./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -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 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:47:56,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:47:56,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:47:56,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:47:56,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:47:56,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:47:56,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:47:56,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:47:56,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:47:56,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:47:56,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:47:56,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:47:56,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:47:56,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:47:56,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:47:56,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:47:56,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:47:56,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:47:56,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:47:56,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:47:56,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:47:56,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:47:56,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:47:56,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:47:56,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:47:56,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:47:56,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:47:56,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:47:56,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:47:56,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:47:56,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:47:56,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:47:56,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:47:56,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:47:56,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:47:56,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:47:56,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:47:56,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:47:56,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:47:56,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:47:56,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:47:56,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:47:56,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:47:56,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:47:56,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:47:56,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:47:56,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:47:56,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:47:56,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:47:56,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:47:56,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:47:56,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:47:56,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:47:56,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:56,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:47:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:47:56,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:47:56,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:47:56,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:47:56,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:47:56,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa [2021-12-17 22:47:56,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:47:56,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:47:56,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:47:56,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:47:56,855 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:47:56,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-12-17 22:47:56,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458ab0b27/1ec8c10f005d452f923023e61f397079/FLAG7e091d2c7 [2021-12-17 22:47:57,354 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:47:57,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-12-17 22:47:57,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458ab0b27/1ec8c10f005d452f923023e61f397079/FLAG7e091d2c7 [2021-12-17 22:47:57,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458ab0b27/1ec8c10f005d452f923023e61f397079 [2021-12-17 22:47:57,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:47:57,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:47:57,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:57,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:47:57,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:47:57,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:57" (1/1) ... [2021-12-17 22:47:57,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105e0db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:57, skipping insertion in model container [2021-12-17 22:47:57,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:47:57" (1/1) ... [2021-12-17 22:47:57,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:47:57,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:47:58,000 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/weaver/chl-time-symm.wvr.c[2494,2507] [2021-12-17 22:47:58,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:58,016 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:47:58,045 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/weaver/chl-time-symm.wvr.c[2494,2507] [2021-12-17 22:47:58,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:47:58,057 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:47:58,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58 WrapperNode [2021-12-17 22:47:58,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:47:58,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:58,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:47:58,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:47:58,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,103 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 9, calls inlined = 15, statements flattened = 164 [2021-12-17 22:47:58,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:47:58,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:47:58,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:47:58,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:47:58,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:47:58,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:47:58,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:47:58,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:47:58,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (1/1) ... [2021-12-17 22:47:58,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:47:58,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:47:58,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 22:47:58,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 22:47:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:47:58,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:47:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:47:58,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:47:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:47:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:47:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:47:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:47:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:47:58,235 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:47:58,341 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:47:58,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:47:58,564 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:47:58,793 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:47:58,794 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:47:58,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:58 BoogieIcfgContainer [2021-12-17 22:47:58,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:47:58,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:47:58,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:47:58,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:47:58,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:47:57" (1/3) ... [2021-12-17 22:47:58,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbfd339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:58, skipping insertion in model container [2021-12-17 22:47:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:47:58" (2/3) ... [2021-12-17 22:47:58,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbfd339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:47:58, skipping insertion in model container [2021-12-17 22:47:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:58" (3/3) ... [2021-12-17 22:47:58,803 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2021-12-17 22:47:58,822 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:47:58,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:47:58,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:47:58,822 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:47:58,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,864 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:47:58,868 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 22:47:58,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:47:58,903 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:47:58,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:47:58,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 220 flow [2021-12-17 22:47:58,963 INFO L129 PetriNetUnfolder]: 5/100 cut-off events. [2021-12-17 22:47:58,964 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:47:58,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 5/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-12-17 22:47:58,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 102 transitions, 220 flow [2021-12-17 22:47:58,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 91 transitions, 194 flow [2021-12-17 22:47:59,002 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2021-12-17 22:47:59,013 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 22:47:59,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:59,015 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:59,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:59,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -408130587, now seen corresponding path program 1 times [2021-12-17 22:47:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163822888] [2021-12-17 22:47:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:59,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:59,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:59,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163822888] [2021-12-17 22:47:59,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163822888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:59,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:59,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:47:59,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584882475] [2021-12-17 22:47:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:59,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:47:59,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:47:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:47:59,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:47:59,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:59,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:47:59,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:47:59,730 INFO L129 PetriNetUnfolder]: 7/160 cut-off events. [2021-12-17 22:47:59,731 INFO L130 PetriNetUnfolder]: For 21/24 co-relation queries the response was YES. [2021-12-17 22:47:59,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 160 events. 7/160 cut-off events. For 21/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 324 event pairs, 0 based on Foata normal form. 5/154 useless extension candidates. Maximal degree in co-relation 80. Up to 15 conditions per place. [2021-12-17 22:47:59,734 INFO L132 encePairwiseOnDemand]: 92/102 looper letters, 30 selfloop transitions, 8 changer transitions 1/102 dead transitions. [2021-12-17 22:47:59,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 301 flow [2021-12-17 22:47:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:47:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:47:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2021-12-17 22:47:59,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7871148459383753 [2021-12-17 22:47:59,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2021-12-17 22:47:59,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2021-12-17 22:47:59,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:47:59,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2021-12-17 22:47:59,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,814 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 194 flow. Second operand 7 states and 562 transitions. [2021-12-17 22:47:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 301 flow [2021-12-17 22:47:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:47:59,821 INFO L242 Difference]: Finished difference. Result has 98 places, 94 transitions, 230 flow [2021-12-17 22:47:59,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2021-12-17 22:47:59,825 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2021-12-17 22:47:59,826 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 230 flow [2021-12-17 22:47:59,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,826 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:47:59,826 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:47:59,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:47:59,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:47:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:47:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2065107161, now seen corresponding path program 2 times [2021-12-17 22:47:59,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:47:59,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381851537] [2021-12-17 22:47:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:47:59,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:47:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:47:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:47:59,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:47:59,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381851537] [2021-12-17 22:47:59,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381851537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:47:59,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:47:59,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:47:59,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348024216] [2021-12-17 22:47:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:47:59,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:47:59,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:47:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:47:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:47:59,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:47:59,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:47:59,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:47:59,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:47:59,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:00,133 INFO L129 PetriNetUnfolder]: 7/176 cut-off events. [2021-12-17 22:48:00,133 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-12-17 22:48:00,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 176 events. 7/176 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 406 event pairs, 1 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 168. Up to 19 conditions per place. [2021-12-17 22:48:00,135 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 35 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2021-12-17 22:48:00,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 350 flow [2021-12-17 22:48:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:48:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:48:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2021-12-17 22:48:00,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-12-17 22:48:00,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2021-12-17 22:48:00,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2021-12-17 22:48:00,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:00,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2021-12-17 22:48:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,146 INFO L186 Difference]: Start difference. First operand has 98 places, 94 transitions, 230 flow. Second operand 6 states and 486 transitions. [2021-12-17 22:48:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 350 flow [2021-12-17 22:48:00,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:00,150 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 262 flow [2021-12-17 22:48:00,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2021-12-17 22:48:00,151 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 9 predicate places. [2021-12-17 22:48:00,151 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 262 flow [2021-12-17 22:48:00,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:00,168 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:00,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:48:00,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1248762543, now seen corresponding path program 1 times [2021-12-17 22:48:00,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:00,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934522738] [2021-12-17 22:48:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:00,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:00,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934522738] [2021-12-17 22:48:00,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934522738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:00,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:00,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:00,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203958349] [2021-12-17 22:48:00,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:00,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:00,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:00,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:00,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:00,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:00,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:00,390 INFO L129 PetriNetUnfolder]: 5/200 cut-off events. [2021-12-17 22:48:00,391 INFO L130 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2021-12-17 22:48:00,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 200 events. 5/200 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 573 event pairs, 0 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 184. Up to 12 conditions per place. [2021-12-17 22:48:00,392 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 33 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2021-12-17 22:48:00,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 375 flow [2021-12-17 22:48:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:48:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:48:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 558 transitions. [2021-12-17 22:48:00,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-12-17 22:48:00,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 558 transitions. [2021-12-17 22:48:00,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 558 transitions. [2021-12-17 22:48:00,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:00,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 558 transitions. [2021-12-17 22:48:00,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,397 INFO L186 Difference]: Start difference. First operand has 102 places, 96 transitions, 262 flow. Second operand 7 states and 558 transitions. [2021-12-17 22:48:00,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 375 flow [2021-12-17 22:48:00,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:48:00,400 INFO L242 Difference]: Finished difference. Result has 109 places, 99 transitions, 297 flow [2021-12-17 22:48:00,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2021-12-17 22:48:00,415 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 16 predicate places. [2021-12-17 22:48:00,415 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 297 flow [2021-12-17 22:48:00,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:00,416 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:48:00,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash -958834169, now seen corresponding path program 1 times [2021-12-17 22:48:00,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:00,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824712951] [2021-12-17 22:48:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:00,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:00,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:00,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824712951] [2021-12-17 22:48:00,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824712951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:00,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:00,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:48:00,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399362244] [2021-12-17 22:48:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:00,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:48:00,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:48:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:48:00,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2021-12-17 22:48:00,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:00,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2021-12-17 22:48:00,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:00,610 INFO L129 PetriNetUnfolder]: 7/245 cut-off events. [2021-12-17 22:48:00,610 INFO L130 PetriNetUnfolder]: For 78/81 co-relation queries the response was YES. [2021-12-17 22:48:00,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 245 events. 7/245 cut-off events. For 78/81 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 953 event pairs, 2 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 267. Up to 74 conditions per place. [2021-12-17 22:48:00,617 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 26 selfloop transitions, 4 changer transitions 4/111 dead transitions. [2021-12-17 22:48:00,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 389 flow [2021-12-17 22:48:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:48:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:48:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2021-12-17 22:48:00,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207282913165266 [2021-12-17 22:48:00,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2021-12-17 22:48:00,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2021-12-17 22:48:00,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:00,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2021-12-17 22:48:00,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,622 INFO L186 Difference]: Start difference. First operand has 109 places, 99 transitions, 297 flow. Second operand 7 states and 586 transitions. [2021-12-17 22:48:00,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 389 flow [2021-12-17 22:48:00,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:00,634 INFO L242 Difference]: Finished difference. Result has 118 places, 102 transitions, 325 flow [2021-12-17 22:48:00,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2021-12-17 22:48:00,649 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 25 predicate places. [2021-12-17 22:48:00,650 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 325 flow [2021-12-17 22:48:00,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:00,652 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:00,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:48:00,652 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash 795161343, now seen corresponding path program 1 times [2021-12-17 22:48:00,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030065311] [2021-12-17 22:48:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:00,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:00,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030065311] [2021-12-17 22:48:00,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030065311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:00,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:00,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:48:00,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61272524] [2021-12-17 22:48:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:48:00,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:48:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:48:00,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2021-12-17 22:48:00,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:00,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2021-12-17 22:48:00,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:00,882 INFO L129 PetriNetUnfolder]: 6/234 cut-off events. [2021-12-17 22:48:00,882 INFO L130 PetriNetUnfolder]: For 107/110 co-relation queries the response was YES. [2021-12-17 22:48:00,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 234 events. 6/234 cut-off events. For 107/110 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 848 event pairs, 2 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 367. Up to 92 conditions per place. [2021-12-17 22:48:00,884 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 23 selfloop transitions, 0 changer transitions 10/107 dead transitions. [2021-12-17 22:48:00,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 107 transitions, 397 flow [2021-12-17 22:48:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:48:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:48:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2021-12-17 22:48:00,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109243697478992 [2021-12-17 22:48:00,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2021-12-17 22:48:00,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2021-12-17 22:48:00,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:00,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2021-12-17 22:48:00,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,889 INFO L186 Difference]: Start difference. First operand has 118 places, 102 transitions, 325 flow. Second operand 7 states and 579 transitions. [2021-12-17 22:48:00,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 107 transitions, 397 flow [2021-12-17 22:48:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 385 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:00,892 INFO L242 Difference]: Finished difference. Result has 122 places, 97 transitions, 296 flow [2021-12-17 22:48:00,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2021-12-17 22:48:00,893 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 29 predicate places. [2021-12-17 22:48:00,893 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 296 flow [2021-12-17 22:48:00,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:00,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:00,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:48:00,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1527220719, now seen corresponding path program 2 times [2021-12-17 22:48:00,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:00,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839271458] [2021-12-17 22:48:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:00,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:00,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:00,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839271458] [2021-12-17 22:48:00,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839271458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:00,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:00,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:00,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284791514] [2021-12-17 22:48:00,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:00,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:00,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:00,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:00,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:00,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:00,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:00,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,121 INFO L129 PetriNetUnfolder]: 6/201 cut-off events. [2021-12-17 22:48:01,121 INFO L130 PetriNetUnfolder]: For 83/86 co-relation queries the response was YES. [2021-12-17 22:48:01,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 201 events. 6/201 cut-off events. For 83/86 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 585 event pairs, 1 based on Foata normal form. 2/202 useless extension candidates. Maximal degree in co-relation 373. Up to 13 conditions per place. [2021-12-17 22:48:01,122 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 28 selfloop transitions, 9 changer transitions 2/103 dead transitions. [2021-12-17 22:48:01,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 103 transitions, 399 flow [2021-12-17 22:48:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:48:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:48:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2021-12-17 22:48:01,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7787114845938375 [2021-12-17 22:48:01,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2021-12-17 22:48:01,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2021-12-17 22:48:01,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2021-12-17 22:48:01,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,128 INFO L186 Difference]: Start difference. First operand has 122 places, 97 transitions, 296 flow. Second operand 7 states and 556 transitions. [2021-12-17 22:48:01,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 103 transitions, 399 flow [2021-12-17 22:48:01,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 362 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-12-17 22:48:01,131 INFO L242 Difference]: Finished difference. Result has 113 places, 96 transitions, 286 flow [2021-12-17 22:48:01,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2021-12-17 22:48:01,133 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2021-12-17 22:48:01,133 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 286 flow [2021-12-17 22:48:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:48:01,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash 762167167, now seen corresponding path program 1 times [2021-12-17 22:48:01,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850088023] [2021-12-17 22:48:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:01,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850088023] [2021-12-17 22:48:01,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850088023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:01,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816235901] [2021-12-17 22:48:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:01,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:01,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:01,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:01,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,304 INFO L129 PetriNetUnfolder]: 2/183 cut-off events. [2021-12-17 22:48:01,304 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2021-12-17 22:48:01,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 183 events. 2/183 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 488 event pairs, 0 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 294. Up to 15 conditions per place. [2021-12-17 22:48:01,306 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 30 selfloop transitions, 6 changer transitions 1/101 dead transitions. [2021-12-17 22:48:01,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 370 flow [2021-12-17 22:48:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:48:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:48:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 479 transitions. [2021-12-17 22:48:01,307 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826797385620915 [2021-12-17 22:48:01,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 479 transitions. [2021-12-17 22:48:01,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 479 transitions. [2021-12-17 22:48:01,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 479 transitions. [2021-12-17 22:48:01,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,310 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,310 INFO L186 Difference]: Start difference. First operand has 113 places, 96 transitions, 286 flow. Second operand 6 states and 479 transitions. [2021-12-17 22:48:01,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 370 flow [2021-12-17 22:48:01,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 101 transitions, 359 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:01,312 INFO L242 Difference]: Finished difference. Result has 114 places, 95 transitions, 283 flow [2021-12-17 22:48:01,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2021-12-17 22:48:01,313 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 21 predicate places. [2021-12-17 22:48:01,314 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 283 flow [2021-12-17 22:48:01,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,314 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:48:01,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1489387875, now seen corresponding path program 1 times [2021-12-17 22:48:01,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266137588] [2021-12-17 22:48:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:01,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266137588] [2021-12-17 22:48:01,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266137588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:01,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126731645] [2021-12-17 22:48:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:01,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:01,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:01,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:01,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,475 INFO L129 PetriNetUnfolder]: 2/165 cut-off events. [2021-12-17 22:48:01,475 INFO L130 PetriNetUnfolder]: For 50/53 co-relation queries the response was YES. [2021-12-17 22:48:01,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 165 events. 2/165 cut-off events. For 50/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 351 event pairs, 0 based on Foata normal form. 2/167 useless extension candidates. Maximal degree in co-relation 271. Up to 14 conditions per place. [2021-12-17 22:48:01,476 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 27 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2021-12-17 22:48:01,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 356 flow [2021-12-17 22:48:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:48:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:48:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2021-12-17 22:48:01,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794117647058824 [2021-12-17 22:48:01,478 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2021-12-17 22:48:01,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2021-12-17 22:48:01,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2021-12-17 22:48:01,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,482 INFO L186 Difference]: Start difference. First operand has 114 places, 95 transitions, 283 flow. Second operand 6 states and 477 transitions. [2021-12-17 22:48:01,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 356 flow [2021-12-17 22:48:01,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 98 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:01,484 INFO L242 Difference]: Finished difference. Result has 114 places, 95 transitions, 286 flow [2021-12-17 22:48:01,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2021-12-17 22:48:01,486 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 21 predicate places. [2021-12-17 22:48:01,486 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 286 flow [2021-12-17 22:48:01,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,487 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,487 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:48:01,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2060768543, now seen corresponding path program 1 times [2021-12-17 22:48:01,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465819521] [2021-12-17 22:48:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:01,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465819521] [2021-12-17 22:48:01,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465819521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:48:01,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001876302] [2021-12-17 22:48:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:48:01,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:48:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:48:01,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2021-12-17 22:48:01,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2021-12-17 22:48:01,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,663 INFO L129 PetriNetUnfolder]: 2/151 cut-off events. [2021-12-17 22:48:01,663 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2021-12-17 22:48:01,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 151 events. 2/151 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 2 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 282. Up to 41 conditions per place. [2021-12-17 22:48:01,664 INFO L132 encePairwiseOnDemand]: 93/102 looper letters, 26 selfloop transitions, 4 changer transitions 11/106 dead transitions. [2021-12-17 22:48:01,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 382 flow [2021-12-17 22:48:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 22:48:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 22:48:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2021-12-17 22:48:01,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7892156862745098 [2021-12-17 22:48:01,666 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2021-12-17 22:48:01,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2021-12-17 22:48:01,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2021-12-17 22:48:01,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,669 INFO L186 Difference]: Start difference. First operand has 114 places, 95 transitions, 286 flow. Second operand 8 states and 644 transitions. [2021-12-17 22:48:01,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 382 flow [2021-12-17 22:48:01,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 106 transitions, 374 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-17 22:48:01,671 INFO L242 Difference]: Finished difference. Result has 124 places, 89 transitions, 258 flow [2021-12-17 22:48:01,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=124, PETRI_TRANSITIONS=89} [2021-12-17 22:48:01,672 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 31 predicate places. [2021-12-17 22:48:01,672 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 89 transitions, 258 flow [2021-12-17 22:48:01,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,673 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 22:48:01,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash 262757773, now seen corresponding path program 2 times [2021-12-17 22:48:01,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800359363] [2021-12-17 22:48:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:01,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800359363] [2021-12-17 22:48:01,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800359363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:48:01,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245041120] [2021-12-17 22:48:01,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:48:01,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:48:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:48:01,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:01,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 89 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:01,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,856 INFO L129 PetriNetUnfolder]: 0/100 cut-off events. [2021-12-17 22:48:01,856 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-12-17 22:48:01,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 100 events. 0/100 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2021-12-17 22:48:01,857 INFO L132 encePairwiseOnDemand]: 94/102 looper letters, 18 selfloop transitions, 7 changer transitions 1/89 dead transitions. [2021-12-17 22:48:01,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 89 transitions, 311 flow [2021-12-17 22:48:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:48:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:48:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2021-12-17 22:48:01,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633053221288515 [2021-12-17 22:48:01,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2021-12-17 22:48:01,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2021-12-17 22:48:01,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2021-12-17 22:48:01,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,862 INFO L186 Difference]: Start difference. First operand has 124 places, 89 transitions, 258 flow. Second operand 7 states and 545 transitions. [2021-12-17 22:48:01,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 89 transitions, 311 flow [2021-12-17 22:48:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 89 transitions, 264 flow, removed 9 selfloop flow, removed 17 redundant places. [2021-12-17 22:48:01,864 INFO L242 Difference]: Finished difference. Result has 106 places, 88 transitions, 228 flow [2021-12-17 22:48:01,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2021-12-17 22:48:01,864 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 13 predicate places. [2021-12-17 22:48:01,865 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 228 flow [2021-12-17 22:48:01,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,865 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 22:48:01,865 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1648525419, now seen corresponding path program 1 times [2021-12-17 22:48:01,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119258640] [2021-12-17 22:48:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:01,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119258640] [2021-12-17 22:48:01,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119258640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:01,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:01,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:01,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638803406] [2021-12-17 22:48:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:01,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:01,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:01,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:01,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:01,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:01,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:01,971 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-12-17 22:48:01,971 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-17 22:48:01,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 84 events. 0/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-12-17 22:48:01,972 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 20 selfloop transitions, 2 changer transitions 3/84 dead transitions. [2021-12-17 22:48:01,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 84 transitions, 253 flow [2021-12-17 22:48:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:48:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:48:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2021-12-17 22:48:01,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7725490196078432 [2021-12-17 22:48:01,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2021-12-17 22:48:01,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2021-12-17 22:48:01,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:01,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2021-12-17 22:48:01,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,977 INFO L186 Difference]: Start difference. First operand has 106 places, 88 transitions, 228 flow. Second operand 5 states and 394 transitions. [2021-12-17 22:48:01,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 84 transitions, 253 flow [2021-12-17 22:48:01,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 84 transitions, 236 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-12-17 22:48:01,979 INFO L242 Difference]: Finished difference. Result has 101 places, 81 transitions, 184 flow [2021-12-17 22:48:01,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2021-12-17 22:48:01,979 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, 8 predicate places. [2021-12-17 22:48:01,980 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 184 flow [2021-12-17 22:48:01,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:01,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:48:01,980 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:48:01,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 22:48:01,981 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 22:48:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:48:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 457692041, now seen corresponding path program 2 times [2021-12-17 22:48:01,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:48:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411073556] [2021-12-17 22:48:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:48:01,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:48:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:48:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:48:02,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:48:02,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411073556] [2021-12-17 22:48:02,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411073556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:48:02,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:48:02,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:48:02,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226587625] [2021-12-17 22:48:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:48:02,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:48:02,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:48:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:48:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:48:02,037 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-12-17 22:48:02,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:02,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:48:02,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-12-17 22:48:02,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:48:02,092 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2021-12-17 22:48:02,092 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:48:02,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 67 events. 0/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-12-17 22:48:02,092 INFO L132 encePairwiseOnDemand]: 96/102 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2021-12-17 22:48:02,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 193 flow [2021-12-17 22:48:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:48:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:48:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2021-12-17 22:48:02,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761437908496732 [2021-12-17 22:48:02,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2021-12-17 22:48:02,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2021-12-17 22:48:02,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:48:02,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2021-12-17 22:48:02,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:02,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:02,096 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:02,096 INFO L186 Difference]: Start difference. First operand has 101 places, 81 transitions, 184 flow. Second operand 6 states and 466 transitions. [2021-12-17 22:48:02,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 193 flow [2021-12-17 22:48:02,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 67 transitions, 184 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-12-17 22:48:02,097 INFO L242 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2021-12-17 22:48:02,098 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2021-12-17 22:48:02,098 INFO L334 CegarLoopForPetriNet]: 93 programPoint places, -13 predicate places. [2021-12-17 22:48:02,098 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2021-12-17 22:48:02,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:48:02,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-17 22:48:02,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-17 22:48:02,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-17 22:48:02,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 22:48:02,103 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2021-12-17 22:48:02,105 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:48:02,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:48:02,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:48:02 BasicIcfg [2021-12-17 22:48:02,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:48:02,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:48:02,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:48:02,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:48:02,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:47:58" (3/4) ... [2021-12-17 22:48:02,126 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:48:02,129 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-17 22:48:02,129 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-17 22:48:02,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-12-17 22:48:02,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:48:02,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:48:02,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:48:02,158 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:48:02,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:48:02,158 INFO L158 Benchmark]: Toolchain (without parser) took 4357.20ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 100.6MB in the beginning and 66.0MB in the end (delta: 34.7MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,159 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:48:02,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.19ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 105.8MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.51ms. Allocated memory is still 130.0MB. Free memory was 105.8MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,159 INFO L158 Benchmark]: Boogie Preprocessor took 35.90ms. Allocated memory is still 130.0MB. Free memory was 103.7MB in the beginning and 102.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:48:02,160 INFO L158 Benchmark]: RCFGBuilder took 655.63ms. Allocated memory is still 130.0MB. Free memory was 102.4MB in the beginning and 70.1MB in the end (delta: 32.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,160 INFO L158 Benchmark]: TraceAbstraction took 3309.79ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 70.1MB in the beginning and 69.1MB in the end (delta: 991.4kB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,160 INFO L158 Benchmark]: Witness Printer took 34.93ms. Allocated memory is still 159.4MB. Free memory was 69.1MB in the beginning and 66.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 22:48:02,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 47.6MB in the beginning and 47.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.19ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 105.8MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.51ms. Allocated memory is still 130.0MB. Free memory was 105.8MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.90ms. Allocated memory is still 130.0MB. Free memory was 103.7MB in the beginning and 102.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 655.63ms. Allocated memory is still 130.0MB. Free memory was 102.4MB in the beginning and 70.1MB in the end (delta: 32.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3309.79ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 70.1MB in the beginning and 69.1MB in the end (delta: 991.4kB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Witness Printer took 34.93ms. Allocated memory is still 159.4MB. Free memory was 69.1MB in the beginning and 66.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 253 mSDsluCounter, 491 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 527 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 161 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=4, InterpolantAutomatonStates: 79, 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, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 956 NumberOfCodeBlocks, 956 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 2631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-17 22:48:02,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE