/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 01:21:27,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 01:21:27,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 01:21:27,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 01:21:27,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 01:21:27,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 01:21:27,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 01:21:27,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 01:21:27,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 01:21:27,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 01:21:27,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 01:21:27,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 01:21:27,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 01:21:27,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 01:21:27,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 01:21:27,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 01:21:27,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 01:21:27,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 01:21:27,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 01:21:27,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 01:21:27,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 01:21:27,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 01:21:27,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 01:21:27,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 01:21:27,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 01:21:27,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 01:21:27,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 01:21:27,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 01:21:27,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 01:21:27,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 01:21:27,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 01:21:27,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 01:21:27,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 01:21:27,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 01:21:27,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 01:21:27,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 01:21:27,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 01:21:27,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 01:21:27,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 01:21:27,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 01:21:27,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 01:21:27,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 01:21:27,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 01:21:27,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 01:21:27,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 01:21:27,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 01:21:27,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 01:21:27,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 01:21:27,271 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 01:21:27,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 01:21:27,271 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 01:21:27,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 01:21:27,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 01:21:27,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 01:21:27,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 01:21:27,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 01:21:27,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:21:27,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 01:21:27,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 01:21:27,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 01:21:27,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 01:21:27,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 01:21:27,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 01:21:27,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 01:21:27,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 01:21:27,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 01:21:27,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 01:21:27,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 01:21:27,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 01:21:27,463 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 01:21:27,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2022-01-19 01:21:27,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa10b2c9c/66837e014fb5438ab9cbe0897cbe8734/FLAG4c6531759 [2022-01-19 01:21:27,886 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 01:21:27,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2022-01-19 01:21:27,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa10b2c9c/66837e014fb5438ab9cbe0897cbe8734/FLAG4c6531759 [2022-01-19 01:21:27,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa10b2c9c/66837e014fb5438ab9cbe0897cbe8734 [2022-01-19 01:21:27,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 01:21:27,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 01:21:27,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 01:21:27,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 01:21:27,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 01:21:27,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:21:27" (1/1) ... [2022-01-19 01:21:27,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee032f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:27, skipping insertion in model container [2022-01-19 01:21:27,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:21:27" (1/1) ... [2022-01-19 01:21:27,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 01:21:27,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 01:21:28,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-01-19 01:21:28,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:21:28,069 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 01:21:28,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-01-19 01:21:28,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:21:28,092 INFO L208 MainTranslator]: Completed translation [2022-01-19 01:21:28,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28 WrapperNode [2022-01-19 01:21:28,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 01:21:28,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 01:21:28,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 01:21:28,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 01:21:28,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,126 INFO L137 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2022-01-19 01:21:28,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 01:21:28,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 01:21:28,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 01:21:28,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 01:21:28,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 01:21:28,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 01:21:28,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 01:21:28,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 01:21:28,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (1/1) ... [2022-01-19 01:21:28,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:21:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:21:28,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 01:21:28,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 01:21:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 01:21:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 01:21:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 01:21:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 01:21:28,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 01:21:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 01:21:28,209 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 01:21:28,270 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 01:21:28,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 01:21:28,447 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 01:21:28,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 01:21:28,485 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 01:21:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:21:28 BoogieIcfgContainer [2022-01-19 01:21:28,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 01:21:28,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 01:21:28,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 01:21:28,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 01:21:28,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:21:27" (1/3) ... [2022-01-19 01:21:28,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8c0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:21:28, skipping insertion in model container [2022-01-19 01:21:28,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:28" (2/3) ... [2022-01-19 01:21:28,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea8c0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:21:28, skipping insertion in model container [2022-01-19 01:21:28,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:21:28" (3/3) ... [2022-01-19 01:21:28,501 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2022-01-19 01:21:28,505 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 01:21:28,505 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 01:21:28,505 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 01:21:28,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,552 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,560 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,562 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,562 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,562 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,563 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,563 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,563 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:28,571 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 01:21:28,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 01:21:28,621 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=false, 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 [2022-01-19 01:21:28,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 01:21:28,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2022-01-19 01:21:28,687 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2022-01-19 01:21:28,687 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 01:21:28,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 2/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-01-19 01:21:28,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2022-01-19 01:21:28,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 105 transitions, 228 flow [2022-01-19 01:21:28,728 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2022-01-19 01:21:28,728 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 01:21:28,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:28,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:28,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash -38046997, now seen corresponding path program 1 times [2022-01-19 01:21:28,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:28,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657222162] [2022-01-19 01:21:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:28,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:29,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657222162] [2022-01-19 01:21:29,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657222162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:29,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:29,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-19 01:21:29,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531915764] [2022-01-19 01:21:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:29,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 01:21:29,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 01:21:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 01:21:29,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-01-19 01:21:29,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 80.08333333333333) internal successors, (961), 12 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:29,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:29,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-01-19 01:21:29,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:29,955 INFO L129 PetriNetUnfolder]: 439/1079 cut-off events. [2022-01-19 01:21:29,955 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-01-19 01:21:29,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1079 events. 439/1079 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5930 event pairs, 214 based on Foata normal form. 4/1047 useless extension candidates. Maximal degree in co-relation 1512. Up to 317 conditions per place. [2022-01-19 01:21:29,965 INFO L132 encePairwiseOnDemand]: 99/119 looper letters, 62 selfloop transitions, 19 changer transitions 26/171 dead transitions. [2022-01-19 01:21:29,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 171 transitions, 610 flow [2022-01-19 01:21:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 01:21:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 01:21:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1345 transitions. [2022-01-19 01:21:29,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7064075630252101 [2022-01-19 01:21:29,984 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1345 transitions. [2022-01-19 01:21:29,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1345 transitions. [2022-01-19 01:21:29,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:29,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1345 transitions. [2022-01-19 01:21:29,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 84.0625) internal successors, (1345), 16 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,003 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,005 INFO L186 Difference]: Start difference. First operand has 113 places, 105 transitions, 228 flow. Second operand 16 states and 1345 transitions. [2022-01-19 01:21:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 171 transitions, 610 flow [2022-01-19 01:21:30,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 01:21:30,017 INFO L242 Difference]: Finished difference. Result has 131 places, 114 transitions, 322 flow [2022-01-19 01:21:30,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=322, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2022-01-19 01:21:30,021 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 18 predicate places. [2022-01-19 01:21:30,021 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 322 flow [2022-01-19 01:21:30,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.08333333333333) internal successors, (961), 12 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:30,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:30,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 01:21:30,023 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1859360431, now seen corresponding path program 2 times [2022-01-19 01:21:30,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288349619] [2022-01-19 01:21:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:30,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:30,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:30,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288349619] [2022-01-19 01:21:30,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288349619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:30,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:30,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 01:21:30,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721946967] [2022-01-19 01:21:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:30,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 01:21:30,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 01:21:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 01:21:30,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-01-19 01:21:30,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:30,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-01-19 01:21:30,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:30,493 INFO L129 PetriNetUnfolder]: 380/990 cut-off events. [2022-01-19 01:21:30,493 INFO L130 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-01-19 01:21:30,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 990 events. 380/990 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5647 event pairs, 109 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 2167. Up to 326 conditions per place. [2022-01-19 01:21:30,500 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 43 selfloop transitions, 10 changer transitions 27/150 dead transitions. [2022-01-19 01:21:30,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 150 transitions, 610 flow [2022-01-19 01:21:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:21:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:21:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 899 transitions. [2022-01-19 01:21:30,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7554621848739496 [2022-01-19 01:21:30,503 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 899 transitions. [2022-01-19 01:21:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 899 transitions. [2022-01-19 01:21:30,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:30,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 899 transitions. [2022-01-19 01:21:30,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,508 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,508 INFO L186 Difference]: Start difference. First operand has 131 places, 114 transitions, 322 flow. Second operand 10 states and 899 transitions. [2022-01-19 01:21:30,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 150 transitions, 610 flow [2022-01-19 01:21:30,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 582 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-01-19 01:21:30,515 INFO L242 Difference]: Finished difference. Result has 130 places, 116 transitions, 352 flow [2022-01-19 01:21:30,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2022-01-19 01:21:30,516 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 17 predicate places. [2022-01-19 01:21:30,516 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 352 flow [2022-01-19 01:21:30,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:30,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:30,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 01:21:30,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -200941397, now seen corresponding path program 3 times [2022-01-19 01:21:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378375742] [2022-01-19 01:21:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:30,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:30,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378375742] [2022-01-19 01:21:30,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378375742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:30,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:30,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 01:21:30,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354247133] [2022-01-19 01:21:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:30,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 01:21:30,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 01:21:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 01:21:30,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-01-19 01:21:30,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:30,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-01-19 01:21:30,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:30,812 INFO L129 PetriNetUnfolder]: 196/640 cut-off events. [2022-01-19 01:21:30,812 INFO L130 PetriNetUnfolder]: For 325/332 co-relation queries the response was YES. [2022-01-19 01:21:30,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 640 events. 196/640 cut-off events. For 325/332 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3346 event pairs, 30 based on Foata normal form. 13/629 useless extension candidates. Maximal degree in co-relation 1412. Up to 133 conditions per place. [2022-01-19 01:21:30,817 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 45 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2022-01-19 01:21:30,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 151 transitions, 598 flow [2022-01-19 01:21:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 01:21:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 01:21:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2022-01-19 01:21:30,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2022-01-19 01:21:30,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2022-01-19 01:21:30,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2022-01-19 01:21:30,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:30,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2022-01-19 01:21:30,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,824 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,824 INFO L186 Difference]: Start difference. First operand has 130 places, 116 transitions, 352 flow. Second operand 8 states and 744 transitions. [2022-01-19 01:21:30,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 151 transitions, 598 flow [2022-01-19 01:21:30,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 151 transitions, 568 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 01:21:30,854 INFO L242 Difference]: Finished difference. Result has 126 places, 130 transitions, 429 flow [2022-01-19 01:21:30,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=429, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2022-01-19 01:21:30,856 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 13 predicate places. [2022-01-19 01:21:30,857 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 429 flow [2022-01-19 01:21:30,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:30,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:30,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 01:21:30,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2098425681, now seen corresponding path program 4 times [2022-01-19 01:21:30,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:30,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829783551] [2022-01-19 01:21:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:30,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:30,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829783551] [2022-01-19 01:21:30,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829783551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:30,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:30,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:21:30,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329607398] [2022-01-19 01:21:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:30,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:21:30,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:21:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:21:30,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-01-19 01:21:30,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:30,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:30,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-01-19 01:21:30,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:31,086 INFO L129 PetriNetUnfolder]: 179/701 cut-off events. [2022-01-19 01:21:31,086 INFO L130 PetriNetUnfolder]: For 571/596 co-relation queries the response was YES. [2022-01-19 01:21:31,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 701 events. 179/701 cut-off events. For 571/596 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4132 event pairs, 46 based on Foata normal form. 36/710 useless extension candidates. Maximal degree in co-relation 872. Up to 125 conditions per place. [2022-01-19 01:21:31,091 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 48 selfloop transitions, 26 changer transitions 0/156 dead transitions. [2022-01-19 01:21:31,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 156 transitions, 687 flow [2022-01-19 01:21:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:21:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:21:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-01-19 01:21:31,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7839135654261705 [2022-01-19 01:21:31,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-01-19 01:21:31,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-01-19 01:21:31,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:31,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-01-19 01:21:31,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,095 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,095 INFO L186 Difference]: Start difference. First operand has 126 places, 130 transitions, 429 flow. Second operand 7 states and 653 transitions. [2022-01-19 01:21:31,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 156 transitions, 687 flow [2022-01-19 01:21:31,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 156 transitions, 657 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-01-19 01:21:31,101 INFO L242 Difference]: Finished difference. Result has 131 places, 140 transitions, 546 flow [2022-01-19 01:21:31,101 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=131, PETRI_TRANSITIONS=140} [2022-01-19 01:21:31,102 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 18 predicate places. [2022-01-19 01:21:31,102 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 140 transitions, 546 flow [2022-01-19 01:21:31,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:31,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 01:21:31,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1795902233, now seen corresponding path program 5 times [2022-01-19 01:21:31,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:31,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411175813] [2022-01-19 01:21:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:31,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:31,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:31,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411175813] [2022-01-19 01:21:31,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411175813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:31,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:31,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:21:31,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498403142] [2022-01-19 01:21:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:31,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:21:31,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:21:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:21:31,187 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-01-19 01:21:31,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 140 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:31,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-01-19 01:21:31,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:31,312 INFO L129 PetriNetUnfolder]: 151/629 cut-off events. [2022-01-19 01:21:31,312 INFO L130 PetriNetUnfolder]: For 847/883 co-relation queries the response was YES. [2022-01-19 01:21:31,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 629 events. 151/629 cut-off events. For 847/883 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3551 event pairs, 44 based on Foata normal form. 36/642 useless extension candidates. Maximal degree in co-relation 808. Up to 112 conditions per place. [2022-01-19 01:21:31,316 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 46 selfloop transitions, 26 changer transitions 5/158 dead transitions. [2022-01-19 01:21:31,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 158 transitions, 788 flow [2022-01-19 01:21:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:21:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:21:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 654 transitions. [2022-01-19 01:21:31,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7851140456182473 [2022-01-19 01:21:31,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 654 transitions. [2022-01-19 01:21:31,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 654 transitions. [2022-01-19 01:21:31,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:31,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 654 transitions. [2022-01-19 01:21:31,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,322 INFO L186 Difference]: Start difference. First operand has 131 places, 140 transitions, 546 flow. Second operand 7 states and 654 transitions. [2022-01-19 01:21:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 158 transitions, 788 flow [2022-01-19 01:21:31,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 158 transitions, 764 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-01-19 01:21:31,326 INFO L242 Difference]: Finished difference. Result has 135 places, 139 transitions, 577 flow [2022-01-19 01:21:31,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=135, PETRI_TRANSITIONS=139} [2022-01-19 01:21:31,328 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 22 predicate places. [2022-01-19 01:21:31,328 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 139 transitions, 577 flow [2022-01-19 01:21:31,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,328 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:31,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:31,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 01:21:31,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1422402101, now seen corresponding path program 6 times [2022-01-19 01:21:31,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988908632] [2022-01-19 01:21:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:31,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:31,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:31,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988908632] [2022-01-19 01:21:31,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988908632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:31,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:31,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 01:21:31,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653484365] [2022-01-19 01:21:31,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 01:21:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 01:21:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 01:21:31,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-01-19 01:21:31,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 139 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:31,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-01-19 01:21:31,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:31,474 INFO L129 PetriNetUnfolder]: 44/289 cut-off events. [2022-01-19 01:21:31,474 INFO L130 PetriNetUnfolder]: For 375/399 co-relation queries the response was YES. [2022-01-19 01:21:31,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 289 events. 44/289 cut-off events. For 375/399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 986 event pairs, 5 based on Foata normal form. 23/308 useless extension candidates. Maximal degree in co-relation 455. Up to 40 conditions per place. [2022-01-19 01:21:31,476 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 38 selfloop transitions, 23 changer transitions 5/141 dead transitions. [2022-01-19 01:21:31,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 712 flow [2022-01-19 01:21:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:21:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:21:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2022-01-19 01:21:31,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7767106842737095 [2022-01-19 01:21:31,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2022-01-19 01:21:31,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2022-01-19 01:21:31,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:31,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2022-01-19 01:21:31,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,480 INFO L186 Difference]: Start difference. First operand has 135 places, 139 transitions, 577 flow. Second operand 7 states and 647 transitions. [2022-01-19 01:21:31,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 712 flow [2022-01-19 01:21:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 141 transitions, 664 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-01-19 01:21:31,483 INFO L242 Difference]: Finished difference. Result has 134 places, 126 transitions, 499 flow [2022-01-19 01:21:31,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2022-01-19 01:21:31,484 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 21 predicate places. [2022-01-19 01:21:31,484 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 499 flow [2022-01-19 01:21:31,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:31,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:31,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 01:21:31,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 307161313, now seen corresponding path program 7 times [2022-01-19 01:21:31,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:31,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724993665] [2022-01-19 01:21:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:31,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:31,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:31,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724993665] [2022-01-19 01:21:31,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724993665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:31,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:31,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 01:21:31,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679194480] [2022-01-19 01:21:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:31,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 01:21:31,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 01:21:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 01:21:31,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-01-19 01:21:31,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:31,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-01-19 01:21:31,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:31,645 INFO L129 PetriNetUnfolder]: 40/266 cut-off events. [2022-01-19 01:21:31,645 INFO L130 PetriNetUnfolder]: For 434/469 co-relation queries the response was YES. [2022-01-19 01:21:31,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 266 events. 40/266 cut-off events. For 434/469 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 817 event pairs, 5 based on Foata normal form. 15/278 useless extension candidates. Maximal degree in co-relation 416. Up to 39 conditions per place. [2022-01-19 01:21:31,647 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 40 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2022-01-19 01:21:31,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 144 transitions, 704 flow [2022-01-19 01:21:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 01:21:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 01:21:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 739 transitions. [2022-01-19 01:21:31,649 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7762605042016807 [2022-01-19 01:21:31,649 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 739 transitions. [2022-01-19 01:21:31,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 739 transitions. [2022-01-19 01:21:31,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:31,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 739 transitions. [2022-01-19 01:21:31,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.375) internal successors, (739), 8 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,653 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,653 INFO L186 Difference]: Start difference. First operand has 134 places, 126 transitions, 499 flow. Second operand 8 states and 739 transitions. [2022-01-19 01:21:31,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 144 transitions, 704 flow [2022-01-19 01:21:31,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 144 transitions, 674 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-01-19 01:21:31,657 INFO L242 Difference]: Finished difference. Result has 137 places, 124 transitions, 511 flow [2022-01-19 01:21:31,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=511, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2022-01-19 01:21:31,658 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 24 predicate places. [2022-01-19 01:21:31,658 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 511 flow [2022-01-19 01:21:31,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:31,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:31,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 01:21:31,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1232291941, now seen corresponding path program 8 times [2022-01-19 01:21:31,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:31,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304097038] [2022-01-19 01:21:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:31,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:31,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:31,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304097038] [2022-01-19 01:21:31,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304097038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:31,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:31,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 01:21:31,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675053505] [2022-01-19 01:21:31,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:31,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 01:21:31,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:31,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 01:21:31,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 01:21:31,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-01-19 01:21:31,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:31,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-01-19 01:21:31,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:31,971 INFO L129 PetriNetUnfolder]: 54/287 cut-off events. [2022-01-19 01:21:31,971 INFO L130 PetriNetUnfolder]: For 612/612 co-relation queries the response was YES. [2022-01-19 01:21:31,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 287 events. 54/287 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 865 event pairs, 5 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 490. Up to 56 conditions per place. [2022-01-19 01:21:31,973 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 54 selfloop transitions, 21 changer transitions 8/147 dead transitions. [2022-01-19 01:21:31,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 790 flow [2022-01-19 01:21:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:21:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:21:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 840 transitions. [2022-01-19 01:21:31,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2022-01-19 01:21:31,976 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 840 transitions. [2022-01-19 01:21:31,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 840 transitions. [2022-01-19 01:21:31,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:31,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 840 transitions. [2022-01-19 01:21:31,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,981 INFO L186 Difference]: Start difference. First operand has 137 places, 124 transitions, 511 flow. Second operand 10 states and 840 transitions. [2022-01-19 01:21:31,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 790 flow [2022-01-19 01:21:31,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 147 transitions, 736 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-01-19 01:21:31,985 INFO L242 Difference]: Finished difference. Result has 140 places, 122 transitions, 488 flow [2022-01-19 01:21:31,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2022-01-19 01:21:31,986 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 27 predicate places. [2022-01-19 01:21:31,986 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 488 flow [2022-01-19 01:21:31,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:31,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:31,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:31,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 01:21:31,987 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1779733505, now seen corresponding path program 9 times [2022-01-19 01:21:31,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:31,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536537900] [2022-01-19 01:21:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:31,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:32,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536537900] [2022-01-19 01:21:32,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536537900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:32,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:32,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 01:21:32,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411895471] [2022-01-19 01:21:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:32,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 01:21:32,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 01:21:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 01:21:32,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-01-19 01:21:32,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 488 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:32,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-01-19 01:21:32,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:32,317 INFO L129 PetriNetUnfolder]: 36/246 cut-off events. [2022-01-19 01:21:32,317 INFO L130 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-01-19 01:21:32,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 246 events. 36/246 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 695 event pairs, 2 based on Foata normal form. 8/250 useless extension candidates. Maximal degree in co-relation 477. Up to 36 conditions per place. [2022-01-19 01:21:32,319 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 40 selfloop transitions, 12 changer transitions 25/141 dead transitions. [2022-01-19 01:21:32,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 141 transitions, 747 flow [2022-01-19 01:21:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:21:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:21:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-01-19 01:21:32,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7067226890756303 [2022-01-19 01:21:32,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-01-19 01:21:32,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-01-19 01:21:32,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:32,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-01-19 01:21:32,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,326 INFO L186 Difference]: Start difference. First operand has 140 places, 122 transitions, 488 flow. Second operand 10 states and 841 transitions. [2022-01-19 01:21:32,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 141 transitions, 747 flow [2022-01-19 01:21:32,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 141 transitions, 684 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-01-19 01:21:32,330 INFO L242 Difference]: Finished difference. Result has 139 places, 107 transitions, 351 flow [2022-01-19 01:21:32,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=139, PETRI_TRANSITIONS=107} [2022-01-19 01:21:32,331 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 26 predicate places. [2022-01-19 01:21:32,331 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 107 transitions, 351 flow [2022-01-19 01:21:32,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,332 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:32,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:32,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 01:21:32,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 01:21:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1704188151, now seen corresponding path program 10 times [2022-01-19 01:21:32,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:32,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237837517] [2022-01-19 01:21:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:32,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:21:32,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237837517] [2022-01-19 01:21:32,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237837517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:32,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:32,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 01:21:32,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912532310] [2022-01-19 01:21:32,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:32,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 01:21:32,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 01:21:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 01:21:32,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-01-19 01:21:32,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 107 transitions, 351 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:32,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-01-19 01:21:32,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:32,610 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2022-01-19 01:21:32,610 INFO L130 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-01-19 01:21:32,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 95 events. 6/95 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 191. Up to 11 conditions per place. [2022-01-19 01:21:32,610 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 0 selfloop transitions, 0 changer transitions 87/87 dead transitions. [2022-01-19 01:21:32,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 87 transitions, 368 flow [2022-01-19 01:21:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:21:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:21:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2022-01-19 01:21:32,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6781512605042017 [2022-01-19 01:21:32,612 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2022-01-19 01:21:32,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2022-01-19 01:21:32,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:32,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2022-01-19 01:21:32,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,615 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,615 INFO L186 Difference]: Start difference. First operand has 139 places, 107 transitions, 351 flow. Second operand 10 states and 807 transitions. [2022-01-19 01:21:32,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 87 transitions, 368 flow [2022-01-19 01:21:32,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 285 flow, removed 16 selfloop flow, removed 20 redundant places. [2022-01-19 01:21:32,617 INFO L242 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2022-01-19 01:21:32,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2022-01-19 01:21:32,618 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, -14 predicate places. [2022-01-19 01:21:32,618 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2022-01-19 01:21:32,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 01:21:32,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 01:21:32,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 01:21:32,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 01:21:32,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 01:21:32,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 01:21:32,625 INFO L732 BasicCegarLoop]: Path program histogram: [10] [2022-01-19 01:21:32,626 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 01:21:32,626 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 01:21:32,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:21:32 BasicIcfg [2022-01-19 01:21:32,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 01:21:32,631 INFO L158 Benchmark]: Toolchain (without parser) took 4728.12ms. Allocated memory was 398.5MB in the beginning and 520.1MB in the end (delta: 121.6MB). Free memory was 341.1MB in the beginning and 451.2MB in the end (delta: -110.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,632 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:21:32,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.41ms. Allocated memory was 398.5MB in the beginning and 520.1MB in the end (delta: 121.6MB). Free memory was 340.9MB in the beginning and 487.9MB in the end (delta: -147.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.95ms. Allocated memory is still 520.1MB. Free memory was 487.9MB in the beginning and 486.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,633 INFO L158 Benchmark]: Boogie Preprocessor took 27.40ms. Allocated memory is still 520.1MB. Free memory was 486.9MB in the beginning and 484.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,633 INFO L158 Benchmark]: RCFGBuilder took 331.73ms. Allocated memory is still 520.1MB. Free memory was 484.8MB in the beginning and 465.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,634 INFO L158 Benchmark]: TraceAbstraction took 4140.51ms. Allocated memory is still 520.1MB. Free memory was 464.8MB in the beginning and 451.2MB in the end (delta: 13.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. [2022-01-19 01:21:32,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 357.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 192.41ms. Allocated memory was 398.5MB in the beginning and 520.1MB in the end (delta: 121.6MB). Free memory was 340.9MB in the beginning and 487.9MB in the end (delta: -147.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.95ms. Allocated memory is still 520.1MB. Free memory was 487.9MB in the beginning and 486.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.40ms. Allocated memory is still 520.1MB. Free memory was 486.9MB in the beginning and 484.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 331.73ms. Allocated memory is still 520.1MB. Free memory was 484.8MB in the beginning and 465.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 4140.51ms. Allocated memory is still 520.1MB. Free memory was 464.8MB in the beginning and 451.2MB in the end (delta: 13.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. * 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: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 143 locations, 4 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 480 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 781 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1754 IncrementalHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 169 mSDtfsCounter, 1754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=5, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 3646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 01:21:32,663 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...