/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:21:48,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:21:48,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:21:48,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:21:48,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:21:48,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:21:48,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:21:48,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:21:48,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:21:48,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:21:48,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:21:48,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:21:48,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:21:48,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:21:48,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:21:48,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:21:48,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:21:48,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:21:48,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:21:48,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:21:48,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:21:48,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:21:48,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:21:48,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:21:48,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:21:48,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:21:48,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:21:48,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:21:48,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:21:48,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:21:48,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:21:48,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:21:48,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:21:48,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:21:48,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:21:48,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:21:48,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:21:48,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:21:48,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:21:48,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:21:48,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:21:48,215 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-VariableLbe.epf [2023-01-27 18:21:48,240 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:21:48,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:21:48,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:21:48,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:21:48,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:21:48,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:21:48,254 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:21:48,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:21:48,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:21:48,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:48,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:21:48,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:21:48,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:21:48,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:21:48,257 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:21:48,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:21:48,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:21:48,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:21:48,612 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:21:48,613 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:21:48,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2023-01-27 18:21:50,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:21:50,500 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:21:50,505 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2023-01-27 18:21:50,517 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64467d44/a066ad574aa84bc196d84127fcd2c1fb/FLAG531caf475 [2023-01-27 18:21:50,529 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64467d44/a066ad574aa84bc196d84127fcd2c1fb [2023-01-27 18:21:50,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:21:50,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:21:50,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:50,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:21:50,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:21:50,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:50" (1/1) ... [2023-01-27 18:21:50,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575377e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:50, skipping insertion in model container [2023-01-27 18:21:50,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:50" (1/1) ... [2023-01-27 18:21:50,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:21:50,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:21:50,833 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-01-27 18:21:50,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:51,023 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:21:51,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-01-27 18:21:51,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:51,105 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:51,106 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:51,110 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:21:51,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51 WrapperNode [2023-01-27 18:21:51,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:51,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:51,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:21:51,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:21:51,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,158 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-01-27 18:21:51,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:51,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:21:51,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:21:51,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:21:51,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:21:51,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:21:51,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:21:51,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:21:51,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (1/1) ... [2023-01-27 18:21:51,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:21:51,237 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) [2023-01-27 18:21:51,242 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 [2023-01-27 18:21:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:21:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:21:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:21:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:21:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:21:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:21:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:21:51,267 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:21:51,431 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:21:51,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:21:51,645 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:21:51,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:21:51,661 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:21:51,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:51 BoogieIcfgContainer [2023-01-27 18:21:51,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:21:51,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:21:51,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:21:51,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:21:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:21:50" (1/3) ... [2023-01-27 18:21:51,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a67fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:51, skipping insertion in model container [2023-01-27 18:21:51,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:51" (2/3) ... [2023-01-27 18:21:51,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a67fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:51, skipping insertion in model container [2023-01-27 18:21:51,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:51" (3/3) ... [2023-01-27 18:21:51,725 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2023-01-27 18:21:51,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:21:51,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:21:51,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:21:51,822 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:21:51,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2023-01-27 18:21:51,897 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2023-01-27 18:21:51,897 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:51,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-27 18:21:51,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 146 flow [2023-01-27 18:21:51,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 118 flow [2023-01-27 18:21:51,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:21:51,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 56 transitions, 118 flow [2023-01-27 18:21:51,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 56 transitions, 118 flow [2023-01-27 18:21:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 118 flow [2023-01-27 18:21:51,962 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2023-01-27 18:21:51,962 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:51,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-27 18:21:51,963 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-27 18:21:55,148 INFO L134 LiptonReduction]: Checked pairs total: 1072 [2023-01-27 18:21:55,149 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-01-27 18:21:55,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:21:55,172 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11de1b4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:21:55,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 18:21:55,178 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-01-27 18:21:55,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:55,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:55,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 18:21:55,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:21:55,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1596367963, now seen corresponding path program 1 times [2023-01-27 18:21:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726140681] [2023-01-27 18:21:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:55,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:55,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726140681] [2023-01-27 18:21:55,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726140681] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:55,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:55,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:21:55,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117074509] [2023-01-27 18:21:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:55,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 117 [2023-01-27 18:21:55,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:55,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 117 [2023-01-27 18:21:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:55,926 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-01-27 18:21:55,927 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:21:55,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 46 events. 16/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 5 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 90. Up to 31 conditions per place. [2023-01-27 18:21:55,939 INFO L137 encePairwiseOnDemand]: 112/117 looper letters, 13 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-01-27 18:21:55,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 77 flow [2023-01-27 18:21:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-01-27 18:21:55,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584045584045584 [2023-01-27 18:21:55,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-01-27 18:21:55,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-01-27 18:21:55,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:55,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-01-27 18:21:55,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,974 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 196 transitions. [2023-01-27 18:21:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 77 flow [2023-01-27 18:21:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:55,977 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-01-27 18:21:55,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-01-27 18:21:55,980 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-01-27 18:21:55,980 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-01-27 18:21:55,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:55,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:55,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:21:55,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:21:55,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1280414647, now seen corresponding path program 1 times [2023-01-27 18:21:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:55,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519660266] [2023-01-27 18:21:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:56,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519660266] [2023-01-27 18:21:56,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519660266] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:56,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:56,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526036000] [2023-01-27 18:21:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:56,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 117 [2023-01-27 18:21:56,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:56,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 117 [2023-01-27 18:21:56,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:56,380 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-01-27 18:21:56,380 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-27 18:21:56,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 30 events. 8/30 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 73. Up to 12 conditions per place. [2023-01-27 18:21:56,381 INFO L137 encePairwiseOnDemand]: 113/117 looper letters, 11 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-01-27 18:21:56,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 89 flow [2023-01-27 18:21:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-01-27 18:21:56,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405982905982906 [2023-01-27 18:21:56,402 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-01-27 18:21:56,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-01-27 18:21:56,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:56,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-01-27 18:21:56,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,406 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 4 states and 253 transitions. [2023-01-27 18:21:56,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 89 flow [2023-01-27 18:21:56,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:56,406 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 60 flow [2023-01-27 18:21:56,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-01-27 18:21:56,407 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-01-27 18:21:56,407 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 60 flow [2023-01-27 18:21:56,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:56,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:21:56,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:21:56,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1935446159, now seen corresponding path program 1 times [2023-01-27 18:21:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028073996] [2023-01-27 18:21:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:56,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028073996] [2023-01-27 18:21:56,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028073996] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:56,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:56,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:21:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391987016] [2023-01-27 18:21:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:21:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:21:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:21:56,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 117 [2023-01-27 18:21:56,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:56,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 117 [2023-01-27 18:21:56,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:56,941 INFO L130 PetriNetUnfolder]: 16/50 cut-off events. [2023-01-27 18:21:56,941 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 18:21:56,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 50 events. 16/50 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 6 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 142. Up to 20 conditions per place. [2023-01-27 18:21:56,942 INFO L137 encePairwiseOnDemand]: 114/117 looper letters, 14 selfloop transitions, 1 changer transitions 8/23 dead transitions. [2023-01-27 18:21:56,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 153 flow [2023-01-27 18:21:56,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-01-27 18:21:56,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2023-01-27 18:21:56,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-01-27 18:21:56,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-01-27 18:21:56,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:56,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-01-27 18:21:56,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,945 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 60 flow. Second operand 4 states and 244 transitions. [2023-01-27 18:21:56,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 153 flow [2023-01-27 18:21:56,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 134 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:56,946 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 57 flow [2023-01-27 18:21:56,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2023-01-27 18:21:56,946 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-27 18:21:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 57 flow [2023-01-27 18:21:56,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:56,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:21:56,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:21:56,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1198263261, now seen corresponding path program 2 times [2023-01-27 18:21:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:56,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796769089] [2023-01-27 18:21:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:57,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796769089] [2023-01-27 18:21:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796769089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:57,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:57,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889470393] [2023-01-27 18:21:57,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:57,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:57,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:57,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 117 [2023-01-27 18:21:57,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:57,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 117 [2023-01-27 18:21:57,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:57,173 INFO L130 PetriNetUnfolder]: 11/39 cut-off events. [2023-01-27 18:21:57,173 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-01-27 18:21:57,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 39 events. 11/39 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 118. Up to 23 conditions per place. [2023-01-27 18:21:57,174 INFO L137 encePairwiseOnDemand]: 114/117 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-01-27 18:21:57,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 124 flow [2023-01-27 18:21:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-01-27 18:21:57,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-01-27 18:21:57,175 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-01-27 18:21:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-01-27 18:21:57,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:57,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-01-27 18:21:57,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,185 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 57 flow. Second operand 4 states and 243 transitions. [2023-01-27 18:21:57,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 124 flow [2023-01-27 18:21:57,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:57,186 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-27 18:21:57,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-27 18:21:57,187 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-27 18:21:57,188 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-27 18:21:57,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 18:21:57,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 18:21:57,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 18:21:57,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:21:57,190 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-27 18:21:57,194 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:21:57,194 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:21:57,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:21:57 BasicIcfg [2023-01-27 18:21:57,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:21:57,201 INFO L158 Benchmark]: Toolchain (without parser) took 6668.41ms. Allocated memory is still 457.2MB. Free memory was 407.5MB in the beginning and 260.4MB in the end (delta: 147.2MB). Peak memory consumption was 149.6MB. Max. memory is 16.0GB. [2023-01-27 18:21:57,201 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory is still 286.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:21:57,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.03ms. Allocated memory is still 457.2MB. Free memory was 407.2MB in the beginning and 387.6MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:21:57,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.17ms. Allocated memory is still 457.2MB. Free memory was 387.6MB in the beginning and 385.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:21:57,202 INFO L158 Benchmark]: Boogie Preprocessor took 43.30ms. Allocated memory is still 457.2MB. Free memory was 385.5MB in the beginning and 384.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:21:57,204 INFO L158 Benchmark]: RCFGBuilder took 461.02ms. Allocated memory is still 457.2MB. Free memory was 384.3MB in the beginning and 371.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 18:21:57,208 INFO L158 Benchmark]: TraceAbstraction took 5511.64ms. Allocated memory is still 457.2MB. Free memory was 370.9MB in the beginning and 260.4MB in the end (delta: 110.5MB). Peak memory consumption was 111.8MB. Max. memory is 16.0GB. [2023-01-27 18:21:57,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory is still 286.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 578.03ms. Allocated memory is still 457.2MB. Free memory was 407.2MB in the beginning and 387.6MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.17ms. Allocated memory is still 457.2MB. Free memory was 387.6MB in the beginning and 385.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.30ms. Allocated memory is still 457.2MB. Free memory was 385.5MB in the beginning and 384.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 461.02ms. Allocated memory is still 457.2MB. Free memory was 384.3MB in the beginning and 371.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5511.64ms. Allocated memory is still 457.2MB. Free memory was 370.9MB in the beginning and 260.4MB in the end (delta: 110.5MB). Peak memory consumption was 111.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 62 PlacesBefore, 19 PlacesAfterwards, 56 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1072 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 636, independent: 567, independent conditional: 0, independent unconditional: 567, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 318, independent: 299, independent conditional: 0, independent unconditional: 299, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 636, independent: 268, independent conditional: 0, independent unconditional: 268, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 318, unknown conditional: 0, unknown unconditional: 318] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 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 5 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2023-01-27 18:21:57,233 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...