./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe035_power.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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:10:31,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:10:31,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:10:31,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:10:31,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:10:31,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:10:31,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:10:31,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:10:31,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:10:31,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:10:31,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:10:31,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:10:31,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:10:31,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:10:31,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:10:31,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:10:31,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:10:31,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:10:31,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:10:31,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:10:31,808 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:10:31,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:10:31,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:10:31,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:10:31,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:10:31,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:10:31,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:10:31,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:10:31,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:10:31,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:10:31,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:10:31,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:10:31,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:10:31,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:10:31,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:10:31,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:10:31,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:10:31,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:10:31,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:10:31,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:10:31,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:10:31,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:10:31,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:10:31,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:10:31,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:10:31,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:10:31,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:10:31,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:10:31,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:10:31,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:10:31,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:10:31,849 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:10:31,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:10:31,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:10:31,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:10:31,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:10:31,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:10:31,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:10:31,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:10:31,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:10:31,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:10:31,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:31,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:10:31,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:10:31,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-07-12 10:10:32,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:10:32,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:10:32,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:10:32,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:10:32,033 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:10:32,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-12 10:10:32,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688e99db8/b72a110619cf477c8cee1b37ed243240/FLAG1d72b2765 [2022-07-12 10:10:32,512 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:10:32,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-07-12 10:10:32,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688e99db8/b72a110619cf477c8cee1b37ed243240/FLAG1d72b2765 [2022-07-12 10:10:32,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688e99db8/b72a110619cf477c8cee1b37ed243240 [2022-07-12 10:10:32,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:10:32,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:10:32,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:32,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:10:32,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:10:32,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:32" (1/1) ... [2022-07-12 10:10:32,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9d6b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:32, skipping insertion in model container [2022-07-12 10:10:32,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:10:32" (1/1) ... [2022-07-12 10:10:32,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:10:32,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:10:32,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-07-12 10:10:32,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:32,972 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:10:32,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-07-12 10:10:33,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:10:33,062 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:10:33,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33 WrapperNode [2022-07-12 10:10:33,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:10:33,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:33,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:10:33,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:10:33,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,144 INFO L137 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 484 [2022-07-12 10:10:33,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:10:33,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:10:33,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:10:33,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:10:33,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:10:33,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:10:33,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:10:33,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:10:33,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (1/1) ... [2022-07-12 10:10:33,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:10:33,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:10:33,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:10:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:10:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:10:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:10:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:10:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:10:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:10:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:10:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:10:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:10:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:10:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:10:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:10:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:10:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:10:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:10:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:10:33,288 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:10:33,387 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:10:33,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:10:33,988 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:10:34,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:10:34,490 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:10:34,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:34 BoogieIcfgContainer [2022-07-12 10:10:34,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:10:34,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:10:34,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:10:34,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:10:34,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:10:32" (1/3) ... [2022-07-12 10:10:34,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7933ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:34, skipping insertion in model container [2022-07-12 10:10:34,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:10:33" (2/3) ... [2022-07-12 10:10:34,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7933ea44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:10:34, skipping insertion in model container [2022-07-12 10:10:34,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:34" (3/3) ... [2022-07-12 10:10:34,500 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-07-12 10:10:34,505 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:10:34,511 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:10:34,512 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:10:34,512 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:10:34,577 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:10:34,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-07-12 10:10:34,653 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2022-07-12 10:10:34,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:10:34,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-07-12 10:10:34,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-07-12 10:10:34,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-07-12 10:10:34,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:10:34,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a72cd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73a21a44 [2022-07-12 10:10:34,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:10:34,714 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2022-07-12 10:10:34,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:10:34,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:34,715 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:34,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 159138810, now seen corresponding path program 1 times [2022-07-12 10:10:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:34,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045113592] [2022-07-12 10:10:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:34,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:34,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045113592] [2022-07-12 10:10:34,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045113592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:34,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:34,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:10:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431608212] [2022-07-12 10:10:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:34,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:10:34,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:10:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:10:34,949 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 119 [2022-07-12 10:10:34,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:34,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:34,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 119 [2022-07-12 10:10:34,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:35,422 INFO L129 PetriNetUnfolder]: 359/1823 cut-off events. [2022-07-12 10:10:35,422 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:10:35,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1823 events. 359/1823 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15996 event pairs, 131 based on Foata normal form. 92/1812 useless extension candidates. Maximal degree in co-relation 2362. Up to 445 conditions per place. [2022-07-12 10:10:35,448 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 20 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2022-07-12 10:10:35,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 291 flow [2022-07-12 10:10:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:10:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:10:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2022-07-12 10:10:35,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9159663865546218 [2022-07-12 10:10:35,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2022-07-12 10:10:35,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2022-07-12 10:10:35,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2022-07-12 10:10:35,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:35,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:35,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:35,481 INFO L186 Difference]: Start difference. First operand has 124 places, 116 transitions, 241 flow. Second operand 3 states and 327 transitions. [2022-07-12 10:10:35,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 291 flow [2022-07-12 10:10:35,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:10:35,491 INFO L242 Difference]: Finished difference. Result has 121 places, 112 transitions, 234 flow [2022-07-12 10:10:35,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-07-12 10:10:35,498 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-07-12 10:10:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 234 flow [2022-07-12 10:10:35,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:35,499 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:35,499 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:35,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:10:35,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1597697283, now seen corresponding path program 1 times [2022-07-12 10:10:35,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:35,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223982720] [2022-07-12 10:10:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:35,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:35,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:35,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223982720] [2022-07-12 10:10:35,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223982720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:35,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:35,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:10:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656980749] [2022-07-12 10:10:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:10:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:35,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:10:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:10:35,828 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2022-07-12 10:10:35,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:35,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:35,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2022-07-12 10:10:35,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:36,691 INFO L129 PetriNetUnfolder]: 1143/2848 cut-off events. [2022-07-12 10:10:36,691 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-07-12 10:10:36,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 2848 events. 1143/2848 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22055 event pairs, 206 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 4639. Up to 561 conditions per place. [2022-07-12 10:10:36,702 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 24 selfloop transitions, 2 changer transitions 63/169 dead transitions. [2022-07-12 10:10:36,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 510 flow [2022-07-12 10:10:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:10:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:10:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2022-07-12 10:10:36,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646125116713352 [2022-07-12 10:10:36,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2022-07-12 10:10:36,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2022-07-12 10:10:36,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:36,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2022-07-12 10:10:36,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:36,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:36,711 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:36,711 INFO L186 Difference]: Start difference. First operand has 121 places, 112 transitions, 234 flow. Second operand 9 states and 926 transitions. [2022-07-12 10:10:36,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 510 flow [2022-07-12 10:10:36,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 169 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:10:36,716 INFO L242 Difference]: Finished difference. Result has 134 places, 100 transitions, 226 flow [2022-07-12 10:10:36,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=134, PETRI_TRANSITIONS=100} [2022-07-12 10:10:36,717 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-12 10:10:36,717 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 100 transitions, 226 flow [2022-07-12 10:10:36,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:36,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:36,718 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:36,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:10:36,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1540814522, now seen corresponding path program 1 times [2022-07-12 10:10:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:36,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314698095] [2022-07-12 10:10:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:37,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314698095] [2022-07-12 10:10:37,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314698095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:37,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:37,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9733924] [2022-07-12 10:10:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:37,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-12 10:10:37,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 100 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 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) [2022-07-12 10:10:37,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:37,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-12 10:10:37,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:37,675 INFO L129 PetriNetUnfolder]: 1189/2301 cut-off events. [2022-07-12 10:10:37,675 INFO L130 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2022-07-12 10:10:37,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 2301 events. 1189/2301 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14137 event pairs, 463 based on Foata normal form. 47/2261 useless extension candidates. Maximal degree in co-relation 4659. Up to 1134 conditions per place. [2022-07-12 10:10:37,686 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 26 selfloop transitions, 15 changer transitions 49/166 dead transitions. [2022-07-12 10:10:37,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 559 flow [2022-07-12 10:10:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:10:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:10:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 992 transitions. [2022-07-12 10:10:37,689 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336134453781513 [2022-07-12 10:10:37,689 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 992 transitions. [2022-07-12 10:10:37,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 992 transitions. [2022-07-12 10:10:37,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:37,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 992 transitions. [2022-07-12 10:10:37,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:37,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:37,694 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:37,694 INFO L186 Difference]: Start difference. First operand has 134 places, 100 transitions, 226 flow. Second operand 10 states and 992 transitions. [2022-07-12 10:10:37,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 559 flow [2022-07-12 10:10:37,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 525 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:10:37,709 INFO L242 Difference]: Finished difference. Result has 125 places, 114 transitions, 328 flow [2022-07-12 10:10:37,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2022-07-12 10:10:37,710 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 1 predicate places. [2022-07-12 10:10:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 328 flow [2022-07-12 10:10:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 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) [2022-07-12 10:10:37,712 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:37,712 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:10:37,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2103791456, now seen corresponding path program 2 times [2022-07-12 10:10:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:37,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656430367] [2022-07-12 10:10:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:38,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656430367] [2022-07-12 10:10:38,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656430367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:38,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:38,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:10:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12716228] [2022-07-12 10:10:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:10:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:10:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:10:38,012 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-12 10:10:38,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 328 flow. Second operand has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:38,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:38,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-12 10:10:38,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:38,662 INFO L129 PetriNetUnfolder]: 1238/2387 cut-off events. [2022-07-12 10:10:38,662 INFO L130 PetriNetUnfolder]: For 3954/8090 co-relation queries the response was YES. [2022-07-12 10:10:38,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7758 conditions, 2387 events. 1238/2387 cut-off events. For 3954/8090 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14887 event pairs, 403 based on Foata normal form. 53/2353 useless extension candidates. Maximal degree in co-relation 7692. Up to 1129 conditions per place. [2022-07-12 10:10:38,677 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 29 selfloop transitions, 26 changer transitions 49/178 dead transitions. [2022-07-12 10:10:38,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 178 transitions, 887 flow [2022-07-12 10:10:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:10:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:10:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1062 transitions. [2022-07-12 10:10:38,680 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8113063407181055 [2022-07-12 10:10:38,680 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1062 transitions. [2022-07-12 10:10:38,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1062 transitions. [2022-07-12 10:10:38,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:38,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1062 transitions. [2022-07-12 10:10:38,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.54545454545455) internal successors, (1062), 11 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:38,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:38,685 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:38,685 INFO L186 Difference]: Start difference. First operand has 125 places, 114 transitions, 328 flow. Second operand 11 states and 1062 transitions. [2022-07-12 10:10:38,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 178 transitions, 887 flow [2022-07-12 10:10:38,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 873 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-07-12 10:10:38,691 INFO L242 Difference]: Finished difference. Result has 134 places, 126 transitions, 503 flow [2022-07-12 10:10:38,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-07-12 10:10:38,692 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 10 predicate places. [2022-07-12 10:10:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 503 flow [2022-07-12 10:10:38,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:38,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:38,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:38,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:10:38,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1885551681, now seen corresponding path program 1 times [2022-07-12 10:10:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:38,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445626509] [2022-07-12 10:10:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:38,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:39,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445626509] [2022-07-12 10:10:39,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445626509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:39,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:39,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:10:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774622235] [2022-07-12 10:10:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:39,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:10:39,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:10:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:10:39,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-12 10:10:39,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 503 flow. Second operand has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:39,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:39,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-12 10:10:39,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:40,734 INFO L129 PetriNetUnfolder]: 1103/2171 cut-off events. [2022-07-12 10:10:40,734 INFO L130 PetriNetUnfolder]: For 9534/13715 co-relation queries the response was YES. [2022-07-12 10:10:40,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 2171 events. 1103/2171 cut-off events. For 9534/13715 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13221 event pairs, 379 based on Foata normal form. 35/2082 useless extension candidates. Maximal degree in co-relation 9198. Up to 1415 conditions per place. [2022-07-12 10:10:40,751 INFO L132 encePairwiseOnDemand]: 98/119 looper letters, 55 selfloop transitions, 69 changer transitions 45/239 dead transitions. [2022-07-12 10:10:40,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 239 transitions, 1751 flow [2022-07-12 10:10:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:10:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:10:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1715 transitions. [2022-07-12 10:10:40,755 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585139318885449 [2022-07-12 10:10:40,755 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1715 transitions. [2022-07-12 10:10:40,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1715 transitions. [2022-07-12 10:10:40,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:40,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1715 transitions. [2022-07-12 10:10:40,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.26315789473684) internal successors, (1715), 19 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:40,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:40,764 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:40,764 INFO L186 Difference]: Start difference. First operand has 134 places, 126 transitions, 503 flow. Second operand 19 states and 1715 transitions. [2022-07-12 10:10:40,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 239 transitions, 1751 flow [2022-07-12 10:10:40,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 239 transitions, 1512 flow, removed 119 selfloop flow, removed 7 redundant places. [2022-07-12 10:10:40,775 INFO L242 Difference]: Finished difference. Result has 149 places, 190 transitions, 1178 flow [2022-07-12 10:10:40,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1178, PETRI_PLACES=149, PETRI_TRANSITIONS=190} [2022-07-12 10:10:40,776 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 25 predicate places. [2022-07-12 10:10:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 190 transitions, 1178 flow [2022-07-12 10:10:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:40,776 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:40,777 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:10:40,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1613135911, now seen corresponding path program 2 times [2022-07-12 10:10:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:40,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111928902] [2022-07-12 10:10:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:41,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111928902] [2022-07-12 10:10:41,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111928902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:41,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:41,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:10:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456053611] [2022-07-12 10:10:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:10:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:10:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:10:41,036 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-12 10:10:41,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 190 transitions, 1178 flow. Second operand has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:41,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:41,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-12 10:10:41,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:42,099 INFO L129 PetriNetUnfolder]: 1766/3357 cut-off events. [2022-07-12 10:10:42,099 INFO L130 PetriNetUnfolder]: For 15511/65699 co-relation queries the response was YES. [2022-07-12 10:10:42,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15927 conditions, 3357 events. 1766/3357 cut-off events. For 15511/65699 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22607 event pairs, 345 based on Foata normal form. 92/3336 useless extension candidates. Maximal degree in co-relation 15842. Up to 1642 conditions per place. [2022-07-12 10:10:42,129 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 103 selfloop transitions, 41 changer transitions 75/291 dead transitions. [2022-07-12 10:10:42,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 291 transitions, 2529 flow [2022-07-12 10:10:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:10:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:10:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1232 transitions. [2022-07-12 10:10:42,133 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7963800904977375 [2022-07-12 10:10:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1232 transitions. [2022-07-12 10:10:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1232 transitions. [2022-07-12 10:10:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:42,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1232 transitions. [2022-07-12 10:10:42,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.76923076923077) internal successors, (1232), 13 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:42,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:42,138 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 119.0) internal successors, (1666), 14 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:42,138 INFO L186 Difference]: Start difference. First operand has 149 places, 190 transitions, 1178 flow. Second operand 13 states and 1232 transitions. [2022-07-12 10:10:42,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 291 transitions, 2529 flow [2022-07-12 10:10:42,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 291 transitions, 2367 flow, removed 77 selfloop flow, removed 7 redundant places. [2022-07-12 10:10:42,162 INFO L242 Difference]: Finished difference. Result has 156 places, 185 transitions, 1138 flow [2022-07-12 10:10:42,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1138, PETRI_PLACES=156, PETRI_TRANSITIONS=185} [2022-07-12 10:10:42,165 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 32 predicate places. [2022-07-12 10:10:42,165 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 185 transitions, 1138 flow [2022-07-12 10:10:42,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.83333333333333) internal successors, (1054), 12 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:42,165 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:42,165 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:42,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:10:42,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 836580793, now seen corresponding path program 1 times [2022-07-12 10:10:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:42,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031174002] [2022-07-12 10:10:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:42,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:42,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031174002] [2022-07-12 10:10:42,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031174002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:42,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:42,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:10:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721630711] [2022-07-12 10:10:42,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:42,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:10:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:10:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:10:42,361 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2022-07-12 10:10:42,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 185 transitions, 1138 flow. Second operand has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:42,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:42,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2022-07-12 10:10:42,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:43,618 INFO L129 PetriNetUnfolder]: 1689/3293 cut-off events. [2022-07-12 10:10:43,619 INFO L130 PetriNetUnfolder]: For 17966/46458 co-relation queries the response was YES. [2022-07-12 10:10:43,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16214 conditions, 3293 events. 1689/3293 cut-off events. For 17966/46458 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22525 event pairs, 205 based on Foata normal form. 119/3313 useless extension candidates. Maximal degree in co-relation 16126. Up to 1658 conditions per place. [2022-07-12 10:10:43,646 INFO L132 encePairwiseOnDemand]: 101/119 looper letters, 130 selfloop transitions, 44 changer transitions 68/315 dead transitions. [2022-07-12 10:10:43,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 315 transitions, 2749 flow [2022-07-12 10:10:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:10:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:10:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1799 transitions. [2022-07-12 10:10:43,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7956656346749226 [2022-07-12 10:10:43,650 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1799 transitions. [2022-07-12 10:10:43,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1799 transitions. [2022-07-12 10:10:43,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:43,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1799 transitions. [2022-07-12 10:10:43,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.6842105263158) internal successors, (1799), 19 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:43,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:43,657 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:43,657 INFO L186 Difference]: Start difference. First operand has 156 places, 185 transitions, 1138 flow. Second operand 19 states and 1799 transitions. [2022-07-12 10:10:43,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 315 transitions, 2749 flow [2022-07-12 10:10:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 315 transitions, 2581 flow, removed 51 selfloop flow, removed 10 redundant places. [2022-07-12 10:10:43,692 INFO L242 Difference]: Finished difference. Result has 167 places, 183 transitions, 1184 flow [2022-07-12 10:10:43,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1184, PETRI_PLACES=167, PETRI_TRANSITIONS=183} [2022-07-12 10:10:43,693 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 43 predicate places. [2022-07-12 10:10:43,693 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 183 transitions, 1184 flow [2022-07-12 10:10:43,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.75) internal successors, (1065), 12 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:43,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:43,694 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:43,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:10:43,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1676887911, now seen corresponding path program 2 times [2022-07-12 10:10:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249276960] [2022-07-12 10:10:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249276960] [2022-07-12 10:10:43,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249276960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:43,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:43,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:10:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470708105] [2022-07-12 10:10:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:43,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:10:43,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:10:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:10:43,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-12 10:10:43,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 183 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:43,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:43,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-12 10:10:43,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:45,552 INFO L129 PetriNetUnfolder]: 6768/12405 cut-off events. [2022-07-12 10:10:45,552 INFO L130 PetriNetUnfolder]: For 115595/115955 co-relation queries the response was YES. [2022-07-12 10:10:45,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57319 conditions, 12405 events. 6768/12405 cut-off events. For 115595/115955 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 101493 event pairs, 351 based on Foata normal form. 208/12419 useless extension candidates. Maximal degree in co-relation 57233. Up to 3727 conditions per place. [2022-07-12 10:10:45,632 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 141 selfloop transitions, 7 changer transitions 184/420 dead transitions. [2022-07-12 10:10:45,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 420 transitions, 4256 flow [2022-07-12 10:10:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:10:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:10:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1022 transitions. [2022-07-12 10:10:45,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-12 10:10:45,635 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1022 transitions. [2022-07-12 10:10:45,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1022 transitions. [2022-07-12 10:10:45,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:45,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1022 transitions. [2022-07-12 10:10:45,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:45,639 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:45,639 INFO L186 Difference]: Start difference. First operand has 167 places, 183 transitions, 1184 flow. Second operand 10 states and 1022 transitions. [2022-07-12 10:10:45,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 420 transitions, 4256 flow [2022-07-12 10:10:45,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 420 transitions, 3922 flow, removed 98 selfloop flow, removed 11 redundant places. [2022-07-12 10:10:45,701 INFO L242 Difference]: Finished difference. Result has 163 places, 168 transitions, 988 flow [2022-07-12 10:10:45,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=163, PETRI_TRANSITIONS=168} [2022-07-12 10:10:45,702 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 39 predicate places. [2022-07-12 10:10:45,702 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 168 transitions, 988 flow [2022-07-12 10:10:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:45,702 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:45,702 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:10:45,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1139462990, now seen corresponding path program 1 times [2022-07-12 10:10:45,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:45,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921334785] [2022-07-12 10:10:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:45,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:45,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921334785] [2022-07-12 10:10:45,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921334785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:45,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:45,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191812174] [2022-07-12 10:10:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:45,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-12 10:10:45,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 168 transitions, 988 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 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) [2022-07-12 10:10:45,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:45,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-12 10:10:45,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:47,113 INFO L129 PetriNetUnfolder]: 2880/6286 cut-off events. [2022-07-12 10:10:47,113 INFO L130 PetriNetUnfolder]: For 45688/45801 co-relation queries the response was YES. [2022-07-12 10:10:47,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29500 conditions, 6286 events. 2880/6286 cut-off events. For 45688/45801 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 54003 event pairs, 347 based on Foata normal form. 239/6512 useless extension candidates. Maximal degree in co-relation 29413. Up to 1724 conditions per place. [2022-07-12 10:10:47,144 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 135 selfloop transitions, 18 changer transitions 94/334 dead transitions. [2022-07-12 10:10:47,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 334 transitions, 3191 flow [2022-07-12 10:10:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:10:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:10:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-07-12 10:10:47,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8601986249045073 [2022-07-12 10:10:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-07-12 10:10:47,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-07-12 10:10:47,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:47,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-07-12 10:10:47,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:47,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:47,151 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:47,152 INFO L186 Difference]: Start difference. First operand has 163 places, 168 transitions, 988 flow. Second operand 11 states and 1126 transitions. [2022-07-12 10:10:47,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 334 transitions, 3191 flow [2022-07-12 10:10:47,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3175 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-12 10:10:47,267 INFO L242 Difference]: Finished difference. Result has 171 places, 169 transitions, 1049 flow [2022-07-12 10:10:47,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1049, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2022-07-12 10:10:47,268 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 47 predicate places. [2022-07-12 10:10:47,268 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 1049 flow [2022-07-12 10:10:47,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 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) [2022-07-12 10:10:47,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:47,268 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:10:47,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 436664984, now seen corresponding path program 1 times [2022-07-12 10:10:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:47,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880691529] [2022-07-12 10:10:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880691529] [2022-07-12 10:10:47,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880691529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:47,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:47,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:10:47,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161948966] [2022-07-12 10:10:47,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:47,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:10:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:10:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:10:47,600 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-12 10:10:47,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 1049 flow. Second operand has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:47,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:47,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-12 10:10:47,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:48,450 INFO L129 PetriNetUnfolder]: 791/3601 cut-off events. [2022-07-12 10:10:48,450 INFO L130 PetriNetUnfolder]: For 14818/15864 co-relation queries the response was YES. [2022-07-12 10:10:48,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 3601 events. 791/3601 cut-off events. For 14818/15864 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 40008 event pairs, 85 based on Foata normal form. 18/3426 useless extension candidates. Maximal degree in co-relation 13963. Up to 874 conditions per place. [2022-07-12 10:10:48,508 INFO L132 encePairwiseOnDemand]: 104/119 looper letters, 81 selfloop transitions, 20 changer transitions 33/225 dead transitions. [2022-07-12 10:10:48,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 225 transitions, 1985 flow [2022-07-12 10:10:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:10:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:10:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1111 transitions. [2022-07-12 10:10:48,510 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780112044817927 [2022-07-12 10:10:48,510 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1111 transitions. [2022-07-12 10:10:48,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1111 transitions. [2022-07-12 10:10:48,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:48,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1111 transitions. [2022-07-12 10:10:48,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.58333333333333) internal successors, (1111), 12 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:48,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:48,514 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:48,514 INFO L186 Difference]: Start difference. First operand has 171 places, 169 transitions, 1049 flow. Second operand 12 states and 1111 transitions. [2022-07-12 10:10:48,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 225 transitions, 1985 flow [2022-07-12 10:10:48,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 225 transitions, 1871 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-07-12 10:10:48,568 INFO L242 Difference]: Finished difference. Result has 183 places, 181 transitions, 1183 flow [2022-07-12 10:10:48,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2022-07-12 10:10:48,570 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 59 predicate places. [2022-07-12 10:10:48,570 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 1183 flow [2022-07-12 10:10:48,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:48,571 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:48,571 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:10:48,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash 663213080, now seen corresponding path program 2 times [2022-07-12 10:10:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:48,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825973088] [2022-07-12 10:10:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:48,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:48,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825973088] [2022-07-12 10:10:48,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825973088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:48,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:48,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:10:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239610218] [2022-07-12 10:10:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:49,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:10:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:10:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:10:49,002 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2022-07-12 10:10:49,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 181 transitions, 1183 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:49,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:49,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2022-07-12 10:10:49,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:50,301 INFO L129 PetriNetUnfolder]: 937/4507 cut-off events. [2022-07-12 10:10:50,302 INFO L130 PetriNetUnfolder]: For 16243/16527 co-relation queries the response was YES. [2022-07-12 10:10:50,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15943 conditions, 4507 events. 937/4507 cut-off events. For 16243/16527 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 53214 event pairs, 96 based on Foata normal form. 33/4325 useless extension candidates. Maximal degree in co-relation 15834. Up to 606 conditions per place. [2022-07-12 10:10:50,347 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 74 selfloop transitions, 42 changer transitions 35/240 dead transitions. [2022-07-12 10:10:50,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 2305 flow [2022-07-12 10:10:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:10:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:10:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1435 transitions. [2022-07-12 10:10:50,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7536764705882353 [2022-07-12 10:10:50,351 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1435 transitions. [2022-07-12 10:10:50,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1435 transitions. [2022-07-12 10:10:50,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:50,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1435 transitions. [2022-07-12 10:10:50,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 89.6875) internal successors, (1435), 16 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:50,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:50,356 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:50,356 INFO L186 Difference]: Start difference. First operand has 183 places, 181 transitions, 1183 flow. Second operand 16 states and 1435 transitions. [2022-07-12 10:10:50,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 2305 flow [2022-07-12 10:10:50,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 240 transitions, 2236 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-07-12 10:10:50,401 INFO L242 Difference]: Finished difference. Result has 198 places, 194 transitions, 1496 flow [2022-07-12 10:10:50,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1496, PETRI_PLACES=198, PETRI_TRANSITIONS=194} [2022-07-12 10:10:50,402 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 74 predicate places. [2022-07-12 10:10:50,402 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 194 transitions, 1496 flow [2022-07-12 10:10:50,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:50,403 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:50,403 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:10:50,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 309575666, now seen corresponding path program 3 times [2022-07-12 10:10:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674174549] [2022-07-12 10:10:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:50,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674174549] [2022-07-12 10:10:50,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674174549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:50,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:50,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:10:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765303036] [2022-07-12 10:10:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:10:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:10:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:10:50,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-07-12 10:10:50,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 1496 flow. Second operand has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:50,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:50,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-07-12 10:10:50,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:51,815 INFO L129 PetriNetUnfolder]: 836/4049 cut-off events. [2022-07-12 10:10:51,816 INFO L130 PetriNetUnfolder]: For 18865/19108 co-relation queries the response was YES. [2022-07-12 10:10:51,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15255 conditions, 4049 events. 836/4049 cut-off events. For 18865/19108 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 46822 event pairs, 112 based on Foata normal form. 22/3872 useless extension candidates. Maximal degree in co-relation 15136. Up to 501 conditions per place. [2022-07-12 10:10:51,851 INFO L132 encePairwiseOnDemand]: 105/119 looper letters, 78 selfloop transitions, 32 changer transitions 30/228 dead transitions. [2022-07-12 10:10:51,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 228 transitions, 2349 flow [2022-07-12 10:10:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:10:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:10:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 988 transitions. [2022-07-12 10:10:51,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547746371275783 [2022-07-12 10:10:51,853 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 988 transitions. [2022-07-12 10:10:51,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 988 transitions. [2022-07-12 10:10:51,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:51,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 988 transitions. [2022-07-12 10:10:51,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.81818181818181) internal successors, (988), 11 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:51,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:51,857 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 119.0) internal successors, (1428), 12 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:51,857 INFO L186 Difference]: Start difference. First operand has 198 places, 194 transitions, 1496 flow. Second operand 11 states and 988 transitions. [2022-07-12 10:10:51,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 228 transitions, 2349 flow [2022-07-12 10:10:51,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 228 transitions, 2230 flow, removed 56 selfloop flow, removed 11 redundant places. [2022-07-12 10:10:51,900 INFO L242 Difference]: Finished difference. Result has 194 places, 189 transitions, 1431 flow [2022-07-12 10:10:51,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2022-07-12 10:10:51,901 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-12 10:10:51,901 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 1431 flow [2022-07-12 10:10:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.75) internal successors, (1356), 16 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:51,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:51,902 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:51,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:10:51,902 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 747727608, now seen corresponding path program 4 times [2022-07-12 10:10:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978943160] [2022-07-12 10:10:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:52,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978943160] [2022-07-12 10:10:52,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978943160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:52,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:52,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:10:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960665826] [2022-07-12 10:10:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:10:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:10:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:10:52,003 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2022-07-12 10:10:52,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 1431 flow. Second operand has 8 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) [2022-07-12 10:10:52,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:52,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2022-07-12 10:10:52,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:53,291 INFO L129 PetriNetUnfolder]: 2792/6664 cut-off events. [2022-07-12 10:10:53,292 INFO L130 PetriNetUnfolder]: For 66023/66144 co-relation queries the response was YES. [2022-07-12 10:10:53,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34128 conditions, 6664 events. 2792/6664 cut-off events. For 66023/66144 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 63294 event pairs, 349 based on Foata normal form. 108/6758 useless extension candidates. Maximal degree in co-relation 34073. Up to 1455 conditions per place. [2022-07-12 10:10:53,344 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 150 selfloop transitions, 22 changer transitions 117/379 dead transitions. [2022-07-12 10:10:53,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 379 transitions, 4516 flow [2022-07-12 10:10:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:10:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:10:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1375 transitions. [2022-07-12 10:10:53,347 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8253301320528211 [2022-07-12 10:10:53,347 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1375 transitions. [2022-07-12 10:10:53,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1375 transitions. [2022-07-12 10:10:53,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:53,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1375 transitions. [2022-07-12 10:10:53,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 98.21428571428571) internal successors, (1375), 14 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:53,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:53,379 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 119.0) internal successors, (1785), 15 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:53,379 INFO L186 Difference]: Start difference. First operand has 194 places, 189 transitions, 1431 flow. Second operand 14 states and 1375 transitions. [2022-07-12 10:10:53,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 379 transitions, 4516 flow [2022-07-12 10:10:53,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 379 transitions, 4020 flow, removed 149 selfloop flow, removed 14 redundant places. [2022-07-12 10:10:53,536 INFO L242 Difference]: Finished difference. Result has 197 places, 189 transitions, 1334 flow [2022-07-12 10:10:53,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1334, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2022-07-12 10:10:53,538 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 73 predicate places. [2022-07-12 10:10:53,538 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1334 flow [2022-07-12 10:10:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 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) [2022-07-12 10:10:53,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:53,539 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:10:53,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1332442293, now seen corresponding path program 1 times [2022-07-12 10:10:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197833817] [2022-07-12 10:10:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:53,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197833817] [2022-07-12 10:10:53,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197833817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:53,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:53,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:10:53,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241775333] [2022-07-12 10:10:53,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:10:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:10:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:10:53,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-12 10:10:53,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1334 flow. Second operand has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:53,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:53,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-12 10:10:53,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:54,954 INFO L129 PetriNetUnfolder]: 862/4983 cut-off events. [2022-07-12 10:10:54,954 INFO L130 PetriNetUnfolder]: For 19218/19707 co-relation queries the response was YES. [2022-07-12 10:10:55,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17936 conditions, 4983 events. 862/4983 cut-off events. For 19218/19707 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 65297 event pairs, 49 based on Foata normal form. 5/4712 useless extension candidates. Maximal degree in co-relation 17824. Up to 670 conditions per place. [2022-07-12 10:10:55,012 INFO L132 encePairwiseOnDemand]: 102/119 looper letters, 75 selfloop transitions, 30 changer transitions 52/249 dead transitions. [2022-07-12 10:10:55,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 249 transitions, 2353 flow [2022-07-12 10:10:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:10:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:10:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1629 transitions. [2022-07-12 10:10:55,016 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605042016806722 [2022-07-12 10:10:55,016 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1629 transitions. [2022-07-12 10:10:55,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1629 transitions. [2022-07-12 10:10:55,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:55,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1629 transitions. [2022-07-12 10:10:55,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.5) internal successors, (1629), 18 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:55,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:55,021 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 119.0) internal successors, (2261), 19 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:55,021 INFO L186 Difference]: Start difference. First operand has 197 places, 189 transitions, 1334 flow. Second operand 18 states and 1629 transitions. [2022-07-12 10:10:55,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 249 transitions, 2353 flow [2022-07-12 10:10:55,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 249 transitions, 2010 flow, removed 138 selfloop flow, removed 20 redundant places. [2022-07-12 10:10:55,202 INFO L242 Difference]: Finished difference. Result has 200 places, 185 transitions, 1214 flow [2022-07-12 10:10:55,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1214, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2022-07-12 10:10:55,203 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-12 10:10:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1214 flow [2022-07-12 10:10:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.86666666666666) internal successors, (1318), 15 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:55,204 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:55,204 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:55,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:10:55,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -320443777, now seen corresponding path program 2 times [2022-07-12 10:10:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:55,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057195836] [2022-07-12 10:10:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:55,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057195836] [2022-07-12 10:10:55,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057195836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:55,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:55,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:10:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900408782] [2022-07-12 10:10:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:10:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:10:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:10:55,395 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 119 [2022-07-12 10:10:55,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:55,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:55,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 119 [2022-07-12 10:10:55,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:56,135 INFO L129 PetriNetUnfolder]: 618/3815 cut-off events. [2022-07-12 10:10:56,135 INFO L130 PetriNetUnfolder]: For 7408/7493 co-relation queries the response was YES. [2022-07-12 10:10:56,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11419 conditions, 3815 events. 618/3815 cut-off events. For 7408/7493 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47898 event pairs, 32 based on Foata normal form. 2/3615 useless extension candidates. Maximal degree in co-relation 11374. Up to 392 conditions per place. [2022-07-12 10:10:56,157 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 77 selfloop transitions, 32 changer transitions 48/251 dead transitions. [2022-07-12 10:10:56,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 251 transitions, 2165 flow [2022-07-12 10:10:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:10:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:10:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2022-07-12 10:10:56,159 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7890756302521008 [2022-07-12 10:10:56,159 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2022-07-12 10:10:56,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2022-07-12 10:10:56,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:56,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2022-07-12 10:10:56,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:56,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:56,162 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:56,162 INFO L186 Difference]: Start difference. First operand has 200 places, 185 transitions, 1214 flow. Second operand 10 states and 939 transitions. [2022-07-12 10:10:56,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 251 transitions, 2165 flow [2022-07-12 10:10:56,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 251 transitions, 2031 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-07-12 10:10:56,208 INFO L242 Difference]: Finished difference. Result has 192 places, 196 transitions, 1390 flow [2022-07-12 10:10:56,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=192, PETRI_TRANSITIONS=196} [2022-07-12 10:10:56,208 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 68 predicate places. [2022-07-12 10:10:56,209 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 196 transitions, 1390 flow [2022-07-12 10:10:56,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:56,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:56,209 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:56,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:10:56,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -679533185, now seen corresponding path program 3 times [2022-07-12 10:10:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:56,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55198890] [2022-07-12 10:10:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:56,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:56,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55198890] [2022-07-12 10:10:56,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55198890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:56,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:56,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:10:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624255766] [2022-07-12 10:10:56,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:56,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:10:56,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:10:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:10:56,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2022-07-12 10:10:56,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 196 transitions, 1390 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:56,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:56,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2022-07-12 10:10:56,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:57,235 INFO L129 PetriNetUnfolder]: 594/3620 cut-off events. [2022-07-12 10:10:57,236 INFO L130 PetriNetUnfolder]: For 6886/6971 co-relation queries the response was YES. [2022-07-12 10:10:57,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 3620 events. 594/3620 cut-off events. For 6886/6971 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44995 event pairs, 24 based on Foata normal form. 2/3422 useless extension candidates. Maximal degree in co-relation 10614. Up to 422 conditions per place. [2022-07-12 10:10:57,267 INFO L132 encePairwiseOnDemand]: 106/119 looper letters, 82 selfloop transitions, 31 changer transitions 34/239 dead transitions. [2022-07-12 10:10:57,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 239 transitions, 2155 flow [2022-07-12 10:10:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:10:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:10:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1100 transitions. [2022-07-12 10:10:57,269 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7703081232492998 [2022-07-12 10:10:57,269 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1100 transitions. [2022-07-12 10:10:57,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1100 transitions. [2022-07-12 10:10:57,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:57,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1100 transitions. [2022-07-12 10:10:57,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.66666666666667) internal successors, (1100), 12 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:57,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:57,272 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:57,272 INFO L186 Difference]: Start difference. First operand has 192 places, 196 transitions, 1390 flow. Second operand 12 states and 1100 transitions. [2022-07-12 10:10:57,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 239 transitions, 2155 flow [2022-07-12 10:10:57,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 2120 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-12 10:10:57,324 INFO L242 Difference]: Finished difference. Result has 200 places, 195 transitions, 1487 flow [2022-07-12 10:10:57,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1487, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-07-12 10:10:57,325 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 76 predicate places. [2022-07-12 10:10:57,325 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 1487 flow [2022-07-12 10:10:57,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:57,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:57,326 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:57,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:10:57,326 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1566745033, now seen corresponding path program 4 times [2022-07-12 10:10:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:57,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189685109] [2022-07-12 10:10:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:57,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:57,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189685109] [2022-07-12 10:10:57,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189685109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:57,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:57,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:10:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010551754] [2022-07-12 10:10:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:57,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:10:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:10:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:10:57,465 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2022-07-12 10:10:57,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 1487 flow. Second operand has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:57,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:57,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2022-07-12 10:10:57,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:57,980 INFO L129 PetriNetUnfolder]: 597/3441 cut-off events. [2022-07-12 10:10:57,981 INFO L130 PetriNetUnfolder]: For 9583/9675 co-relation queries the response was YES. [2022-07-12 10:10:58,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 3441 events. 597/3441 cut-off events. For 9583/9675 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 41202 event pairs, 33 based on Foata normal form. 4/3269 useless extension candidates. Maximal degree in co-relation 10864. Up to 342 conditions per place. [2022-07-12 10:10:58,009 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 46 selfloop transitions, 1 changer transitions 93/239 dead transitions. [2022-07-12 10:10:58,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 239 transitions, 2260 flow [2022-07-12 10:10:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:10:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:10:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 683 transitions. [2022-07-12 10:10:58,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199279711884754 [2022-07-12 10:10:58,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 683 transitions. [2022-07-12 10:10:58,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 683 transitions. [2022-07-12 10:10:58,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:58,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 683 transitions. [2022-07-12 10:10:58,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.57142857142857) internal successors, (683), 7 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,013 INFO L186 Difference]: Start difference. First operand has 200 places, 195 transitions, 1487 flow. Second operand 7 states and 683 transitions. [2022-07-12 10:10:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 239 transitions, 2260 flow [2022-07-12 10:10:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 239 transitions, 2128 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-12 10:10:58,062 INFO L242 Difference]: Finished difference. Result has 194 places, 141 transitions, 804 flow [2022-07-12 10:10:58,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=194, PETRI_TRANSITIONS=141} [2022-07-12 10:10:58,063 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 70 predicate places. [2022-07-12 10:10:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 141 transitions, 804 flow [2022-07-12 10:10:58,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:10:58,063 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:10:58,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:10:58,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-12 10:10:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:10:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash -509438613, now seen corresponding path program 5 times [2022-07-12 10:10:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:10:58,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526187984] [2022-07-12 10:10:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:10:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:10:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:10:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:10:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:10:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526187984] [2022-07-12 10:10:58,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526187984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:10:58,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:10:58,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:10:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570723970] [2022-07-12 10:10:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:10:58,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:10:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:10:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:10:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:10:58,480 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-07-12 10:10:58,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 141 transitions, 804 flow. Second operand has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:10:58,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-07-12 10:10:58,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:10:58,932 INFO L129 PetriNetUnfolder]: 142/1031 cut-off events. [2022-07-12 10:10:58,932 INFO L130 PetriNetUnfolder]: For 1931/1959 co-relation queries the response was YES. [2022-07-12 10:10:58,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1031 events. 142/1031 cut-off events. For 1931/1959 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9189 event pairs, 11 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 2963. Up to 96 conditions per place. [2022-07-12 10:10:58,938 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-07-12 10:10:58,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 145 transitions, 962 flow [2022-07-12 10:10:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:10:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:10:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1063 transitions. [2022-07-12 10:10:58,940 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-07-12 10:10:58,940 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1063 transitions. [2022-07-12 10:10:58,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1063 transitions. [2022-07-12 10:10:58,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:10:58,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1063 transitions. [2022-07-12 10:10:58,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.58333333333333) internal successors, (1063), 12 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,942 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,942 INFO L186 Difference]: Start difference. First operand has 194 places, 141 transitions, 804 flow. Second operand 12 states and 1063 transitions. [2022-07-12 10:10:58,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 145 transitions, 962 flow [2022-07-12 10:10:58,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 145 transitions, 849 flow, removed 20 selfloop flow, removed 23 redundant places. [2022-07-12 10:10:58,952 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2022-07-12 10:10:58,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2022-07-12 10:10:58,953 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 50 predicate places. [2022-07-12 10:10:58,953 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2022-07-12 10:10:58,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 87.07142857142857) internal successors, (1219), 14 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:10:58,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-12 10:10:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-12 10:10:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-12 10:10:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-12 10:10:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-07-12 10:10:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-12 10:10:58,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:10:58,956 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 2, 1, 1, 1] [2022-07-12 10:10:58,960 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:10:58,960 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:10:58,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:10:58 BasicIcfg [2022-07-12 10:10:58,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:10:58,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:10:58,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:10:58,964 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:10:58,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:10:34" (3/4) ... [2022-07-12 10:10:58,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:10:58,969 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:10:58,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:10:58,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:10:58,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 179 nodes and edges [2022-07-12 10:10:58,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-07-12 10:10:58,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-12 10:10:58,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:10:59,017 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:10:59,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:10:59,017 INFO L158 Benchmark]: Toolchain (without parser) took 26475.28ms. Allocated memory was 100.7MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 68.4MB in the beginning and 965.0MB in the end (delta: -896.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-07-12 10:10:59,018 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 40.3MB in the beginning and 40.3MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:10:59,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.49ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 57.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 10:10:59,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.91ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 53.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:10:59,018 INFO L158 Benchmark]: Boogie Preprocessor took 57.79ms. Allocated memory is still 100.7MB. Free memory was 53.5MB in the beginning and 49.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:10:59,018 INFO L158 Benchmark]: RCFGBuilder took 1286.82ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 49.8MB in the beginning and 63.0MB in the end (delta: -13.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2022-07-12 10:10:59,019 INFO L158 Benchmark]: TraceAbstraction took 24468.26ms. Allocated memory was 127.9MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 63.0MB in the beginning and 972.3MB in the end (delta: -909.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-07-12 10:10:59,019 INFO L158 Benchmark]: Witness Printer took 53.08ms. Allocated memory is still 2.2GB. Free memory was 972.3MB in the beginning and 965.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:10:59,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 40.3MB in the beginning and 40.3MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.49ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 57.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.91ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 53.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.79ms. Allocated memory is still 100.7MB. Free memory was 53.5MB in the beginning and 49.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1286.82ms. Allocated memory was 100.7MB in the beginning and 127.9MB in the end (delta: 27.3MB). Free memory was 49.8MB in the beginning and 63.0MB in the end (delta: -13.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 24468.26ms. Allocated memory was 127.9MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 63.0MB in the beginning and 972.3MB in the end (delta: -909.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 53.08ms. Allocated memory is still 2.2GB. Free memory was 972.3MB in the beginning and 965.0MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 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: 24.3s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1070 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1070 mSDsluCounter, 1318 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2021 mSDsCounter, 710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5360 IncrementalHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 710 mSolverCounterUnsat, 215 mSDtfsCounter, 5360 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1496occurred in iteration=11, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1511 NumberOfCodeBlocks, 1511 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1493 ConstructedInterpolants, 0 QuantifiedInterpolants, 9408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:10:59,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE