/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:20:58,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:20:58,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:20:58,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:20:58,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:20:58,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:20:58,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:20:58,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:20:58,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:20:58,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:20:58,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:20:58,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:20:58,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:20:58,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:20:58,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:20:58,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:20:58,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:20:58,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:20:58,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:20:58,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:20:58,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:20:58,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:20:58,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:20:58,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:20:58,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 11:20:58,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 11:20:58,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 11:20:58,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 11:20:58,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 11:20:58,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 11:20:58,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:20:58,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:20:58,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:20:58,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:20:58,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:20:58,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:20:58,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:20:58,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:20:58,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:20:58,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:20:58,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:20:58,157 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-After.epf [2022-01-19 11:20:58,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:20:58,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:20:58,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:20:58,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:20:58,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:20:58,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:20:58,187 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:20:58,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:20:58,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:20:58,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:20:58,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:20:58,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:58,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:20:58,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:20:58,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:20:58,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:20:58,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:20:58,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:20:58,191 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:20:58,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:20:58,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:20:58,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:20:58,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:20:58,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:20:58,392 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:20:58,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-01-19 11:20:58,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f615c1e54/0595fee0334741b78cc1791f1e905658/FLAG05f78b3ad [2022-01-19 11:20:58,841 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:20:58,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-01-19 11:20:58,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f615c1e54/0595fee0334741b78cc1791f1e905658/FLAG05f78b3ad [2022-01-19 11:20:58,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f615c1e54/0595fee0334741b78cc1791f1e905658 [2022-01-19 11:20:58,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:20:58,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:20:58,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:58,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:20:58,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:20:58,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:58" (1/1) ... [2022-01-19 11:20:58,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb967b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:58, skipping insertion in model container [2022-01-19 11:20:58,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:58" (1/1) ... [2022-01-19 11:20:58,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:20:58,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:20:59,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2022-01-19 11:20:59,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:59,158 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:20:59,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2022-01-19 11:20:59,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:59,234 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:20:59,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59 WrapperNode [2022-01-19 11:20:59,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:59,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:59,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:20:59,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:20:59,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,283 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 11:20:59,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:59,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:20:59,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:20:59,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:20:59,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:20:59,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:20:59,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:20:59,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:20:59,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (1/1) ... [2022-01-19 11:20:59,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:59,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:20:59,341 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 11:20:59,364 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 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 11:20:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 11:20:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 11:20:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 11:20:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 11:20:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 11:20:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:20:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:20:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:20:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:20:59,381 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 11:20:59,452 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:20:59,453 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:20:59,552 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:20:59,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:20:59,557 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:20:59,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:59 BoogieIcfgContainer [2022-01-19 11:20:59,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:20:59,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:20:59,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:20:59,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:20:59,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:20:58" (1/3) ... [2022-01-19 11:20:59,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fff468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:59, skipping insertion in model container [2022-01-19 11:20:59,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:59" (2/3) ... [2022-01-19 11:20:59,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fff468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:59, skipping insertion in model container [2022-01-19 11:20:59,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:59" (3/3) ... [2022-01-19 11:20:59,564 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2022-01-19 11:20:59,567 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:20:59,567 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:20:59,567 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:20:59,605 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,606 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,608 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,608 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,608 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,609 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,609 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,609 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,609 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,609 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,610 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,611 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,611 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,611 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,611 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,611 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,612 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,612 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,612 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,616 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,616 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,618 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,620 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,621 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,622 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,622 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,622 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,622 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:59,623 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 11:20:59,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:20:59,666 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 11:20:59,667 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 11:20:59,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 11:20:59,712 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 11:20:59,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:59,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 11:20:59,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 11:20:59,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 11:20:59,731 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 11:20:59,731 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:59,731 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:59,732 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] [2022-01-19 11:20:59,732 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 11:20:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1402349347, now seen corresponding path program 1 times [2022-01-19 11:20:59,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:59,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413359895] [2022-01-19 11:20:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:59,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:00,169 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 11:21:00,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:00,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413359895] [2022-01-19 11:21:00,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413359895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:00,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:00,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:00,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308786132] [2022-01-19 11:21:00,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:00,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:00,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:00,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 11:21:00,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 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 11:21:00,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:00,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 11:21:00,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:00,521 INFO L129 PetriNetUnfolder]: 178/538 cut-off events. [2022-01-19 11:21:00,521 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 11:21:00,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 538 events. 178/538 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2934 event pairs, 26 based on Foata normal form. 19/535 useless extension candidates. Maximal degree in co-relation 848. Up to 117 conditions per place. [2022-01-19 11:21:00,531 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 5 changer transitions 35/117 dead transitions. [2022-01-19 11:21:00,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 361 flow [2022-01-19 11:21:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1001 transitions. [2022-01-19 11:21:00,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-01-19 11:21:00,555 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1001 transitions. [2022-01-19 11:21:00,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1001 transitions. [2022-01-19 11:21:00,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:00,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1001 transitions. [2022-01-19 11:21:00,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.0) internal successors, (1001), 13 states have internal predecessors, (1001), 0 states have call successors, (0), 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 11:21:00,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:00,577 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:00,579 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 1001 transitions. [2022-01-19 11:21:00,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 361 flow [2022-01-19 11:21:00,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 358 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 11:21:00,586 INFO L242 Difference]: Finished difference. Result has 105 places, 77 transitions, 226 flow [2022-01-19 11:21:00,588 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2022-01-19 11:21:00,591 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-01-19 11:21:00,591 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 226 flow [2022-01-19 11:21:00,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 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 11:21:00,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:00,592 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] [2022-01-19 11:21:00,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:21:00,593 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 11:21:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1317688226, now seen corresponding path program 1 times [2022-01-19 11:21:00,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:00,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546273172] [2022-01-19 11:21:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:00,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:00,728 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 11:21:00,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546273172] [2022-01-19 11:21:00,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546273172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:00,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:00,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:00,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546676204] [2022-01-19 11:21:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:00,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:00,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 11:21:00,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 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 11:21:00,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:00,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 11:21:00,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:00,971 INFO L129 PetriNetUnfolder]: 99/416 cut-off events. [2022-01-19 11:21:00,972 INFO L130 PetriNetUnfolder]: For 834/875 co-relation queries the response was YES. [2022-01-19 11:21:00,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 416 events. 99/416 cut-off events. For 834/875 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2175 event pairs, 15 based on Foata normal form. 13/417 useless extension candidates. Maximal degree in co-relation 1149. Up to 95 conditions per place. [2022-01-19 11:21:00,976 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 21 selfloop transitions, 12 changer transitions 34/125 dead transitions. [2022-01-19 11:21:00,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 708 flow [2022-01-19 11:21:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1003 transitions. [2022-01-19 11:21:00,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386287625418061 [2022-01-19 11:21:00,978 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1003 transitions. [2022-01-19 11:21:00,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1003 transitions. [2022-01-19 11:21:00,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:00,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1003 transitions. [2022-01-19 11:21:00,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.15384615384616) internal successors, (1003), 13 states have internal predecessors, (1003), 0 states have call successors, (0), 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 11:21:00,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:00,983 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:00,983 INFO L186 Difference]: Start difference. First operand has 105 places, 77 transitions, 226 flow. Second operand 13 states and 1003 transitions. [2022-01-19 11:21:00,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 708 flow [2022-01-19 11:21:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 125 transitions, 656 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-01-19 11:21:00,993 INFO L242 Difference]: Finished difference. Result has 115 places, 82 transitions, 315 flow [2022-01-19 11:21:00,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=315, PETRI_PLACES=115, PETRI_TRANSITIONS=82} [2022-01-19 11:21:00,994 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 31 predicate places. [2022-01-19 11:21:00,994 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 82 transitions, 315 flow [2022-01-19 11:21:00,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 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 11:21:00,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:00,995 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] [2022-01-19 11:21:00,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:21:00,996 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 11:21:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1980734781, now seen corresponding path program 1 times [2022-01-19 11:21:00,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:00,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639272769] [2022-01-19 11:21:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:00,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:01,102 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 11:21:01,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:01,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639272769] [2022-01-19 11:21:01,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639272769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:01,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:01,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:01,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557785696] [2022-01-19 11:21:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:01,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:01,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:01,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:01,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 82 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 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 11:21:01,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:01,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:01,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:01,268 INFO L129 PetriNetUnfolder]: 56/358 cut-off events. [2022-01-19 11:21:01,268 INFO L130 PetriNetUnfolder]: For 769/878 co-relation queries the response was YES. [2022-01-19 11:21:01,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 358 events. 56/358 cut-off events. For 769/878 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1930 event pairs, 24 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 881. Up to 63 conditions per place. [2022-01-19 11:21:01,271 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 5 changer transitions 16/96 dead transitions. [2022-01-19 11:21:01,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 456 flow [2022-01-19 11:21:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:21:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:21:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-19 11:21:01,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-01-19 11:21:01,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-19 11:21:01,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-19 11:21:01,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:01,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-19 11:21:01,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 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 11:21:01,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 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 11:21:01,277 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 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 11:21:01,277 INFO L186 Difference]: Start difference. First operand has 115 places, 82 transitions, 315 flow. Second operand 10 states and 778 transitions. [2022-01-19 11:21:01,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 456 flow [2022-01-19 11:21:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 402 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-01-19 11:21:01,282 INFO L242 Difference]: Finished difference. Result has 111 places, 79 transitions, 287 flow [2022-01-19 11:21:01,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=287, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2022-01-19 11:21:01,284 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2022-01-19 11:21:01,284 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 287 flow [2022-01-19 11:21:01,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 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 11:21:01,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:01,285 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] [2022-01-19 11:21:01,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:21:01,289 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 11:21:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1129215263, now seen corresponding path program 1 times [2022-01-19 11:21:01,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:01,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612313711] [2022-01-19 11:21:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:01,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:01,396 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 11:21:01,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:01,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612313711] [2022-01-19 11:21:01,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612313711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:01,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:01,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:21:01,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801274616] [2022-01-19 11:21:01,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:21:01,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:21:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:21:01,401 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:01,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 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 11:21:01,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:01,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:01,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:01,533 INFO L129 PetriNetUnfolder]: 318/854 cut-off events. [2022-01-19 11:21:01,533 INFO L130 PetriNetUnfolder]: For 446/461 co-relation queries the response was YES. [2022-01-19 11:21:01,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 854 events. 318/854 cut-off events. For 446/461 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5873 event pairs, 20 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 1721. Up to 223 conditions per place. [2022-01-19 11:21:01,539 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 15 changer transitions 5/111 dead transitions. [2022-01-19 11:21:01,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 447 flow [2022-01-19 11:21:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:21:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:21:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-01-19 11:21:01,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-01-19 11:21:01,544 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-01-19 11:21:01,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-01-19 11:21:01,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:01,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-01-19 11:21:01,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 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 11:21:01,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 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 11:21:01,547 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 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 11:21:01,547 INFO L186 Difference]: Start difference. First operand has 111 places, 79 transitions, 287 flow. Second operand 10 states and 798 transitions. [2022-01-19 11:21:01,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 447 flow [2022-01-19 11:21:01,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 396 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-01-19 11:21:01,552 INFO L242 Difference]: Finished difference. Result has 109 places, 92 transitions, 345 flow [2022-01-19 11:21:01,552 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2022-01-19 11:21:01,553 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-01-19 11:21:01,553 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 345 flow [2022-01-19 11:21:01,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 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 11:21:01,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:01,554 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] [2022-01-19 11:21:01,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:21:01,554 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 11:21:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1097371036, now seen corresponding path program 1 times [2022-01-19 11:21:01,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:01,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216832450] [2022-01-19 11:21:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:01,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:01,619 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 11:21:01,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216832450] [2022-01-19 11:21:01,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216832450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:01,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:01,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:01,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061018567] [2022-01-19 11:21:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:01,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:01,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:01,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:01,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 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 11:21:01,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:01,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:01,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:01,817 INFO L129 PetriNetUnfolder]: 290/796 cut-off events. [2022-01-19 11:21:01,817 INFO L130 PetriNetUnfolder]: For 1868/2208 co-relation queries the response was YES. [2022-01-19 11:21:01,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 796 events. 290/796 cut-off events. For 1868/2208 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5516 event pairs, 4 based on Foata normal form. 61/806 useless extension candidates. Maximal degree in co-relation 2625. Up to 309 conditions per place. [2022-01-19 11:21:01,823 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 28 changer transitions 11/130 dead transitions. [2022-01-19 11:21:01,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 711 flow [2022-01-19 11:21:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-01-19 11:21:01,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-01-19 11:21:01,826 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-01-19 11:21:01,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-01-19 11:21:01,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:01,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-01-19 11:21:01,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 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 11:21:01,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:01,831 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 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 11:21:01,831 INFO L186 Difference]: Start difference. First operand has 109 places, 92 transitions, 345 flow. Second operand 13 states and 1036 transitions. [2022-01-19 11:21:01,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 711 flow [2022-01-19 11:21:01,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 130 transitions, 709 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 11:21:01,855 INFO L242 Difference]: Finished difference. Result has 126 places, 109 transitions, 569 flow [2022-01-19 11:21:01,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=569, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2022-01-19 11:21:01,855 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-01-19 11:21:01,856 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 569 flow [2022-01-19 11:21:01,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 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 11:21:01,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:01,856 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] [2022-01-19 11:21:01,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 11:21:01,856 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 11:21:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash 746187199, now seen corresponding path program 1 times [2022-01-19 11:21:01,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160578104] [2022-01-19 11:21:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:01,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:01,931 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 11:21:01,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160578104] [2022-01-19 11:21:01,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160578104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:01,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:01,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:21:01,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357698774] [2022-01-19 11:21:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:01,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:21:01,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:21:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:21:01,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 11:21:01,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 569 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:01,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:01,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 11:21:01,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:02,161 INFO L129 PetriNetUnfolder]: 210/696 cut-off events. [2022-01-19 11:21:02,161 INFO L130 PetriNetUnfolder]: For 3308/3544 co-relation queries the response was YES. [2022-01-19 11:21:02,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 696 events. 210/696 cut-off events. For 3308/3544 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5049 event pairs, 0 based on Foata normal form. 69/724 useless extension candidates. Maximal degree in co-relation 2892. Up to 231 conditions per place. [2022-01-19 11:21:02,167 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 22 selfloop transitions, 32 changer transitions 19/138 dead transitions. [2022-01-19 11:21:02,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 909 flow [2022-01-19 11:21:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 11:21:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 11:21:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-01-19 11:21:02,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-01-19 11:21:02,170 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-01-19 11:21:02,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-01-19 11:21:02,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:02,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-01-19 11:21:02,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 0 states have call successors, (0), 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 11:21:02,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 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 11:21:02,176 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 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 11:21:02,177 INFO L186 Difference]: Start difference. First operand has 126 places, 109 transitions, 569 flow. Second operand 16 states and 1258 transitions. [2022-01-19 11:21:02,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 909 flow [2022-01-19 11:21:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 824 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-19 11:21:02,192 INFO L242 Difference]: Finished difference. Result has 140 places, 110 transitions, 598 flow [2022-01-19 11:21:02,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=598, PETRI_PLACES=140, PETRI_TRANSITIONS=110} [2022-01-19 11:21:02,193 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 56 predicate places. [2022-01-19 11:21:02,193 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 110 transitions, 598 flow [2022-01-19 11:21:02,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:21:02,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:02,194 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] [2022-01-19 11:21:02,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 11:21:02,194 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 11:21:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1117817023, now seen corresponding path program 1 times [2022-01-19 11:21:02,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:02,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555757089] [2022-01-19 11:21:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:02,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:02,306 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 11:21:02,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555757089] [2022-01-19 11:21:02,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555757089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:02,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:02,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:02,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70714971] [2022-01-19 11:21:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:02,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:02,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:02,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 11:21:02,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 110 transitions, 598 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 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 11:21:02,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:02,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 11:21:02,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:02,468 INFO L129 PetriNetUnfolder]: 122/655 cut-off events. [2022-01-19 11:21:02,468 INFO L130 PetriNetUnfolder]: For 1743/1775 co-relation queries the response was YES. [2022-01-19 11:21:02,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 655 events. 122/655 cut-off events. For 1743/1775 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4967 event pairs, 0 based on Foata normal form. 3/627 useless extension candidates. Maximal degree in co-relation 2056. Up to 87 conditions per place. [2022-01-19 11:21:02,473 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2022-01-19 11:21:02,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 117 transitions, 698 flow [2022-01-19 11:21:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 11:21:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 11:21:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 589 transitions. [2022-01-19 11:21:02,474 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8002717391304348 [2022-01-19 11:21:02,475 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 589 transitions. [2022-01-19 11:21:02,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 589 transitions. [2022-01-19 11:21:02,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:02,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 589 transitions. [2022-01-19 11:21:02,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 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 11:21:02,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 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 11:21:02,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 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 11:21:02,481 INFO L186 Difference]: Start difference. First operand has 140 places, 110 transitions, 598 flow. Second operand 8 states and 589 transitions. [2022-01-19 11:21:02,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 117 transitions, 698 flow [2022-01-19 11:21:02,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 117 transitions, 601 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-01-19 11:21:02,493 INFO L242 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2022-01-19 11:21:02,493 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2022-01-19 11:21:02,494 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-01-19 11:21:02,494 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2022-01-19 11:21:02,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 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 11:21:02,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 11:21:02,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 11:21:02,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 11:21:02,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 11:21:02,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 11:21:02,501 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:21:02,503 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:21:02,503 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:21:02,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:21:02 BasicIcfg [2022-01-19 11:21:02,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:21:02,506 INFO L158 Benchmark]: Toolchain (without parser) took 3627.12ms. Allocated memory was 360.7MB in the beginning and 467.7MB in the end (delta: 107.0MB). Free memory was 301.9MB in the beginning and 301.4MB in the end (delta: 511.5kB). Peak memory consumption was 107.7MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,510 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 319.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:21:02,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.41ms. Allocated memory was 360.7MB in the beginning and 467.7MB in the end (delta: 107.0MB). Free memory was 301.8MB in the beginning and 428.0MB in the end (delta: -126.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 467.7MB. Free memory was 428.0MB in the beginning and 426.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,511 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 467.7MB. Free memory was 426.4MB in the beginning and 424.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,511 INFO L158 Benchmark]: RCFGBuilder took 244.60ms. Allocated memory is still 467.7MB. Free memory was 424.3MB in the beginning and 411.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,511 INFO L158 Benchmark]: TraceAbstraction took 2945.48ms. Allocated memory is still 467.7MB. Free memory was 411.2MB in the beginning and 301.4MB in the end (delta: 109.8MB). Peak memory consumption was 111.9MB. Max. memory is 16.0GB. [2022-01-19 11:21:02,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 319.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 355.41ms. Allocated memory was 360.7MB in the beginning and 467.7MB in the end (delta: 107.0MB). Free memory was 301.8MB in the beginning and 428.0MB in the end (delta: -126.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 467.7MB. Free memory was 428.0MB in the beginning and 426.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 467.7MB. Free memory was 426.4MB in the beginning and 424.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 244.60ms. Allocated memory is still 467.7MB. Free memory was 424.3MB in the beginning and 411.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2945.48ms. Allocated memory is still 467.7MB. Free memory was 411.2MB in the beginning and 301.4MB in the end (delta: 109.8MB). Peak memory consumption was 111.9MB. 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 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: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 284 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 284 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 357 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 442 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 82 mSDtfsCounter, 442 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=598occurred in iteration=6, InterpolantAutomatonStates: 83, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 11:21:02,562 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...