./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/pthread-wmm/rfi002_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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:53:33,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:53:33,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:53:33,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:53:33,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:53:33,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:53:33,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:53:33,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:53:33,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:53:33,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:53:33,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:53:33,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:53:33,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:53:33,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:53:33,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:53:33,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:53:33,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:53:33,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:53:33,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:53:33,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:53:33,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:53:33,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:53:33,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:53:33,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:53:33,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:53:33,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:53:33,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:53:33,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:53:33,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:53:33,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:53:33,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:53:33,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:53:33,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:53:33,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:53:33,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:53:33,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:53:33,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:53:33,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:53:33,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:53:33,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:53:33,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:53:33,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:53:33,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:53:33,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:53:33,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:53:33,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:53:33,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:53:33,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:53:33,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:53:33,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:53:33,889 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:53:33,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:53:33,890 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:53:33,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:53:33,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:53:33,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:53:33,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:53:33,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:53:33,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:53:33,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:53:33,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:53:33,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:33,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:53:33,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:53:33,894 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:53:33,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:53:33,894 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:53:33,894 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:53:34,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:53:34,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:53:34,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:53:34,172 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:53:34,173 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:53:34,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-30 16:53:35,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:53:35,233 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:53:35,234 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-30 16:53:35,252 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55206bb20/fba68090f0e0440ab5aa64b0cad6458c/FLAGbc9a0b7a2 [2023-08-30 16:53:35,261 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55206bb20/fba68090f0e0440ab5aa64b0cad6458c [2023-08-30 16:53:35,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:53:35,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:53:35,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:35,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:53:35,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:53:35,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3971f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35, skipping insertion in model container [2023-08-30 16:53:35,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:53:35,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:53:35,454 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-08-30 16:53:35,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:35,674 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:53:35,683 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-08-30 16:53:35,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:53:35,810 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:35,810 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:53:35,815 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:53:35,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35 WrapperNode [2023-08-30 16:53:35,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:53:35,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:35,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:53:35,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:53:35,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,877 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-30 16:53:35,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:53:35,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:53:35,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:53:35,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:53:35,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:53:35,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:53:35,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:53:35,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:53:35,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (1/1) ... [2023-08-30 16:53:35,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:53:35,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:53:35,953 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) [2023-08-30 16:53:35,960 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 [2023-08-30 16:53:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:53:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:53:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:53:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:53:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:53:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:53:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:53:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:53:35,978 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:53:36,061 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:53:36,062 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:53:36,428 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:53:36,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:53:36,599 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:53:36,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:36 BoogieIcfgContainer [2023-08-30 16:53:36,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:53:36,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:53:36,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:53:36,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:53:36,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:53:35" (1/3) ... [2023-08-30 16:53:36,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6992b677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:36, skipping insertion in model container [2023-08-30 16:53:36,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:53:35" (2/3) ... [2023-08-30 16:53:36,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6992b677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:53:36, skipping insertion in model container [2023-08-30 16:53:36,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:36" (3/3) ... [2023-08-30 16:53:36,607 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-08-30 16:53:36,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:53:36,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:53:36,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 16:53:36,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:53:36,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:53:36,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2023-08-30 16:53:36,738 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-08-30 16:53:36,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-30 16:53:36,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 224 flow [2023-08-30 16:53:36,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 216 flow [2023-08-30 16:53:36,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:53:36,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 216 flow [2023-08-30 16:53:36,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 216 flow [2023-08-30 16:53:36,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 216 flow [2023-08-30 16:53:36,782 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-08-30 16:53:36,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:36,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-30 16:53:36,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 1314 [2023-08-30 16:53:40,991 INFO L134 LiptonReduction]: Checked pairs total: 4349 [2023-08-30 16:53:40,992 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-30 16:53:41,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:53:41,004 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7cab034, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:53:41,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 16:53:41,007 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 16:53:41,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:53:41,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:41,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 16:53:41,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:41,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash 599221769, now seen corresponding path program 1 times [2023-08-30 16:53:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951819450] [2023-08-30 16:53:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:41,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:41,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951819450] [2023-08-30 16:53:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951819450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:41,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:41,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:53:41,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249603835] [2023-08-30 16:53:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:41,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-30 16:53:41,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-30 16:53:41,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:41,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-30 16:53:41,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:41,519 INFO L130 PetriNetUnfolder]: 373/626 cut-off events. [2023-08-30 16:53:41,519 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 16:53:41,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2526 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-08-30 16:53:41,526 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-30 16:53:41,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-08-30 16:53:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 16:53:41,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-08-30 16:53:41,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 16:53:41,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 16:53:41,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:41,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 16:53:41,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2023-08-30 16:53:41,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:41,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:41,552 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 297 transitions. [2023-08-30 16:53:41,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-08-30 16:53:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:41,555 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-08-30 16:53:41,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-30 16:53:41,559 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 16:53:41,559 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-08-30 16:53:41,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-08-30 16:53:41,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:41,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 16:53:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:53:41,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:41,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1396006180, now seen corresponding path program 1 times [2023-08-30 16:53:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853320023] [2023-08-30 16:53:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:41,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853320023] [2023-08-30 16:53:41,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853320023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:41,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:53:41,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847789947] [2023-08-30 16:53:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:41,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:41,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-30 16:53:41,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2023-08-30 16:53:41,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:41,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-30 16:53:41,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:41,841 INFO L130 PetriNetUnfolder]: 324/547 cut-off events. [2023-08-30 16:53:41,842 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 16:53:41,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2057 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-08-30 16:53:41,843 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-08-30 16:53:41,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-08-30 16:53:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-30 16:53:41,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-08-30 16:53:41,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-30 16:53:41,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-30 16:53:41,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:41,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-30 16:53:41,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-08-30 16:53:41,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:41,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:41,848 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-08-30 16:53:41,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-08-30 16:53:41,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:41,849 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-08-30 16:53:41,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-30 16:53:41,850 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-30 16:53:41,850 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-08-30 16:53:41,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2023-08-30 16:53:41,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:41,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:41,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:53:41,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:41,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash 326571041, now seen corresponding path program 1 times [2023-08-30 16:53:41,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:41,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825713116] [2023-08-30 16:53:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:42,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825713116] [2023-08-30 16:53:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825713116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:42,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:42,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:53:42,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907221647] [2023-08-30 16:53:42,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:42,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:53:42,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:53:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:53:42,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-08-30 16:53:42,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2023-08-30 16:53:42,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:42,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-08-30 16:53:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:42,480 INFO L130 PetriNetUnfolder]: 220/383 cut-off events. [2023-08-30 16:53:42,480 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 16:53:42,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 383 events. 220/383 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1271 event pairs, 92 based on Foata normal form. 18/401 useless extension candidates. Maximal degree in co-relation 792. Up to 243 conditions per place. [2023-08-30 16:53:42,481 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-30 16:53:42,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 108 flow [2023-08-30 16:53:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-30 16:53:42,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451559934318555 [2023-08-30 16:53:42,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-30 16:53:42,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-30 16:53:42,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:42,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-30 16:53:42,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-08-30 16:53:42,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:42,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:42,486 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 275 transitions. [2023-08-30 16:53:42,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 108 flow [2023-08-30 16:53:42,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:42,487 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-08-30 16:53:42,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-30 16:53:42,488 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-30 16:53:42,490 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-08-30 16:53:42,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2023-08-30 16:53:42,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:42,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:53:42,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:42,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -705669376, now seen corresponding path program 1 times [2023-08-30 16:53:42,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:42,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945516708] [2023-08-30 16:53:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:42,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:42,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:42,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945516708] [2023-08-30 16:53:42,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945516708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:42,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:42,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:53:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960926105] [2023-08-30 16:53:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:53:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:53:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:53:42,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-30 16:53:42,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-08-30 16:53:42,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:42,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-30 16:53:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:42,825 INFO L130 PetriNetUnfolder]: 199/350 cut-off events. [2023-08-30 16:53:42,826 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 16:53:42,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 350 events. 199/350 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1237 event pairs, 88 based on Foata normal form. 12/362 useless extension candidates. Maximal degree in co-relation 756. Up to 201 conditions per place. [2023-08-30 16:53:42,828 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 16:53:42,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 129 flow [2023-08-30 16:53:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:53:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:53:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-30 16:53:42,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-08-30 16:53:42,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-30 16:53:42,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-30 16:53:42,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:42,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-30 16:53:42,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-08-30 16:53:42,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:42,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-08-30 16:53:42,834 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-08-30 16:53:42,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 129 flow [2023-08-30 16:53:42,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:42,836 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-08-30 16:53:42,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 16:53:42,837 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 16:53:42,838 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-08-30 16:53:42,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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) [2023-08-30 16:53:42,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:42,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:53:42,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:42,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1604901205, now seen corresponding path program 1 times [2023-08-30 16:53:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18684864] [2023-08-30 16:53:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18684864] [2023-08-30 16:53:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18684864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783334682] [2023-08-30 16:53:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:43,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:44,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 203 [2023-08-30 16:53:44,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:44,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:44,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 203 [2023-08-30 16:53:44,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:44,377 INFO L130 PetriNetUnfolder]: 290/526 cut-off events. [2023-08-30 16:53:44,378 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 16:53:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 526 events. 290/526 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2127 event pairs, 33 based on Foata normal form. 4/530 useless extension candidates. Maximal degree in co-relation 1202. Up to 240 conditions per place. [2023-08-30 16:53:44,380 INFO L137 encePairwiseOnDemand]: 191/203 looper letters, 53 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2023-08-30 16:53:44,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 81 transitions, 363 flow [2023-08-30 16:53:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 16:53:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 16:53:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 929 transitions. [2023-08-30 16:53:44,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41603224361845054 [2023-08-30 16:53:44,382 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 929 transitions. [2023-08-30 16:53:44,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 929 transitions. [2023-08-30 16:53:44,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:44,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 929 transitions. [2023-08-30 16:53:44,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.45454545454545) internal successors, (929), 11 states have internal predecessors, (929), 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) [2023-08-30 16:53:44,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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) [2023-08-30 16:53:44,388 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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) [2023-08-30 16:53:44,388 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 11 states and 929 transitions. [2023-08-30 16:53:44,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 81 transitions, 363 flow [2023-08-30 16:53:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 81 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:44,389 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 253 flow [2023-08-30 16:53:44,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=253, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-08-30 16:53:44,390 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2023-08-30 16:53:44,390 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 253 flow [2023-08-30 16:53:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:44,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:44,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:53:44,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:44,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1730083433, now seen corresponding path program 2 times [2023-08-30 16:53:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084910916] [2023-08-30 16:53:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:44,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084910916] [2023-08-30 16:53:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084910916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:45,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:53:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441641688] [2023-08-30 16:53:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:45,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:53:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:53:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:53:45,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 203 [2023-08-30 16:53:45,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 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) [2023-08-30 16:53:45,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:45,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 203 [2023-08-30 16:53:45,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:45,500 INFO L130 PetriNetUnfolder]: 361/655 cut-off events. [2023-08-30 16:53:45,500 INFO L131 PetriNetUnfolder]: For 1039/1039 co-relation queries the response was YES. [2023-08-30 16:53:45,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402 conditions, 655 events. 361/655 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2891 event pairs, 63 based on Foata normal form. 6/661 useless extension candidates. Maximal degree in co-relation 2383. Up to 502 conditions per place. [2023-08-30 16:53:45,504 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 66 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2023-08-30 16:53:45,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 617 flow [2023-08-30 16:53:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:53:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:53:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-08-30 16:53:45,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46798029556650245 [2023-08-30 16:53:45,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-08-30 16:53:45,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-08-30 16:53:45,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:45,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-08-30 16:53:45,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2023-08-30 16:53:45,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:45,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:45,510 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 253 flow. Second operand 5 states and 475 transitions. [2023-08-30 16:53:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 617 flow [2023-08-30 16:53:45,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:53:45,517 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 420 flow [2023-08-30 16:53:45,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-08-30 16:53:45,519 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2023-08-30 16:53:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 420 flow [2023-08-30 16:53:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 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) [2023-08-30 16:53:45,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:45,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:53:45,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:45,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1857559315, now seen corresponding path program 3 times [2023-08-30 16:53:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925093987] [2023-08-30 16:53:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:45,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:46,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925093987] [2023-08-30 16:53:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925093987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:46,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:46,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:46,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308778377] [2023-08-30 16:53:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:46,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-08-30 16:53:46,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 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) [2023-08-30 16:53:46,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:46,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-08-30 16:53:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:46,398 INFO L130 PetriNetUnfolder]: 385/695 cut-off events. [2023-08-30 16:53:46,398 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-08-30 16:53:46,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 695 events. 385/695 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3126 event pairs, 33 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2868. Up to 464 conditions per place. [2023-08-30 16:53:46,402 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 35 changer transitions 0/106 dead transitions. [2023-08-30 16:53:46,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 106 transitions, 881 flow [2023-08-30 16:53:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:53:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:53:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-30 16:53:46,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573070607553366 [2023-08-30 16:53:46,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-30 16:53:46,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-30 16:53:46,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:46,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-30 16:53:46,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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) [2023-08-30 16:53:46,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-08-30 16:53:46,408 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-08-30 16:53:46,408 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 420 flow. Second operand 6 states and 557 transitions. [2023-08-30 16:53:46,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 106 transitions, 881 flow [2023-08-30 16:53:46,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 862 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 16:53:46,413 INFO L231 Difference]: Finished difference. Result has 54 places, 76 transitions, 625 flow [2023-08-30 16:53:46,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=54, PETRI_TRANSITIONS=76} [2023-08-30 16:53:46,413 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-08-30 16:53:46,413 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 76 transitions, 625 flow [2023-08-30 16:53:46,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 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) [2023-08-30 16:53:46,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:46,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:46,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:53:46,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:46,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash -134657145, now seen corresponding path program 4 times [2023-08-30 16:53:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:46,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438019635] [2023-08-30 16:53:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:47,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438019635] [2023-08-30 16:53:47,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438019635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:47,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:47,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:53:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232326484] [2023-08-30 16:53:47,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:47,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:53:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:53:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:53:47,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2023-08-30 16:53:47,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 76 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2023-08-30 16:53:47,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:47,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2023-08-30 16:53:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:47,509 INFO L130 PetriNetUnfolder]: 457/828 cut-off events. [2023-08-30 16:53:47,509 INFO L131 PetriNetUnfolder]: For 2582/2582 co-relation queries the response was YES. [2023-08-30 16:53:47,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 828 events. 457/828 cut-off events. For 2582/2582 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3957 event pairs, 131 based on Foata normal form. 6/834 useless extension candidates. Maximal degree in co-relation 3776. Up to 611 conditions per place. [2023-08-30 16:53:47,514 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 103 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2023-08-30 16:53:47,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 1227 flow [2023-08-30 16:53:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-08-30 16:53:47,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43490499648135117 [2023-08-30 16:53:47,517 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-08-30 16:53:47,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-08-30 16:53:47,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:47,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-08-30 16:53:47,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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) [2023-08-30 16:53:47,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-08-30 16:53:47,520 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-08-30 16:53:47,520 INFO L175 Difference]: Start difference. First operand has 54 places, 76 transitions, 625 flow. Second operand 7 states and 618 transitions. [2023-08-30 16:53:47,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 1227 flow [2023-08-30 16:53:47,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 1210 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:47,529 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 800 flow [2023-08-30 16:53:47,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-08-30 16:53:47,531 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2023-08-30 16:53:47,531 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 800 flow [2023-08-30 16:53:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2023-08-30 16:53:47,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:47,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:47,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:53:47,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:47,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 635368993, now seen corresponding path program 5 times [2023-08-30 16:53:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898846629] [2023-08-30 16:53:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898846629] [2023-08-30 16:53:48,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898846629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:48,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044537370] [2023-08-30 16:53:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:48,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-08-30 16:53:48,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 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) [2023-08-30 16:53:48,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:48,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-08-30 16:53:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:48,619 INFO L130 PetriNetUnfolder]: 509/949 cut-off events. [2023-08-30 16:53:48,620 INFO L131 PetriNetUnfolder]: For 3929/3929 co-relation queries the response was YES. [2023-08-30 16:53:48,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4567 conditions, 949 events. 509/949 cut-off events. For 3929/3929 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4797 event pairs, 64 based on Foata normal form. 36/985 useless extension candidates. Maximal degree in co-relation 4536. Up to 543 conditions per place. [2023-08-30 16:53:48,625 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 83 selfloop transitions, 29 changer transitions 4/116 dead transitions. [2023-08-30 16:53:48,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1208 flow [2023-08-30 16:53:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:53:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:53:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2023-08-30 16:53:48,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405348346235046 [2023-08-30 16:53:48,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2023-08-30 16:53:48,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2023-08-30 16:53:48,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:48,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2023-08-30 16:53:48,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:53:48,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-08-30 16:53:48,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-08-30 16:53:48,631 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 800 flow. Second operand 7 states and 631 transitions. [2023-08-30 16:53:48,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1208 flow [2023-08-30 16:53:48,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 116 transitions, 1169 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:48,641 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 897 flow [2023-08-30 16:53:48,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2023-08-30 16:53:48,641 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-08-30 16:53:48,641 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 897 flow [2023-08-30 16:53:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 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) [2023-08-30 16:53:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:53:48,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:48,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1689299816, now seen corresponding path program 1 times [2023-08-30 16:53:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491935826] [2023-08-30 16:53:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:49,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:49,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491935826] [2023-08-30 16:53:49,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491935826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:49,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:49,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:53:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866078627] [2023-08-30 16:53:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:49,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:53:49,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:53:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:53:49,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 203 [2023-08-30 16:53:49,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 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) [2023-08-30 16:53:49,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:49,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 203 [2023-08-30 16:53:49,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:49,323 INFO L130 PetriNetUnfolder]: 579/1103 cut-off events. [2023-08-30 16:53:49,323 INFO L131 PetriNetUnfolder]: For 5915/5915 co-relation queries the response was YES. [2023-08-30 16:53:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1103 events. 579/1103 cut-off events. For 5915/5915 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5895 event pairs, 115 based on Foata normal form. 18/1121 useless extension candidates. Maximal degree in co-relation 5538. Up to 542 conditions per place. [2023-08-30 16:53:49,328 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 64 selfloop transitions, 24 changer transitions 31/119 dead transitions. [2023-08-30 16:53:49,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 1347 flow [2023-08-30 16:53:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:53:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:53:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2023-08-30 16:53:49,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660098522167488 [2023-08-30 16:53:49,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2023-08-30 16:53:49,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2023-08-30 16:53:49,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:49,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2023-08-30 16:53:49,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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) [2023-08-30 16:53:49,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:49,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:49,333 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 897 flow. Second operand 5 states and 473 transitions. [2023-08-30 16:53:49,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 1347 flow [2023-08-30 16:53:49,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 1309 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 16:53:49,346 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 743 flow [2023-08-30 16:53:49,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-08-30 16:53:49,347 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-08-30 16:53:49,347 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 743 flow [2023-08-30 16:53:49,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 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) [2023-08-30 16:53:49,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:49,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:53:49,349 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:49,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1757307124, now seen corresponding path program 2 times [2023-08-30 16:53:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194047764] [2023-08-30 16:53:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194047764] [2023-08-30 16:53:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194047764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:49,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:49,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:53:49,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087573387] [2023-08-30 16:53:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:49,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:53:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:53:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:53:49,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-08-30 16:53:49,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2023-08-30 16:53:49,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:49,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-08-30 16:53:49,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:50,205 INFO L130 PetriNetUnfolder]: 394/753 cut-off events. [2023-08-30 16:53:50,205 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-08-30 16:53:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 753 events. 394/753 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3666 event pairs, 79 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 3788. Up to 627 conditions per place. [2023-08-30 16:53:50,210 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 71 selfloop transitions, 20 changer transitions 4/95 dead transitions. [2023-08-30 16:53:50,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 1067 flow [2023-08-30 16:53:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:53:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:53:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2023-08-30 16:53:50,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073891625615764 [2023-08-30 16:53:50,212 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2023-08-30 16:53:50,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2023-08-30 16:53:50,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:50,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2023-08-30 16:53:50,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2023-08-30 16:53:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-08-30 16:53:50,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-08-30 16:53:50,215 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 743 flow. Second operand 6 states and 549 transitions. [2023-08-30 16:53:50,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 1067 flow [2023-08-30 16:53:50,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1013 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 16:53:50,222 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 769 flow [2023-08-30 16:53:50,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-08-30 16:53:50,223 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-08-30 16:53:50,223 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 769 flow [2023-08-30 16:53:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2023-08-30 16:53:50,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:50,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:50,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:53:50,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:50,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1589283996, now seen corresponding path program 1 times [2023-08-30 16:53:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261093463] [2023-08-30 16:53:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261093463] [2023-08-30 16:53:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261093463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:50,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:53:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365762958] [2023-08-30 16:53:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:53:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:53:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:53:50,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-08-30 16:53:50,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2023-08-30 16:53:50,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:50,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-08-30 16:53:50,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:50,918 INFO L130 PetriNetUnfolder]: 400/779 cut-off events. [2023-08-30 16:53:50,918 INFO L131 PetriNetUnfolder]: For 5084/5084 co-relation queries the response was YES. [2023-08-30 16:53:50,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 779 events. 400/779 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3899 event pairs, 69 based on Foata normal form. 16/795 useless extension candidates. Maximal degree in co-relation 4058. Up to 448 conditions per place. [2023-08-30 16:53:50,924 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 89 selfloop transitions, 47 changer transitions 11/147 dead transitions. [2023-08-30 16:53:50,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 147 transitions, 1643 flow [2023-08-30 16:53:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:53:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:53:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2023-08-30 16:53:50,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45566502463054187 [2023-08-30 16:53:50,927 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2023-08-30 16:53:50,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2023-08-30 16:53:50,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:50,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2023-08-30 16:53:50,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 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) [2023-08-30 16:53:50,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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) [2023-08-30 16:53:50,931 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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) [2023-08-30 16:53:50,931 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 769 flow. Second operand 8 states and 740 transitions. [2023-08-30 16:53:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 147 transitions, 1643 flow [2023-08-30 16:53:50,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 16:53:50,940 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 1220 flow [2023-08-30 16:53:50,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1220, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-08-30 16:53:50,941 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-08-30 16:53:50,941 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 1220 flow [2023-08-30 16:53:50,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 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) [2023-08-30 16:53:50,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:50,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:50,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:53:50,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:50,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1358056236, now seen corresponding path program 2 times [2023-08-30 16:53:50,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:50,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658418104] [2023-08-30 16:53:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658418104] [2023-08-30 16:53:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658418104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:51,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 16:53:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054369654] [2023-08-30 16:53:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 16:53:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 16:53:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 16:53:51,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 203 [2023-08-30 16:53:51,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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) [2023-08-30 16:53:51,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:51,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 203 [2023-08-30 16:53:51,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:52,412 INFO L130 PetriNetUnfolder]: 378/746 cut-off events. [2023-08-30 16:53:52,412 INFO L131 PetriNetUnfolder]: For 5946/5946 co-relation queries the response was YES. [2023-08-30 16:53:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4258 conditions, 746 events. 378/746 cut-off events. For 5946/5946 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3756 event pairs, 66 based on Foata normal form. 16/762 useless extension candidates. Maximal degree in co-relation 4221. Up to 481 conditions per place. [2023-08-30 16:53:52,417 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 82 changer transitions 14/183 dead transitions. [2023-08-30 16:53:52,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 183 transitions, 2269 flow [2023-08-30 16:53:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 16:53:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 16:53:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1239 transitions. [2023-08-30 16:53:52,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-30 16:53:52,421 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1239 transitions. [2023-08-30 16:53:52,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1239 transitions. [2023-08-30 16:53:52,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:52,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1239 transitions. [2023-08-30 16:53:52,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 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) [2023-08-30 16:53:52,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 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) [2023-08-30 16:53:52,427 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 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) [2023-08-30 16:53:52,427 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 1220 flow. Second operand 15 states and 1239 transitions. [2023-08-30 16:53:52,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 183 transitions, 2269 flow [2023-08-30 16:53:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 2187 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-08-30 16:53:52,444 INFO L231 Difference]: Finished difference. Result has 97 places, 142 transitions, 1860 flow [2023-08-30 16:53:52,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1860, PETRI_PLACES=97, PETRI_TRANSITIONS=142} [2023-08-30 16:53:52,445 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 69 predicate places. [2023-08-30 16:53:52,445 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 142 transitions, 1860 flow [2023-08-30 16:53:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 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) [2023-08-30 16:53:52,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:52,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 16:53:52,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:52,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash -267089210, now seen corresponding path program 3 times [2023-08-30 16:53:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:52,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922084163] [2023-08-30 16:53:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:53,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922084163] [2023-08-30 16:53:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922084163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:53,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025846887] [2023-08-30 16:53:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:53,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:53,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-08-30 16:53:53,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 142 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 80.875) internal successors, (647), 8 states have internal predecessors, (647), 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) [2023-08-30 16:53:53,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:53,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-08-30 16:53:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:53,597 INFO L130 PetriNetUnfolder]: 440/880 cut-off events. [2023-08-30 16:53:53,597 INFO L131 PetriNetUnfolder]: For 7018/7018 co-relation queries the response was YES. [2023-08-30 16:53:53,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 880 events. 440/880 cut-off events. For 7018/7018 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4741 event pairs, 57 based on Foata normal form. 16/896 useless extension candidates. Maximal degree in co-relation 5258. Up to 446 conditions per place. [2023-08-30 16:53:53,603 INFO L137 encePairwiseOnDemand]: 193/203 looper letters, 87 selfloop transitions, 66 changer transitions 39/192 dead transitions. [2023-08-30 16:53:53,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 192 transitions, 2696 flow [2023-08-30 16:53:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:53:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:53:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2023-08-30 16:53:53,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42309797482211275 [2023-08-30 16:53:53,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2023-08-30 16:53:53,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2023-08-30 16:53:53,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:53,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2023-08-30 16:53:53,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 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) [2023-08-30 16:53:53,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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) [2023-08-30 16:53:53,609 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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) [2023-08-30 16:53:53,609 INFO L175 Difference]: Start difference. First operand has 97 places, 142 transitions, 1860 flow. Second operand 9 states and 773 transitions. [2023-08-30 16:53:53,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 192 transitions, 2696 flow [2023-08-30 16:53:53,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 192 transitions, 2566 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-08-30 16:53:53,629 INFO L231 Difference]: Finished difference. Result has 106 places, 132 transitions, 1844 flow [2023-08-30 16:53:53,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=106, PETRI_TRANSITIONS=132} [2023-08-30 16:53:53,630 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-30 16:53:53,630 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 132 transitions, 1844 flow [2023-08-30 16:53:53,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.875) internal successors, (647), 8 states have internal predecessors, (647), 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) [2023-08-30 16:53:53,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:53:53,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:53:53,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 16:53:53,631 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 16:53:53,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:53:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 637891837, now seen corresponding path program 1 times [2023-08-30 16:53:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:53:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039734008] [2023-08-30 16:53:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:53:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:53:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:53:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:53:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:53:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039734008] [2023-08-30 16:53:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039734008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:53:54,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:53:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:53:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291363833] [2023-08-30 16:53:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:53:54,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:53:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:53:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:53:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:53:54,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 203 [2023-08-30 16:53:54,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 132 transitions, 1844 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 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) [2023-08-30 16:53:54,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:53:54,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 203 [2023-08-30 16:53:54,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:53:54,350 INFO L130 PetriNetUnfolder]: 324/642 cut-off events. [2023-08-30 16:53:54,350 INFO L131 PetriNetUnfolder]: For 5744/5744 co-relation queries the response was YES. [2023-08-30 16:53:54,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 642 events. 324/642 cut-off events. For 5744/5744 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3163 event pairs, 52 based on Foata normal form. 16/658 useless extension candidates. Maximal degree in co-relation 4072. Up to 464 conditions per place. [2023-08-30 16:53:54,353 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 0 selfloop transitions, 0 changer transitions 139/139 dead transitions. [2023-08-30 16:53:54,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 2158 flow [2023-08-30 16:53:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:53:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:53:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-30 16:53:54,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-08-30 16:53:54,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-30 16:53:54,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-30 16:53:54,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:53:54,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-30 16:53:54,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-08-30 16:53:54,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:54,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-30 16:53:54,358 INFO L175 Difference]: Start difference. First operand has 106 places, 132 transitions, 1844 flow. Second operand 5 states and 455 transitions. [2023-08-30 16:53:54,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 2158 flow [2023-08-30 16:53:54,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 2072 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-30 16:53:54,374 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-08-30 16:53:54,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-08-30 16:53:54,375 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2023-08-30 16:53:54,375 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-08-30 16:53:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 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) [2023-08-30 16:53:54,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 16:53:54,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 16:53:54,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-30 16:53:54,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-30 16:53:54,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-30 16:53:54,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-30 16:53:54,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 16:53:54,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 16:53:54,378 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-08-30 16:53:54,383 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:53:54,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:53:54,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:53:54 BasicIcfg [2023-08-30 16:53:54,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:53:54,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:53:54,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:53:54,386 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:53:54,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:53:36" (3/4) ... [2023-08-30 16:53:54,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:53:54,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:53:54,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:53:54,396 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-08-30 16:53:54,397 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-30 16:53:54,397 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:53:54,398 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:53:54,428 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:53:54,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:53:54,429 INFO L158 Benchmark]: Toolchain (without parser) took 19165.35ms. Allocated memory was 81.8MB in the beginning and 499.1MB in the end (delta: 417.3MB). Free memory was 58.3MB in the beginning and 244.4MB in the end (delta: -186.2MB). Peak memory consumption was 232.4MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,429 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:53:54,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.04ms. Allocated memory is still 81.8MB. Free memory was 58.1MB in the beginning and 51.0MB in the end (delta: 7.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.41ms. Allocated memory is still 81.8MB. Free memory was 51.0MB in the beginning and 47.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,430 INFO L158 Benchmark]: Boogie Preprocessor took 51.44ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 44.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,430 INFO L158 Benchmark]: RCFGBuilder took 670.89ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 44.7MB in the beginning and 78.4MB in the end (delta: -33.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,430 INFO L158 Benchmark]: TraceAbstraction took 17783.12ms. Allocated memory was 107.0MB in the beginning and 499.1MB in the end (delta: 392.2MB). Free memory was 77.6MB in the beginning and 247.6MB in the end (delta: -170.0MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,431 INFO L158 Benchmark]: Witness Printer took 42.57ms. Allocated memory is still 499.1MB. Free memory was 247.6MB in the beginning and 244.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:53:54,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.04ms. Allocated memory is still 81.8MB. Free memory was 58.1MB in the beginning and 51.0MB in the end (delta: 7.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.41ms. Allocated memory is still 81.8MB. Free memory was 51.0MB in the beginning and 47.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.44ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 44.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 670.89ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 44.7MB in the beginning and 78.4MB in the end (delta: -33.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17783.12ms. Allocated memory was 107.0MB in the beginning and 499.1MB in the end (delta: 392.2MB). Free memory was 77.6MB in the beginning and 247.6MB in the end (delta: -170.0MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. * Witness Printer took 42.57ms. Allocated memory is still 499.1MB. Free memory was 247.6MB in the beginning and 244.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 110 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 21 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 4349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 728, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 728, unknown conditional: 0, unknown unconditional: 728] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 129 locations, 7 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: 17.7s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 739 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 586 mSDsluCounter, 535 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 472 mSDsCounter, 322 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1932 IncrementalHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 322 mSolverCounterUnsat, 63 mSDtfsCounter, 1932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1860occurred in iteration=13, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:53:54,457 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