/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-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 01:21:14,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 01:21:14,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 01:21:14,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 01:21:14,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 01:21:14,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 01:21:14,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 01:21:14,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 01:21:14,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 01:21:14,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 01:21:14,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 01:21:14,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 01:21:14,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 01:21:14,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 01:21:14,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 01:21:14,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 01:21:14,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 01:21:14,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 01:21:14,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 01:21:14,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 01:21:14,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 01:21:14,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 01:21:14,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 01:21:14,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 01:21:14,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 01:21:14,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 01:21:14,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 01:21:14,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 01:21:14,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 01:21:14,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 01:21:14,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 01:21:14,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 01:21:14,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 01:21:14,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 01:21:14,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 01:21:14,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 01:21:14,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 01:21:14,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 01:21:14,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 01:21:14,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 01:21:14,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 01:21:14,257 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 01:21:14,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 01:21:14,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 01:21:14,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 01:21:14,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 01:21:14,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 01:21:14,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 01:21:14,273 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 01:21:14,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 01:21:14,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 01:21:14,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 01:21:14,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 01:21:14,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 01:21:14,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:21:14,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 01:21:14,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 01:21:14,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 01:21:14,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 01:21:14,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 01:21:14,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 01:21:14,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 01:21:14,472 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 01:21:14,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-01-19 01:21:14,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405b4bcd/7fbd69ffa4e24558b29a1c70ee4f7af3/FLAG364c5d6e8 [2022-01-19 01:21:14,885 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 01:21:14,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-01-19 01:21:14,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405b4bcd/7fbd69ffa4e24558b29a1c70ee4f7af3/FLAG364c5d6e8 [2022-01-19 01:21:14,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f405b4bcd/7fbd69ffa4e24558b29a1c70ee4f7af3 [2022-01-19 01:21:14,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 01:21:14,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 01:21:14,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 01:21:14,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 01:21:14,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 01:21:14,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:21:14" (1/1) ... [2022-01-19 01:21:14,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:14, skipping insertion in model container [2022-01-19 01:21:14,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:21:14" (1/1) ... [2022-01-19 01:21:14,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 01:21:14,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 01:21:15,093 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-simple-equiv.wvr.c[2212,2225] [2022-01-19 01:21:15,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:21:15,102 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 01:21:15,122 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-simple-equiv.wvr.c[2212,2225] [2022-01-19 01:21:15,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:21:15,137 INFO L208 MainTranslator]: Completed translation [2022-01-19 01:21:15,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15 WrapperNode [2022-01-19 01:21:15,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 01:21:15,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 01:21:15,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 01:21:15,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 01:21:15,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,170 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 01:21:15,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 01:21:15,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 01:21:15,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 01:21:15,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 01:21:15,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 01:21:15,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 01:21:15,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 01:21:15,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 01:21:15,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (1/1) ... [2022-01-19 01:21:15,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:21:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:21:15,240 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 01:21:15,257 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 01:21:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 01:21:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 01:21:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 01:21:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 01:21:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 01:21:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 01:21:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 01:21:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 01:21:15,275 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 01:21:15,323 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 01:21:15,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 01:21:15,462 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 01:21:15,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 01:21:15,497 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 01:21:15,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:21:15 BoogieIcfgContainer [2022-01-19 01:21:15,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 01:21:15,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 01:21:15,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 01:21:15,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 01:21:15,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:21:14" (1/3) ... [2022-01-19 01:21:15,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b7efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:21:15, skipping insertion in model container [2022-01-19 01:21:15,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:21:15" (2/3) ... [2022-01-19 01:21:15,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b7efad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:21:15, skipping insertion in model container [2022-01-19 01:21:15,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:21:15" (3/3) ... [2022-01-19 01:21:15,503 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-01-19 01:21:15,506 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 01:21:15,506 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 01:21:15,506 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 01:21:15,544 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,544 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,544 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,549 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,549 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:21:15,554 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 01:21:15,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 01:21:15,585 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 01:21:15,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 01:21:15,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2022-01-19 01:21:15,646 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-01-19 01:21:15,646 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 01:21:15,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-01-19 01:21:15,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2022-01-19 01:21:15,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2022-01-19 01:21:15,681 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2022-01-19 01:21:15,681 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 01:21:15,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:15,682 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] [2022-01-19 01:21:15,683 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 01:21:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2022-01-19 01:21:15,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089135482] [2022-01-19 01:21:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:15,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:16,352 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 01:21:16,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:16,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089135482] [2022-01-19 01:21:16,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089135482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:16,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:16,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 01:21:16,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905518009] [2022-01-19 01:21:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:16,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:21:16,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:21:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:21:16,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 01:21:16,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:16,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:16,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 01:21:16,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:17,122 INFO L129 PetriNetUnfolder]: 47/216 cut-off events. [2022-01-19 01:21:17,122 INFO L130 PetriNetUnfolder]: For 79/85 co-relation queries the response was YES. [2022-01-19 01:21:17,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 216 events. 47/216 cut-off events. For 79/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 23 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 246. Up to 85 conditions per place. [2022-01-19 01:21:17,128 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2022-01-19 01:21:17,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2022-01-19 01:21:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 01:21:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 01:21:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2022-01-19 01:21:17,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2022-01-19 01:21:17,144 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2022-01-19 01:21:17,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2022-01-19 01:21:17,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:17,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2022-01-19 01:21:17,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 0 states have call successors, (0), 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 01:21:17,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:17,157 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:17,159 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2022-01-19 01:21:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2022-01-19 01:21:17,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 01:21:17,164 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2022-01-19 01:21:17,165 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2022-01-19 01:21:17,167 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2022-01-19 01:21:17,167 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2022-01-19 01:21:17,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:17,168 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:17,168 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 01:21:17,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 01:21:17,168 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 01:21:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2022-01-19 01:21:17,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489487154] [2022-01-19 01:21:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:17,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:17,430 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 01:21:17,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:17,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489487154] [2022-01-19 01:21:17,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489487154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:17,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:17,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 01:21:17,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492312691] [2022-01-19 01:21:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:17,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:21:17,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:21:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:21:17,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 01:21:17,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:17,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:17,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 01:21:17,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:17,779 INFO L129 PetriNetUnfolder]: 61/265 cut-off events. [2022-01-19 01:21:17,780 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-01-19 01:21:17,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 265 events. 61/265 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 1 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 554. Up to 71 conditions per place. [2022-01-19 01:21:17,782 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2022-01-19 01:21:17,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2022-01-19 01:21:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 01:21:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 01:21:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2022-01-19 01:21:17,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2022-01-19 01:21:17,784 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2022-01-19 01:21:17,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2022-01-19 01:21:17,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:17,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2022-01-19 01:21:17,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 0 states have call successors, (0), 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 01:21:17,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:17,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:17,789 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2022-01-19 01:21:17,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2022-01-19 01:21:17,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-01-19 01:21:17,793 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2022-01-19 01:21:17,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2022-01-19 01:21:17,794 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2022-01-19 01:21:17,794 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2022-01-19 01:21:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:17,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:17,795 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] [2022-01-19 01:21:17,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 01:21:17,795 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 01:21:17,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2028188250, now seen corresponding path program 3 times [2022-01-19 01:21:17,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:17,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557091682] [2022-01-19 01:21:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:17,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:18,058 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 01:21:18,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:18,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557091682] [2022-01-19 01:21:18,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557091682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:18,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:18,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 01:21:18,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000400086] [2022-01-19 01:21:18,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:18,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:21:18,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:21:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:21:18,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 01:21:18,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:18,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:18,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 01:21:18,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:18,367 INFO L129 PetriNetUnfolder]: 53/276 cut-off events. [2022-01-19 01:21:18,368 INFO L130 PetriNetUnfolder]: For 212/220 co-relation queries the response was YES. [2022-01-19 01:21:18,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 276 events. 53/276 cut-off events. For 212/220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1173 event pairs, 4 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 666. Up to 49 conditions per place. [2022-01-19 01:21:18,370 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2022-01-19 01:21:18,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2022-01-19 01:21:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 01:21:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 01:21:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2022-01-19 01:21:18,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2022-01-19 01:21:18,376 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2022-01-19 01:21:18,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2022-01-19 01:21:18,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:18,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2022-01-19 01:21:18,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 0 states have call successors, (0), 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 01:21:18,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:18,380 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:18,380 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2022-01-19 01:21:18,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2022-01-19 01:21:18,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-01-19 01:21:18,385 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2022-01-19 01:21:18,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2022-01-19 01:21:18,385 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2022-01-19 01:21:18,386 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2022-01-19 01:21:18,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:18,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:18,386 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] [2022-01-19 01:21:18,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 01:21:18,386 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 01:21:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash -203117776, now seen corresponding path program 4 times [2022-01-19 01:21:18,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:18,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202759110] [2022-01-19 01:21:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:18,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:18,608 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 01:21:18,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202759110] [2022-01-19 01:21:18,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202759110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:18,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:18,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 01:21:18,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434091974] [2022-01-19 01:21:18,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:18,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:21:18,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:21:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:21:18,611 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 01:21:18,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:18,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:18,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 01:21:18,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:18,842 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2022-01-19 01:21:18,842 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-01-19 01:21:18,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 343 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2022-01-19 01:21:18,843 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2022-01-19 01:21:18,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2022-01-19 01:21:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 01:21:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 01:21:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2022-01-19 01:21:18,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2022-01-19 01:21:18,848 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2022-01-19 01:21:18,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2022-01-19 01:21:18,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:18,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2022-01-19 01:21:18,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 0 states have call successors, (0), 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 01:21:18,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:18,851 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 01:21:18,851 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2022-01-19 01:21:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2022-01-19 01:21:18,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-01-19 01:21:18,854 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2022-01-19 01:21:18,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2022-01-19 01:21:18,855 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2022-01-19 01:21:18,855 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2022-01-19 01:21:18,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:18,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:21:18,856 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] [2022-01-19 01:21:18,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 01:21:18,856 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 01:21:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:21:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1982401284, now seen corresponding path program 5 times [2022-01-19 01:21:18,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:21:18,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819180460] [2022-01-19 01:21:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:21:18,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:21:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:21:19,057 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 01:21:19,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:21:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819180460] [2022-01-19 01:21:19,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819180460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:21:19,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:21:19,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 01:21:19,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595167489] [2022-01-19 01:21:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:21:19,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:21:19,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:21:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:21:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:21:19,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 01:21:19,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:19,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:21:19,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 01:21:19,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:21:19,296 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2022-01-19 01:21:19,296 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-01-19 01:21:19,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2022-01-19 01:21:19,296 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-01-19 01:21:19,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2022-01-19 01:21:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 01:21:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 01:21:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2022-01-19 01:21:19,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2022-01-19 01:21:19,298 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2022-01-19 01:21:19,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2022-01-19 01:21:19,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:21:19,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2022-01-19 01:21:19,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 0 states have call successors, (0), 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 01:21:19,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 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 01:21:19,302 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 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 01:21:19,302 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2022-01-19 01:21:19,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2022-01-19 01:21:19,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-01-19 01:21:19,303 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-01-19 01:21:19,303 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-01-19 01:21:19,304 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2022-01-19 01:21:19,304 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-01-19 01:21:19,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 01:21:19,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 01:21:19,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 01:21:19,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 01:21:19,307 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 01:21:19,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 01:21:19,309 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2022-01-19 01:21:19,310 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 01:21:19,310 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 01:21:19,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:21:19 BasicIcfg [2022-01-19 01:21:19,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 01:21:19,313 INFO L158 Benchmark]: Toolchain (without parser) took 4400.75ms. Allocated memory was 413.1MB in the beginning and 497.0MB in the end (delta: 83.9MB). Free memory was 359.7MB in the beginning and 375.3MB in the end (delta: -15.6MB). Peak memory consumption was 70.3MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,313 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 413.1MB. Free memory is still 376.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:21:19,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.70ms. Allocated memory was 413.1MB in the beginning and 497.0MB in the end (delta: 83.9MB). Free memory was 359.5MB in the beginning and 470.2MB in the end (delta: -110.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.15ms. Allocated memory is still 497.0MB. Free memory was 470.2MB in the beginning and 468.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,314 INFO L158 Benchmark]: Boogie Preprocessor took 27.74ms. Allocated memory is still 497.0MB. Free memory was 468.1MB in the beginning and 467.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,314 INFO L158 Benchmark]: RCFGBuilder took 299.16ms. Allocated memory is still 497.0MB. Free memory was 467.1MB in the beginning and 452.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,315 INFO L158 Benchmark]: TraceAbstraction took 3813.23ms. Allocated memory is still 497.0MB. Free memory was 451.4MB in the beginning and 375.3MB in the end (delta: 76.0MB). Peak memory consumption was 79.2MB. Max. memory is 16.0GB. [2022-01-19 01:21:19,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 413.1MB. Free memory is still 376.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 224.70ms. Allocated memory was 413.1MB in the beginning and 497.0MB in the end (delta: 83.9MB). Free memory was 359.5MB in the beginning and 470.2MB in the end (delta: -110.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.15ms. Allocated memory is still 497.0MB. Free memory was 470.2MB in the beginning and 468.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.74ms. Allocated memory is still 497.0MB. Free memory was 468.1MB in the beginning and 467.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 299.16ms. Allocated memory is still 497.0MB. Free memory was 467.1MB in the beginning and 452.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3813.23ms. Allocated memory is still 497.0MB. Free memory was 451.4MB in the beginning and 375.3MB in the end (delta: 76.0MB). Peak memory consumption was 79.2MB. 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: 82]: 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, 111 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: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 564 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1278 IncrementalHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 57 mSDtfsCounter, 1278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, 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, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 6464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 01:21:19,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...