3MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,642 INFO L158 Benchmark]: Witness Printer took 89.84ms. Allocated memory is still 346.0MB. Free memory was 120.1MB in the beginning and 115.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:33,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.34ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 41.5MB in the end (delta: 24.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.37ms. Allocated memory is still 90.2MB. Free memory was 41.5MB in the beginning and 37.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.31ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 37.7MB in the beginning and 89.0MB in the end (delta: -51.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1041.93ms. Allocated memory was 115.3MB in the beginning and 155.2MB in the end (delta: 39.8MB). Free memory was 89.0MB in the beginning and 117.6MB in the end (delta: -28.7MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9863.17ms. Allocated memory was 155.2MB in the beginning and 346.0MB in the end (delta: 190.8MB). Free memory was 116.6MB in the beginning and 120.1MB in the end (delta: -3.5MB). Peak memory consumption was 187.3MB. Max. memory is 16.1GB. * Witness Printer took 89.84ms. Allocated memory is still 346.0MB. Free memory was 120.1MB in the beginning and 115.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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 5 procedures, 117 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: 9.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 566 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 762 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 990 mSDsCounter, 223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1913 IncrementalHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 223 mSolverCounterUnsat, 136 mSDtfsCounter, 1913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=5, InterpolantAutomatonStates: 165, 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, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 841 NumberOfCodeBlocks, 841 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 829 ConstructedInterpolants, 0 QuantifiedInterpolants, 6976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:08:33,685 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