/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:58:45,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:58:45,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:58:45,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:58:45,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:58:45,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:58:45,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:58:45,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:58:45,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:58:45,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:58:45,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:58:45,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:58:45,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:58:45,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:58:45,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:58:45,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:58:45,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:58:45,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:58:45,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:58:45,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:58:45,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:58:45,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:58:45,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:58:45,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:58:45,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:58:45,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:58:45,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:58:45,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:58:45,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:58:45,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:58:45,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:58:45,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:58:45,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:58:45,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:58:45,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:58:45,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:58:45,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:58:45,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:58:45,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:58:45,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:58:45,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:58:45,600 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 [2023-01-28 06:58:45,618 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:58:45,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:58:45,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:58:45,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:58:45,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:58:45,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:58:45,619 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:58:45,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:58:45,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:58:45,623 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:58:45,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:58:45,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:58:45,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:58:45,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:58:45,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:58:45,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:58:45,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:58:45,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:58:45,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:58:45,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:58:45,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:58:45,814 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:58:45,815 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:58:45,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-28 06:58:46,732 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:58:46,898 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:58:46,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-28 06:58:46,907 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f75acb8/27f97ec6a99f4fc890e0e666eaeb9025/FLAG98ec69527 [2023-01-28 06:58:46,916 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f75acb8/27f97ec6a99f4fc890e0e666eaeb9025 [2023-01-28 06:58:46,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:58:46,918 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:58:46,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:58:46,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:58:46,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:58:46,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:58:46" (1/1) ... [2023-01-28 06:58:46,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52855fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:46, skipping insertion in model container [2023-01-28 06:58:46,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:58:46" (1/1) ... [2023-01-28 06:58:46,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:58:46,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:58:47,050 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-01-28 06:58:47,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:58:47,211 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:58:47,219 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-01-28 06:58:47,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:58:47,297 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:58:47,297 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:58:47,302 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:58:47,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47 WrapperNode [2023-01-28 06:58:47,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:58:47,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:58:47,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:58:47,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:58:47,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,354 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-01-28 06:58:47,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:58:47,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:58:47,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:58:47,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:58:47,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:58:47,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:58:47,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:58:47,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:58:47,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (1/1) ... [2023-01-28 06:58:47,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:58:47,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:58:47,406 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) [2023-01-28 06:58:47,408 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 [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:58:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 06:58:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 06:58:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 06:58:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 06:58:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:58:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 06:58:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:58:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:58:47,434 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:58:47,596 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:58:47,597 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:58:47,825 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:58:47,920 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:58:47,920 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 06:58:47,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:58:47 BoogieIcfgContainer [2023-01-28 06:58:47,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:58:47,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:58:47,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:58:47,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:58:47,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:58:46" (1/3) ... [2023-01-28 06:58:47,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:58:47, skipping insertion in model container [2023-01-28 06:58:47,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:58:47" (2/3) ... [2023-01-28 06:58:47,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421d397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:58:47, skipping insertion in model container [2023-01-28 06:58:47,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:58:47" (3/3) ... [2023-01-28 06:58:47,929 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-28 06:58:47,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:58:47,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:58:47,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:58:47,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:58:48,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-01-28 06:58:48,057 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-01-28 06:58:48,057 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:48,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-01-28 06:58:48,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-01-28 06:58:48,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-01-28 06:58:48,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:58:48,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-01-28 06:58:48,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-01-28 06:58:48,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-01-28 06:58:48,112 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-01-28 06:58:48,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:48,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-01-28 06:58:48,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-01-28 06:58:51,357 INFO L134 LiptonReduction]: Checked pairs total: 3453 [2023-01-28 06:58:51,358 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-28 06:58:51,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:58:51,371 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;@263d03c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:58:51,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 06:58:51,374 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-01-28 06:58:51,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:58:51,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:51,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 06:58:51,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:51,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 469001348, now seen corresponding path program 1 times [2023-01-28 06:58:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318736574] [2023-01-28 06:58:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318736574] [2023-01-28 06:58:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318736574] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:51,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:51,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:58:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287598167] [2023-01-28 06:58:51,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:51,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:58:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:58:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:58:51,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-28 06:58:51,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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) [2023-01-28 06:58:51,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:51,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-28 06:58:51,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:51,884 INFO L130 PetriNetUnfolder]: 275/468 cut-off events. [2023-01-28 06:58:51,884 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 06:58:51,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1808 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-01-28 06:58:51,889 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-01-28 06:58:51,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-01-28 06:58:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-01-28 06:58:51,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49903660886319845 [2023-01-28 06:58:51,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-01-28 06:58:51,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-01-28 06:58:51,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:51,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-01-28 06:58:51,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-01-28 06:58:51,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:51,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:51,916 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 259 transitions. [2023-01-28 06:58:51,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-01-28 06:58:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:51,918 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-01-28 06:58:51,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-01-28 06:58:51,922 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 06:58:51,923 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-01-28 06:58:51,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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) [2023-01-28 06:58:51,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:51,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:58:51,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:51,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -261224281, now seen corresponding path program 1 times [2023-01-28 06:58:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:51,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245939190] [2023-01-28 06:58:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245939190] [2023-01-28 06:58:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245939190] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:52,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:58:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908355716] [2023-01-28 06:58:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:58:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:58:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:58:52,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-28 06:58:52,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2023-01-28 06:58:52,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:52,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-28 06:58:52,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:52,653 INFO L130 PetriNetUnfolder]: 182/321 cut-off events. [2023-01-28 06:58:52,653 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 06:58:52,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1109 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-01-28 06:58:52,655 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-28 06:58:52,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-01-28 06:58:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-01-28 06:58:52,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43352601156069365 [2023-01-28 06:58:52,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-01-28 06:58:52,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-01-28 06:58:52,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:52,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-01-28 06:58:52,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-01-28 06:58:52,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:52,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:52,658 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 225 transitions. [2023-01-28 06:58:52,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-01-28 06:58:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:52,659 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-01-28 06:58:52,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-01-28 06:58:52,659 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 06:58:52,660 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-01-28 06:58:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2023-01-28 06:58:52,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:52,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:58:52,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:52,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1688167736, now seen corresponding path program 1 times [2023-01-28 06:58:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448478315] [2023-01-28 06:58:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:52,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:53,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448478315] [2023-01-28 06:58:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448478315] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:58:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390508758] [2023-01-28 06:58:53,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:53,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:58:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:58:53,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:58:53,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-28 06:58:53,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2023-01-28 06:58:53,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:53,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-28 06:58:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:53,196 INFO L130 PetriNetUnfolder]: 172/305 cut-off events. [2023-01-28 06:58:53,196 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 06:58:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1009 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-01-28 06:58:53,201 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-28 06:58:53,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-01-28 06:58:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:58:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:58:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-01-28 06:58:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296724470134875 [2023-01-28 06:58:53,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-01-28 06:58:53,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-01-28 06:58:53,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:53,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-01-28 06:58:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-01-28 06:58:53,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:53,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-01-28 06:58:53,205 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 223 transitions. [2023-01-28 06:58:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-01-28 06:58:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:53,206 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-01-28 06:58:53,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-01-28 06:58:53,207 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-28 06:58:53,209 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-01-28 06:58:53,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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) [2023-01-28 06:58:53,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:53,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:53,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:58:53,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:53,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2112271550, now seen corresponding path program 1 times [2023-01-28 06:58:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149298904] [2023-01-28 06:58:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149298904] [2023-01-28 06:58:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149298904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:54,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:58:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714646656] [2023-01-28 06:58:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:58:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:54,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:58:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:58:54,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-01-28 06:58:54,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 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) [2023-01-28 06:58:54,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:54,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-01-28 06:58:54,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:54,279 INFO L130 PetriNetUnfolder]: 211/371 cut-off events. [2023-01-28 06:58:54,279 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-28 06:58:54,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 371 events. 211/371 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1339 event pairs, 21 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 860. Up to 172 conditions per place. [2023-01-28 06:58:54,281 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-01-28 06:58:54,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 200 flow [2023-01-28 06:58:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:58:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:58:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-01-28 06:58:54,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489402697495183 [2023-01-28 06:58:54,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-01-28 06:58:54,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-01-28 06:58:54,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:54,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-01-28 06:58:54,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:54,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:54,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:54,285 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 6 states and 466 transitions. [2023-01-28 06:58:54,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 200 flow [2023-01-28 06:58:54,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:54,287 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 77 flow [2023-01-28 06:58:54,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-01-28 06:58:54,288 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-28 06:58:54,288 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 77 flow [2023-01-28 06:58:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 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) [2023-01-28 06:58:54,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:54,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:54,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:58:54,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:54,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -299346199, now seen corresponding path program 1 times [2023-01-28 06:58:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839297053] [2023-01-28 06:58:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:54,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839297053] [2023-01-28 06:58:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839297053] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:58:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910676046] [2023-01-28 06:58:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:58:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:58:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:58:54,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-01-28 06:58:54,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2023-01-28 06:58:54,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:54,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-01-28 06:58:54,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:54,985 INFO L130 PetriNetUnfolder]: 270/474 cut-off events. [2023-01-28 06:58:54,985 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-01-28 06:58:54,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 474 events. 270/474 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1841 event pairs, 21 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1220. Up to 326 conditions per place. [2023-01-28 06:58:54,987 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-01-28 06:58:54,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 271 flow [2023-01-28 06:58:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:58:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:58:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2023-01-28 06:58:54,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229287090558767 [2023-01-28 06:58:54,988 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2023-01-28 06:58:54,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2023-01-28 06:58:54,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:54,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2023-01-28 06:58:54,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-01-28 06:58:54,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:54,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:54,991 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 77 flow. Second operand 6 states and 439 transitions. [2023-01-28 06:58:54,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 271 flow [2023-01-28 06:58:54,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:58:54,993 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 198 flow [2023-01-28 06:58:54,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-01-28 06:58:54,993 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 06:58:54,993 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 198 flow [2023-01-28 06:58:54,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2023-01-28 06:58:54,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:54,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:54,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:58:54,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:54,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 483559013, now seen corresponding path program 2 times [2023-01-28 06:58:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273691051] [2023-01-28 06:58:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:54,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273691051] [2023-01-28 06:58:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273691051] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:58:55,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334639341] [2023-01-28 06:58:55,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:55,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:58:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:58:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:58:55,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-01-28 06:58:55,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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) [2023-01-28 06:58:55,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:55,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-01-28 06:58:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:55,468 INFO L130 PetriNetUnfolder]: 355/633 cut-off events. [2023-01-28 06:58:55,469 INFO L131 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2023-01-28 06:58:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 633 events. 355/633 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2777 event pairs, 61 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 2076. Up to 267 conditions per place. [2023-01-28 06:58:55,471 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 27 selfloop transitions, 13 changer transitions 30/70 dead transitions. [2023-01-28 06:58:55,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 472 flow [2023-01-28 06:58:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:58:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:58:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-01-28 06:58:55,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-01-28 06:58:55,473 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-01-28 06:58:55,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-01-28 06:58:55,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:55,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-01-28 06:58:55,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:58:55,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:55,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 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) [2023-01-28 06:58:55,475 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 198 flow. Second operand 6 states and 486 transitions. [2023-01-28 06:58:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 472 flow [2023-01-28 06:58:55,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:58:55,478 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 246 flow [2023-01-28 06:58:55,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-28 06:58:55,479 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-01-28 06:58:55,479 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 246 flow [2023-01-28 06:58:55,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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) [2023-01-28 06:58:55,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:55,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:58:55,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:55,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1611175819, now seen corresponding path program 3 times [2023-01-28 06:58:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611509085] [2023-01-28 06:58:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611509085] [2023-01-28 06:58:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611509085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:58:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690154135] [2023-01-28 06:58:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:56,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:58:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:56,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:58:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:58:56,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-28 06:58:56,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2023-01-28 06:58:56,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:56,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-28 06:58:56,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:56,372 INFO L130 PetriNetUnfolder]: 225/454 cut-off events. [2023-01-28 06:58:56,372 INFO L131 PetriNetUnfolder]: For 1209/1209 co-relation queries the response was YES. [2023-01-28 06:58:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 454 events. 225/454 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2037 event pairs, 35 based on Foata normal form. 9/463 useless extension candidates. Maximal degree in co-relation 1843. Up to 242 conditions per place. [2023-01-28 06:58:56,374 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 45 selfloop transitions, 27 changer transitions 17/89 dead transitions. [2023-01-28 06:58:56,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 739 flow [2023-01-28 06:58:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 06:58:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 06:58:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 932 transitions. [2023-01-28 06:58:56,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144064028457092 [2023-01-28 06:58:56,377 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 932 transitions. [2023-01-28 06:58:56,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 932 transitions. [2023-01-28 06:58:56,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:56,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 932 transitions. [2023-01-28 06:58:56,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.6923076923077) internal successors, (932), 13 states have internal predecessors, (932), 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) [2023-01-28 06:58:56,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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) [2023-01-28 06:58:56,381 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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) [2023-01-28 06:58:56,382 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 246 flow. Second operand 13 states and 932 transitions. [2023-01-28 06:58:56,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 739 flow [2023-01-28 06:58:56,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 669 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 06:58:56,389 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 442 flow [2023-01-28 06:58:56,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=442, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-01-28 06:58:56,390 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-01-28 06:58:56,390 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 442 flow [2023-01-28 06:58:56,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2023-01-28 06:58:56,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:56,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:56,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:58:56,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:56,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168937, now seen corresponding path program 4 times [2023-01-28 06:58:56,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:56,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489610311] [2023-01-28 06:58:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:56,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:56,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489610311] [2023-01-28 06:58:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489610311] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:56,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:58:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442630185] [2023-01-28 06:58:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:56,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:58:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:58:56,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:58:56,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-28 06:58:56,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 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) [2023-01-28 06:58:56,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:56,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-28 06:58:56,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:56,945 INFO L130 PetriNetUnfolder]: 223/442 cut-off events. [2023-01-28 06:58:56,946 INFO L131 PetriNetUnfolder]: For 1509/1509 co-relation queries the response was YES. [2023-01-28 06:58:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 442 events. 223/442 cut-off events. For 1509/1509 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1933 event pairs, 32 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1977. Up to 268 conditions per place. [2023-01-28 06:58:56,948 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 24 changer transitions 2/64 dead transitions. [2023-01-28 06:58:56,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 657 flow [2023-01-28 06:58:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:58:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:58:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-01-28 06:58:56,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44971098265895953 [2023-01-28 06:58:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-01-28 06:58:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-01-28 06:58:56,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:56,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-01-28 06:58:56,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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) [2023-01-28 06:58:56,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-01-28 06:58:56,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-01-28 06:58:56,952 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 442 flow. Second operand 5 states and 389 transitions. [2023-01-28 06:58:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 657 flow [2023-01-28 06:58:56,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 613 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:56,957 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 556 flow [2023-01-28 06:58:56,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-01-28 06:58:56,959 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-01-28 06:58:56,959 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 556 flow [2023-01-28 06:58:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 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) [2023-01-28 06:58:56,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:56,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:56,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:58:56,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:56,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash -607369889, now seen corresponding path program 5 times [2023-01-28 06:58:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:56,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973413604] [2023-01-28 06:58:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973413604] [2023-01-28 06:58:57,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973413604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:57,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:58:57,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868492023] [2023-01-28 06:58:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:58:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:58:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:58:57,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-01-28 06:58:57,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 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) [2023-01-28 06:58:57,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:57,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-01-28 06:58:57,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:57,799 INFO L130 PetriNetUnfolder]: 253/497 cut-off events. [2023-01-28 06:58:57,800 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2023-01-28 06:58:57,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 497 events. 253/497 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2278 event pairs, 57 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 2301. Up to 254 conditions per place. [2023-01-28 06:58:57,803 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 55 selfloop transitions, 33 changer transitions 3/91 dead transitions. [2023-01-28 06:58:57,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 991 flow [2023-01-28 06:58:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:58:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:58:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 595 transitions. [2023-01-28 06:58:57,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42991329479768786 [2023-01-28 06:58:57,805 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 595 transitions. [2023-01-28 06:58:57,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 595 transitions. [2023-01-28 06:58:57,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:57,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 595 transitions. [2023-01-28 06:58:57,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 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) [2023-01-28 06:58:57,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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) [2023-01-28 06:58:57,809 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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) [2023-01-28 06:58:57,809 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 556 flow. Second operand 8 states and 595 transitions. [2023-01-28 06:58:57,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 991 flow [2023-01-28 06:58:57,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 977 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 06:58:57,816 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 796 flow [2023-01-28 06:58:57,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-01-28 06:58:57,817 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-01-28 06:58:57,817 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 796 flow [2023-01-28 06:58:57,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 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) [2023-01-28 06:58:57,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:57,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 06:58:57,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:57,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -264639987, now seen corresponding path program 6 times [2023-01-28 06:58:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050371712] [2023-01-28 06:58:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050371712] [2023-01-28 06:58:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050371712] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:58,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:58:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74707641] [2023-01-28 06:58:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:58:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:58:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:58:58,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-01-28 06:58:58,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2023-01-28 06:58:58,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:58,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-01-28 06:58:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:59,023 INFO L130 PetriNetUnfolder]: 249/492 cut-off events. [2023-01-28 06:58:59,023 INFO L131 PetriNetUnfolder]: For 2676/2676 co-relation queries the response was YES. [2023-01-28 06:58:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 492 events. 249/492 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2253 event pairs, 63 based on Foata normal form. 5/497 useless extension candidates. Maximal degree in co-relation 2482. Up to 259 conditions per place. [2023-01-28 06:58:59,026 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 64 selfloop transitions, 29 changer transitions 2/95 dead transitions. [2023-01-28 06:58:59,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 1145 flow [2023-01-28 06:58:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:58:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:58:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 660 transitions. [2023-01-28 06:58:59,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238921001926782 [2023-01-28 06:58:59,028 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 660 transitions. [2023-01-28 06:58:59,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 660 transitions. [2023-01-28 06:58:59,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:59,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 660 transitions. [2023-01-28 06:58:59,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 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) [2023-01-28 06:58:59,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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) [2023-01-28 06:58:59,031 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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) [2023-01-28 06:58:59,031 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 796 flow. Second operand 9 states and 660 transitions. [2023-01-28 06:58:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 1145 flow [2023-01-28 06:58:59,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 1115 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-01-28 06:58:59,040 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 910 flow [2023-01-28 06:58:59,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-01-28 06:58:59,041 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-01-28 06:58:59,041 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 910 flow [2023-01-28 06:58:59,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2023-01-28 06:58:59,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:59,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 06:58:59,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:59,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:59,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2118468119, now seen corresponding path program 1 times [2023-01-28 06:58:59,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:59,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603082036] [2023-01-28 06:58:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:59,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:58:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:58:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:58:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603082036] [2023-01-28 06:58:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603082036] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:58:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:58:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:58:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819392808] [2023-01-28 06:58:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:58:59,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:58:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:58:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:58:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:58:59,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-01-28 06:58:59,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 69.55555555555556) internal successors, (626), 9 states have internal predecessors, (626), 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) [2023-01-28 06:58:59,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:58:59,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-01-28 06:58:59,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:58:59,867 INFO L130 PetriNetUnfolder]: 252/504 cut-off events. [2023-01-28 06:58:59,867 INFO L131 PetriNetUnfolder]: For 3538/3538 co-relation queries the response was YES. [2023-01-28 06:58:59,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 504 events. 252/504 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2328 event pairs, 48 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2698. Up to 292 conditions per place. [2023-01-28 06:58:59,871 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 30 changer transitions 10/98 dead transitions. [2023-01-28 06:58:59,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 1233 flow [2023-01-28 06:58:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:58:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:58:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 671 transitions. [2023-01-28 06:58:59,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309569685292229 [2023-01-28 06:58:59,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 671 transitions. [2023-01-28 06:58:59,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 671 transitions. [2023-01-28 06:58:59,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:58:59,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 671 transitions. [2023-01-28 06:58:59,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 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) [2023-01-28 06:58:59,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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) [2023-01-28 06:58:59,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 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) [2023-01-28 06:58:59,877 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 910 flow. Second operand 9 states and 671 transitions. [2023-01-28 06:58:59,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 1233 flow [2023-01-28 06:58:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 1161 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 06:58:59,886 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 917 flow [2023-01-28 06:58:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-01-28 06:58:59,886 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-28 06:58:59,887 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 917 flow [2023-01-28 06:58:59,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.55555555555556) internal successors, (626), 9 states have internal predecessors, (626), 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) [2023-01-28 06:58:59,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:58:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:58:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 06:58:59,887 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:58:59,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:58:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash -518458967, now seen corresponding path program 2 times [2023-01-28 06:58:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:58:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506682450] [2023-01-28 06:58:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:58:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:58:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:00,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:00,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506682450] [2023-01-28 06:59:00,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506682450] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:00,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:00,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 06:59:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795006768] [2023-01-28 06:59:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 06:59:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 06:59:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-01-28 06:59:00,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 173 [2023-01-28 06:59:00,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 60.27272727272727) internal successors, (663), 11 states have internal predecessors, (663), 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) [2023-01-28 06:59:00,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:00,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 173 [2023-01-28 06:59:00,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:01,148 INFO L130 PetriNetUnfolder]: 284/573 cut-off events. [2023-01-28 06:59:01,148 INFO L131 PetriNetUnfolder]: For 3932/3932 co-relation queries the response was YES. [2023-01-28 06:59:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 573 events. 284/573 cut-off events. For 3932/3932 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2792 event pairs, 39 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 3089. Up to 348 conditions per place. [2023-01-28 06:59:01,152 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 48/127 dead transitions. [2023-01-28 06:59:01,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 1619 flow [2023-01-28 06:59:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:59:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:59:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 784 transitions. [2023-01-28 06:59:01,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37764932562620424 [2023-01-28 06:59:01,154 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 784 transitions. [2023-01-28 06:59:01,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 784 transitions. [2023-01-28 06:59:01,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:01,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 784 transitions. [2023-01-28 06:59:01,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.33333333333333) internal successors, (784), 12 states have internal predecessors, (784), 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) [2023-01-28 06:59:01,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 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) [2023-01-28 06:59:01,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 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) [2023-01-28 06:59:01,159 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 917 flow. Second operand 12 states and 784 transitions. [2023-01-28 06:59:01,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 1619 flow [2023-01-28 06:59:01,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 1567 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 06:59:01,168 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 910 flow [2023-01-28 06:59:01,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=910, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-01-28 06:59:01,169 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-01-28 06:59:01,169 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 910 flow [2023-01-28 06:59:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.27272727272727) internal successors, (663), 11 states have internal predecessors, (663), 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) [2023-01-28 06:59:01,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:01,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:01,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 06:59:01,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:59:01,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1506747961, now seen corresponding path program 3 times [2023-01-28 06:59:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:01,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737731057] [2023-01-28 06:59:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:01,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:02,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:02,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737731057] [2023-01-28 06:59:02,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737731057] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:02,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:02,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:59:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825757277] [2023-01-28 06:59:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:02,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:59:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:59:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:59:02,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-28 06:59:02,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 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) [2023-01-28 06:59:02,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:02,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-28 06:59:02,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:02,194 INFO L130 PetriNetUnfolder]: 179/370 cut-off events. [2023-01-28 06:59:02,195 INFO L131 PetriNetUnfolder]: For 3139/3139 co-relation queries the response was YES. [2023-01-28 06:59:02,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 370 events. 179/370 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1563 event pairs, 29 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 2302. Up to 269 conditions per place. [2023-01-28 06:59:02,197 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 49 selfloop transitions, 22 changer transitions 13/84 dead transitions. [2023-01-28 06:59:02,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 1172 flow [2023-01-28 06:59:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:59:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:59:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2023-01-28 06:59:02,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186622625928984 [2023-01-28 06:59:02,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 507 transitions. [2023-01-28 06:59:02,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 507 transitions. [2023-01-28 06:59:02,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:02,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 507 transitions. [2023-01-28 06:59:02,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2023-01-28 06:59:02,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:02,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:02,202 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 910 flow. Second operand 7 states and 507 transitions. [2023-01-28 06:59:02,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 1172 flow [2023-01-28 06:59:02,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 1085 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-01-28 06:59:02,213 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 803 flow [2023-01-28 06:59:02,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=803, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-01-28 06:59:02,214 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-01-28 06:59:02,214 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 803 flow [2023-01-28 06:59:02,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 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) [2023-01-28 06:59:02,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:02,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 06:59:02,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:59:02,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 385804551, now seen corresponding path program 4 times [2023-01-28 06:59:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15805976] [2023-01-28 06:59:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:02,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15805976] [2023-01-28 06:59:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15805976] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:02,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:02,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:59:02,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891998639] [2023-01-28 06:59:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:02,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:59:02,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:59:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:59:02,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-28 06:59:02,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 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) [2023-01-28 06:59:02,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:02,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-28 06:59:02,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:03,210 INFO L130 PetriNetUnfolder]: 191/395 cut-off events. [2023-01-28 06:59:03,210 INFO L131 PetriNetUnfolder]: For 3040/3040 co-relation queries the response was YES. [2023-01-28 06:59:03,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 395 events. 191/395 cut-off events. For 3040/3040 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1696 event pairs, 23 based on Foata normal form. 10/405 useless extension candidates. Maximal degree in co-relation 2205. Up to 117 conditions per place. [2023-01-28 06:59:03,220 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 48 selfloop transitions, 12 changer transitions 41/101 dead transitions. [2023-01-28 06:59:03,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1237 flow [2023-01-28 06:59:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:59:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:59:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 858 transitions. [2023-01-28 06:59:03,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41329479768786126 [2023-01-28 06:59:03,223 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 858 transitions. [2023-01-28 06:59:03,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 858 transitions. [2023-01-28 06:59:03,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:03,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 858 transitions. [2023-01-28 06:59:03,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 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) [2023-01-28 06:59:03,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 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) [2023-01-28 06:59:03,227 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 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) [2023-01-28 06:59:03,227 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 803 flow. Second operand 12 states and 858 transitions. [2023-01-28 06:59:03,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1237 flow [2023-01-28 06:59:03,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1146 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-01-28 06:59:03,233 INFO L231 Difference]: Finished difference. Result has 90 places, 43 transitions, 515 flow [2023-01-28 06:59:03,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=43} [2023-01-28 06:59:03,234 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-01-28 06:59:03,234 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 43 transitions, 515 flow [2023-01-28 06:59:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 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) [2023-01-28 06:59:03,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:03,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:03,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 06:59:03,235 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:59:03,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1893787813, now seen corresponding path program 1 times [2023-01-28 06:59:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:03,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073484533] [2023-01-28 06:59:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:03,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073484533] [2023-01-28 06:59:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073484533] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:03,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:59:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361293155] [2023-01-28 06:59:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:03,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:59:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:59:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:59:03,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-28 06:59:03,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 43 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2023-01-28 06:59:03,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:03,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-28 06:59:03,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:03,791 INFO L130 PetriNetUnfolder]: 76/183 cut-off events. [2023-01-28 06:59:03,791 INFO L131 PetriNetUnfolder]: For 2068/2068 co-relation queries the response was YES. [2023-01-28 06:59:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 183 events. 76/183 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 626 event pairs, 27 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 1047. Up to 92 conditions per place. [2023-01-28 06:59:03,792 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 30 selfloop transitions, 10 changer transitions 18/58 dead transitions. [2023-01-28 06:59:03,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 775 flow [2023-01-28 06:59:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:59:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:59:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-01-28 06:59:03,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44178364987613544 [2023-01-28 06:59:03,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-01-28 06:59:03,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-01-28 06:59:03,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:03,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-01-28 06:59:03,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 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) [2023-01-28 06:59:03,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:03,797 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:03,797 INFO L175 Difference]: Start difference. First operand has 90 places, 43 transitions, 515 flow. Second operand 7 states and 535 transitions. [2023-01-28 06:59:03,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 775 flow [2023-01-28 06:59:03,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 604 flow, removed 53 selfloop flow, removed 23 redundant places. [2023-01-28 06:59:03,801 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 367 flow [2023-01-28 06:59:03,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2023-01-28 06:59:03,802 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-01-28 06:59:03,802 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 367 flow [2023-01-28 06:59:03,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2023-01-28 06:59:03,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:59:03,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:59:03,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 06:59:03,802 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:59:03,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:59:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -916025961, now seen corresponding path program 2 times [2023-01-28 06:59:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:59:03,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808531221] [2023-01-28 06:59:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:59:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:59:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:59:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:59:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:59:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808531221] [2023-01-28 06:59:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808531221] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:59:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:59:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:59:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065710947] [2023-01-28 06:59:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:59:04,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:59:04,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:59:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:59:04,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:59:04,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-28 06:59:04,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2023-01-28 06:59:04,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:59:04,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-28 06:59:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:59:04,283 INFO L130 PetriNetUnfolder]: 39/104 cut-off events. [2023-01-28 06:59:04,283 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-01-28 06:59:04,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 104 events. 39/104 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 15 based on Foata normal form. 10/114 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-01-28 06:59:04,283 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-01-28 06:59:04,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 425 flow [2023-01-28 06:59:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:59:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:59:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-01-28 06:59:04,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435177539223782 [2023-01-28 06:59:04,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-01-28 06:59:04,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-01-28 06:59:04,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:59:04,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-01-28 06:59:04,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2023-01-28 06:59:04,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:04,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-01-28 06:59:04,287 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 367 flow. Second operand 7 states and 527 transitions. [2023-01-28 06:59:04,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 425 flow [2023-01-28 06:59:04,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 355 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-01-28 06:59:04,289 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-01-28 06:59:04,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-01-28 06:59:04,289 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-01-28 06:59:04,289 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-01-28 06:59:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2023-01-28 06:59:04,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 06:59:04,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-28 06:59:04,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 06:59:04,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 06:59:04,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-28 06:59:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 06:59:04,292 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1, 1, 1] [2023-01-28 06:59:04,297 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:59:04,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:59:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:59:04 BasicIcfg [2023-01-28 06:59:04,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:59:04,301 INFO L158 Benchmark]: Toolchain (without parser) took 17382.55ms. Allocated memory was 343.9MB in the beginning and 717.2MB in the end (delta: 373.3MB). Free memory was 289.5MB in the beginning and 562.4MB in the end (delta: -272.9MB). Peak memory consumption was 102.8MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,301 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:59:04,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.66ms. Allocated memory is still 343.9MB. Free memory was 289.3MB in the beginning and 309.6MB in the end (delta: -20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.14ms. Allocated memory is still 343.9MB. Free memory was 309.6MB in the beginning and 306.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,301 INFO L158 Benchmark]: Boogie Preprocessor took 20.50ms. Allocated memory is still 343.9MB. Free memory was 306.4MB in the beginning and 304.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,302 INFO L158 Benchmark]: RCFGBuilder took 546.30ms. Allocated memory is still 343.9MB. Free memory was 304.3MB in the beginning and 254.5MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,302 INFO L158 Benchmark]: TraceAbstraction took 16376.65ms. Allocated memory was 343.9MB in the beginning and 717.2MB in the end (delta: 373.3MB). Free memory was 254.0MB in the beginning and 562.4MB in the end (delta: -308.4MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. [2023-01-28 06:59:04,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 255.9MB. Free memory is still 212.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 383.66ms. Allocated memory is still 343.9MB. Free memory was 289.3MB in the beginning and 309.6MB in the end (delta: -20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.14ms. Allocated memory is still 343.9MB. Free memory was 309.6MB in the beginning and 306.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.50ms. Allocated memory is still 343.9MB. Free memory was 306.4MB in the beginning and 304.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 546.30ms. Allocated memory is still 343.9MB. Free memory was 304.3MB in the beginning and 254.5MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. * TraceAbstraction took 16376.65ms. Allocated memory was 343.9MB in the beginning and 717.2MB in the end (delta: 373.3MB). Free memory was 254.0MB in the beginning and 562.4MB in the end (delta: -308.4MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 95 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 19 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1492, independent: 1333, independent conditional: 0, independent unconditional: 1333, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1492, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 113 locations, 5 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: 16.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 360 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1832 IncrementalHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 0 mSDtfsCounter, 1832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred in iteration=11, InterpolantAutomatonStates: 116, 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, 0.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 3111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 06:59:04,319 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...