/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:26:40,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:26:40,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:26:40,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:26:40,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:26:40,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:26:40,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:26:40,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:26:40,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:26:40,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:26:40,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:26:40,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:26:40,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:26:40,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:26:40,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:26:40,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:26:40,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:26:40,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:26:40,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:26:40,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:26:40,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:26:40,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:26:40,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:26:40,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:26:40,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:26:40,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:26:40,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:26:40,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:26:40,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:26:40,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:26:40,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:26:40,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:26:40,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:26:40,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:26:40,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:26:40,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:26:40,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:26:40,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:26:40,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:26:40,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:26:40,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:26:40,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:26:40,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:26:40,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:26:40,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:26:40,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:26:40,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:26:40,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:26:40,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:26:40,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:26:40,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:26:40,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:26:40,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:26:40,255 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:26:40,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:26:40,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:26:40,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:26:40,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:26:40,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:26:40,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:26:40,430 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:26:40,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:26:40,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54f542bc/39700474d88a45d2b7a6abf6b707b85a/FLAGda93ef85f [2022-09-20 22:26:40,893 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:26:40,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:26:40,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54f542bc/39700474d88a45d2b7a6abf6b707b85a/FLAGda93ef85f [2022-09-20 22:26:40,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e54f542bc/39700474d88a45d2b7a6abf6b707b85a [2022-09-20 22:26:40,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:26:40,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:26:40,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:26:40,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:26:40,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:26:40,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:26:40" (1/1) ... [2022-09-20 22:26:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d82f8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:40, skipping insertion in model container [2022-09-20 22:26:40,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:26:40" (1/1) ... [2022-09-20 22:26:40,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:26:40,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:26:41,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:26:41,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:26:41,240 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:26:41,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:26:41,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:26:41,319 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:26:41,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41 WrapperNode [2022-09-20 22:26:41,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:26:41,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:26:41,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:26:41,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:26:41,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,362 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 191 [2022-09-20 22:26:41,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:26:41,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:26:41,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:26:41,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:26:41,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:26:41,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:26:41,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:26:41,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:26:41,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (1/1) ... [2022-09-20 22:26:41,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:26:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:26:41,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:26:41,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:26:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:26:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 22:26:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:26:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 22:26:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 22:26:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 22:26:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-09-20 22:26:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 22:26:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:26:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:26:41,457 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:26:41,566 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:26:41,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:26:41,929 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:26:42,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:26:42,177 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:26:42,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:26:42 BoogieIcfgContainer [2022-09-20 22:26:42,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:26:42,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:26:42,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:26:42,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:26:42,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:26:40" (1/3) ... [2022-09-20 22:26:42,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdca30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:26:42, skipping insertion in model container [2022-09-20 22:26:42,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:26:41" (2/3) ... [2022-09-20 22:26:42,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fdca30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:26:42, skipping insertion in model container [2022-09-20 22:26:42,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:26:42" (3/3) ... [2022-09-20 22:26:42,186 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:26:42,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:26:42,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 22:26:42,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:26:42,252 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:26:42,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-09-20 22:26:42,330 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-09-20 22:26:42,330 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:26:42,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-09-20 22:26:42,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-09-20 22:26:42,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-09-20 22:26:42,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:26:42,358 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;@26b6201a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:26:42,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 22:26:42,371 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2022-09-20 22:26:42,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:26:42,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:42,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:42,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 241967491, now seen corresponding path program 1 times [2022-09-20 22:26:42,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:42,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42919888] [2022-09-20 22:26:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:42,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42919888] [2022-09-20 22:26:42,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42919888] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:42,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:42,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:26:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808316661] [2022-09-20 22:26:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:26:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:26:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:26:42,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-09-20 22:26:42,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:42,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:42,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-09-20 22:26:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:26:42,839 INFO L130 PetriNetUnfolder]: 162/546 cut-off events. [2022-09-20 22:26:42,839 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-09-20 22:26:42,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 546 events. 162/546 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2800 event pairs, 34 based on Foata normal form. 49/566 useless extension candidates. Maximal degree in co-relation 796. Up to 191 conditions per place. [2022-09-20 22:26:42,873 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-09-20 22:26:42,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-09-20 22:26:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:26:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:26:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-09-20 22:26:42,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-09-20 22:26:42,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-09-20 22:26:42,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-09-20 22:26:42,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:26:42,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-09-20 22:26:42,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:42,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:42,903 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-09-20 22:26:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-09-20 22:26:42,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:26:42,909 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-09-20 22:26:42,911 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-09-20 22:26:42,914 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-09-20 22:26:42,914 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-09-20 22:26:42,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:42,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:42,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:26:42,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash -619394308, now seen corresponding path program 1 times [2022-09-20 22:26:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:42,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939684430] [2022-09-20 22:26:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:43,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939684430] [2022-09-20 22:26:43,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939684430] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:43,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:43,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:26:43,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698428384] [2022-09-20 22:26:43,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:43,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:26:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:26:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:26:43,140 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:26:43,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:43,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:43,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:26:43,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:26:47,878 INFO L130 PetriNetUnfolder]: 21069/43826 cut-off events. [2022-09-20 22:26:47,878 INFO L131 PetriNetUnfolder]: For 1735/1735 co-relation queries the response was YES. [2022-09-20 22:26:48,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74300 conditions, 43826 events. 21069/43826 cut-off events. For 1735/1735 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 465331 event pairs, 4146 based on Foata normal form. 0/42804 useless extension candidates. Maximal degree in co-relation 74241. Up to 9439 conditions per place. [2022-09-20 22:26:48,124 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 38 selfloop transitions, 11 changer transitions 102/236 dead transitions. [2022-09-20 22:26:48,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 778 flow [2022-09-20 22:26:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:26:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:26:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1058 transitions. [2022-09-20 22:26:48,126 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8643790849673203 [2022-09-20 22:26:48,126 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1058 transitions. [2022-09-20 22:26:48,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1058 transitions. [2022-09-20 22:26:48,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:26:48,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1058 transitions. [2022-09-20 22:26:48,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.55555555555556) internal successors, (1058), 9 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:48,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:48,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:48,131 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1058 transitions. [2022-09-20 22:26:48,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 778 flow [2022-09-20 22:26:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 760 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:26:48,135 INFO L231 Difference]: Finished difference. Result has 153 places, 122 transitions, 374 flow [2022-09-20 22:26:48,136 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=374, PETRI_PLACES=153, PETRI_TRANSITIONS=122} [2022-09-20 22:26:48,136 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2022-09-20 22:26:48,136 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 122 transitions, 374 flow [2022-09-20 22:26:48,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:48,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:48,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:26:48,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash -61313541, now seen corresponding path program 1 times [2022-09-20 22:26:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:48,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832235593] [2022-09-20 22:26:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:48,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832235593] [2022-09-20 22:26:48,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832235593] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:48,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:48,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:26:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105322967] [2022-09-20 22:26:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:26:48,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:26:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:26:48,247 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:26:48,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 122 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:48,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:48,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:26:48,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:26:51,560 INFO L130 PetriNetUnfolder]: 16182/26908 cut-off events. [2022-09-20 22:26:51,560 INFO L131 PetriNetUnfolder]: For 49261/49261 co-relation queries the response was YES. [2022-09-20 22:26:51,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84430 conditions, 26908 events. 16182/26908 cut-off events. For 49261/49261 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 217528 event pairs, 1446 based on Foata normal form. 538/27018 useless extension candidates. Maximal degree in co-relation 84359. Up to 7483 conditions per place. [2022-09-20 22:26:51,776 INFO L137 encePairwiseOnDemand]: 120/136 looper letters, 49 selfloop transitions, 16 changer transitions 133/283 dead transitions. [2022-09-20 22:26:51,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 1710 flow [2022-09-20 22:26:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:26:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:26:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1503 transitions. [2022-09-20 22:26:51,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8501131221719457 [2022-09-20 22:26:51,784 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1503 transitions. [2022-09-20 22:26:51,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1503 transitions. [2022-09-20 22:26:51,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:26:51,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1503 transitions. [2022-09-20 22:26:51,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.61538461538461) internal successors, (1503), 13 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:51,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:51,798 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:51,798 INFO L175 Difference]: Start difference. First operand has 153 places, 122 transitions, 374 flow. Second operand 13 states and 1503 transitions. [2022-09-20 22:26:51,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 1710 flow [2022-09-20 22:26:51,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 283 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:26:51,845 INFO L231 Difference]: Finished difference. Result has 155 places, 130 transitions, 528 flow [2022-09-20 22:26:51,845 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=528, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2022-09-20 22:26:51,846 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-09-20 22:26:51,847 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 528 flow [2022-09-20 22:26:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:51,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:51,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:26:51,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash 161808891, now seen corresponding path program 1 times [2022-09-20 22:26:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:51,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405054606] [2022-09-20 22:26:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:51,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:51,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405054606] [2022-09-20 22:26:51,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405054606] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:51,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:51,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:26:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205526178] [2022-09-20 22:26:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:26:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:26:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:26:51,996 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:26:51,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 528 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:51,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:51,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:26:51,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:26:55,093 INFO L130 PetriNetUnfolder]: 14142/22995 cut-off events. [2022-09-20 22:26:55,093 INFO L131 PetriNetUnfolder]: For 92410/92410 co-relation queries the response was YES. [2022-09-20 22:26:55,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86773 conditions, 22995 events. 14142/22995 cut-off events. For 92410/92410 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 174303 event pairs, 2656 based on Foata normal form. 450/22876 useless extension candidates. Maximal degree in co-relation 86686. Up to 6590 conditions per place. [2022-09-20 22:26:55,298 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 58 selfloop transitions, 23 changer transitions 121/287 dead transitions. [2022-09-20 22:26:55,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 287 transitions, 2008 flow [2022-09-20 22:26:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:26:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:26:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2022-09-20 22:26:55,302 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489819004524887 [2022-09-20 22:26:55,302 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2022-09-20 22:26:55,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2022-09-20 22:26:55,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:26:55,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2022-09-20 22:26:55,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.46153846153847) internal successors, (1501), 13 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:55,308 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:55,308 INFO L175 Difference]: Start difference. First operand has 155 places, 130 transitions, 528 flow. Second operand 13 states and 1501 transitions. [2022-09-20 22:26:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 287 transitions, 2008 flow [2022-09-20 22:26:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 1960 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-09-20 22:26:55,552 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 796 flow [2022-09-20 22:26:55,552 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=796, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-09-20 22:26:55,553 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-09-20 22:26:55,553 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 796 flow [2022-09-20 22:26:55,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:55,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:55,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:26:55,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash -104517862, now seen corresponding path program 1 times [2022-09-20 22:26:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:55,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986031533] [2022-09-20 22:26:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:55,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:55,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986031533] [2022-09-20 22:26:55,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986031533] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:55,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:55,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:26:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460612359] [2022-09-20 22:26:55,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:26:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:26:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:26:55,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:26:55,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:55,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:55,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:26:55,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:26:58,746 INFO L130 PetriNetUnfolder]: 12532/21126 cut-off events. [2022-09-20 22:26:58,747 INFO L131 PetriNetUnfolder]: For 136525/136525 co-relation queries the response was YES. [2022-09-20 22:26:58,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90138 conditions, 21126 events. 12532/21126 cut-off events. For 136525/136525 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 169516 event pairs, 1156 based on Foata normal form. 384/21198 useless extension candidates. Maximal degree in co-relation 90033. Up to 5937 conditions per place. [2022-09-20 22:26:58,949 INFO L137 encePairwiseOnDemand]: 120/136 looper letters, 62 selfloop transitions, 33 changer transitions 121/301 dead transitions. [2022-09-20 22:26:58,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 301 transitions, 2628 flow [2022-09-20 22:26:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:26:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:26:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-09-20 22:26:58,952 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478506787330317 [2022-09-20 22:26:58,953 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-09-20 22:26:58,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-09-20 22:26:58,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:26:58,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-09-20 22:26:58,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:58,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:58,958 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:58,958 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 796 flow. Second operand 13 states and 1499 transitions. [2022-09-20 22:26:58,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 301 transitions, 2628 flow [2022-09-20 22:26:59,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 301 transitions, 2502 flow, removed 63 selfloop flow, removed 6 redundant places. [2022-09-20 22:26:59,359 INFO L231 Difference]: Finished difference. Result has 179 places, 157 transitions, 1100 flow [2022-09-20 22:26:59,359 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1100, PETRI_PLACES=179, PETRI_TRANSITIONS=157} [2022-09-20 22:26:59,360 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 36 predicate places. [2022-09-20 22:26:59,360 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 157 transitions, 1100 flow [2022-09-20 22:26:59,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:59,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:26:59,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:26:59,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:26:59,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:26:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:26:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash -904986769, now seen corresponding path program 1 times [2022-09-20 22:26:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:26:59,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018148351] [2022-09-20 22:26:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:26:59,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:26:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:26:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:26:59,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:26:59,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018148351] [2022-09-20 22:26:59,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018148351] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:26:59,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:26:59,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:26:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747717458] [2022-09-20 22:26:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:26:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:26:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:26:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:26:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:26:59,437 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:26:59,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 157 transitions, 1100 flow. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:26:59,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:26:59,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:26:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:27:03,557 INFO L130 PetriNetUnfolder]: 14474/24768 cut-off events. [2022-09-20 22:27:03,558 INFO L131 PetriNetUnfolder]: For 216482/216509 co-relation queries the response was YES. [2022-09-20 22:27:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112409 conditions, 24768 events. 14474/24768 cut-off events. For 216482/216509 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 204261 event pairs, 2530 based on Foata normal form. 384/24526 useless extension candidates. Maximal degree in co-relation 112290. Up to 6114 conditions per place. [2022-09-20 22:27:03,875 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 63 selfloop transitions, 42 changer transitions 111/301 dead transitions. [2022-09-20 22:27:03,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 301 transitions, 2862 flow [2022-09-20 22:27:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:27:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:27:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-09-20 22:27:03,879 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-09-20 22:27:03,879 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-09-20 22:27:03,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-09-20 22:27:03,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:27:03,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-09-20 22:27:03,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:03,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:03,887 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:03,887 INFO L175 Difference]: Start difference. First operand has 179 places, 157 transitions, 1100 flow. Second operand 13 states and 1490 transitions. [2022-09-20 22:27:03,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 301 transitions, 2862 flow [2022-09-20 22:27:04,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 301 transitions, 2770 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-09-20 22:27:04,700 INFO L231 Difference]: Finished difference. Result has 188 places, 162 transitions, 1368 flow [2022-09-20 22:27:04,700 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1368, PETRI_PLACES=188, PETRI_TRANSITIONS=162} [2022-09-20 22:27:04,701 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 45 predicate places. [2022-09-20 22:27:04,701 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 162 transitions, 1368 flow [2022-09-20 22:27:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:27:04,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:27:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:27:04,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:27:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:27:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -165742104, now seen corresponding path program 1 times [2022-09-20 22:27:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:27:04,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006768620] [2022-09-20 22:27:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:27:04,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:27:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:27:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:27:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:27:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006768620] [2022-09-20 22:27:04,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006768620] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:27:04,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:27:04,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:27:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939510671] [2022-09-20 22:27:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:27:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:27:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:27:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:27:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:27:04,778 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:27:04,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 162 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:04,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:27:04,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:27:04,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:27:08,904 INFO L130 PetriNetUnfolder]: 13427/22422 cut-off events. [2022-09-20 22:27:08,904 INFO L131 PetriNetUnfolder]: For 298416/298416 co-relation queries the response was YES. [2022-09-20 22:27:09,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116119 conditions, 22422 events. 13427/22422 cut-off events. For 298416/298416 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 177046 event pairs, 2112 based on Foata normal form. 516/22607 useless extension candidates. Maximal degree in co-relation 115988. Up to 4830 conditions per place. [2022-09-20 22:27:09,171 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 87 selfloop transitions, 25 changer transitions 140/337 dead transitions. [2022-09-20 22:27:09,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 337 transitions, 4260 flow [2022-09-20 22:27:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:27:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:27:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1484 transitions. [2022-09-20 22:27:09,174 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8393665158371041 [2022-09-20 22:27:09,174 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1484 transitions. [2022-09-20 22:27:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1484 transitions. [2022-09-20 22:27:09,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:27:09,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1484 transitions. [2022-09-20 22:27:09,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:09,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:09,180 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:09,180 INFO L175 Difference]: Start difference. First operand has 188 places, 162 transitions, 1368 flow. Second operand 13 states and 1484 transitions. [2022-09-20 22:27:09,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 337 transitions, 4260 flow [2022-09-20 22:27:09,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 337 transitions, 4152 flow, removed 54 selfloop flow, removed 10 redundant places. [2022-09-20 22:27:09,519 INFO L231 Difference]: Finished difference. Result has 193 places, 174 transitions, 1732 flow [2022-09-20 22:27:09,519 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1732, PETRI_PLACES=193, PETRI_TRANSITIONS=174} [2022-09-20 22:27:09,520 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 50 predicate places. [2022-09-20 22:27:09,520 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 174 transitions, 1732 flow [2022-09-20 22:27:09,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:09,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:27:09,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:27:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:27:09,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:27:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:27:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash 195461524, now seen corresponding path program 1 times [2022-09-20 22:27:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:27:09,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337759540] [2022-09-20 22:27:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:27:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:27:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:27:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:27:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:27:09,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337759540] [2022-09-20 22:27:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337759540] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:27:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:27:09,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:27:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323279952] [2022-09-20 22:27:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:27:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:27:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:27:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:27:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:27:09,581 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-09-20 22:27:09,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 174 transitions, 1732 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:09,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:27:09,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-09-20 22:27:09,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:27:18,956 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1109] L762-->L769: Formula: (let ((.cse0 (= (mod v_~a$w_buff0_used~0_493 256) 0)) (.cse2 (= (mod v_~a$r_buff1_thd1~0_50 256) 0)) (.cse13 (= (mod v_~a$w_buff1_used~0_350 256) 0)) (.cse12 (= (mod v_~a$r_buff0_thd1~0_75 256) 0)) (.cse14 (= (mod v_~a$w_buff0_used~0_494 256) 0))) (let ((.cse7 (not .cse14)) (.cse6 (or .cse12 .cse14)) (.cse9 (not .cse13)) (.cse5 (not .cse2)) (.cse11 (or .cse2 .cse13)) (.cse8 (not .cse12)) (.cse4 (not .cse0)) (.cse10 (or .cse12 .cse0))) (and (let ((.cse1 (= (mod v_~a$r_buff0_thd1~0_74 256) 0)) (.cse3 (= (mod v_~a$w_buff1_used~0_349 256) 0))) (or (and (or .cse0 .cse1) (= v_~a$r_buff1_thd1~0_50 v_~a$r_buff1_thd1~0_49) (or .cse2 .cse3)) (and (or (and (not .cse1) .cse4) (and (not .cse3) .cse5)) (= v_~a$r_buff1_thd1~0_49 0)))) (or (and .cse6 (= v_~a$w_buff0_used~0_494 v_~a$w_buff0_used~0_493)) (and .cse7 .cse8 (= v_~a$w_buff0_used~0_493 0))) (or (and (= v_~a$w_buff1_used~0_349 0) (or (and .cse9 .cse5) (and .cse8 .cse4))) (and (= v_~a$w_buff1_used~0_349 v_~a$w_buff1_used~0_350) .cse10 .cse11)) (or (and .cse7 .cse8 (= |v_P0_#t~ite3#1_47| |v_P0Thread1of1ForFork1_#t~ite3#1_1|) (= v_~a~0_180 v_~a$w_buff0~0_115)) (and .cse6 (or (and (= |v_P0_#t~ite3#1_47| v_~a$w_buff1~0_128) .cse9 .cse5) (and .cse11 (= v_~a~0_181 |v_P0_#t~ite3#1_47|))) (= v_~a~0_180 |v_P0_#t~ite3#1_47|))) (or (and .cse8 .cse4 (= v_~a$r_buff0_thd1~0_74 0)) (and (= v_~a$r_buff0_thd1~0_75 v_~a$r_buff0_thd1~0_74) .cse10))))) InVars {~a~0=v_~a~0_181, ~a$w_buff1~0=v_~a$w_buff1~0_128, ~a$w_buff0~0=v_~a$w_buff0~0_115, ~a$r_buff1_thd1~0=v_~a$r_buff1_thd1~0_50, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_494, ~a$r_buff0_thd1~0=v_~a$r_buff0_thd1~0_75, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_350, P0Thread1of1ForFork1_#t~ite3#1=|v_P0Thread1of1ForFork1_#t~ite3#1_1|} OutVars{~a$r_buff1_thd1~0=v_~a$r_buff1_thd1~0_49, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_493, P0Thread1of1ForFork1_#t~ite6#1=|v_P0Thread1of1ForFork1_#t~ite6#1_1|, ~a$r_buff0_thd1~0=v_~a$r_buff0_thd1~0_74, P0Thread1of1ForFork1_#t~ite4#1=|v_P0Thread1of1ForFork1_#t~ite4#1_1|, ~a~0=v_~a~0_180, P0Thread1of1ForFork1_#t~ite8#1=|v_P0Thread1of1ForFork1_#t~ite8#1_1|, ~a$w_buff1~0=v_~a$w_buff1~0_128, ~a$w_buff0~0=v_~a$w_buff0~0_115, P0Thread1of1ForFork1_#t~ite7#1=|v_P0Thread1of1ForFork1_#t~ite7#1_1|, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_349, P0Thread1of1ForFork1_#t~ite5#1=|v_P0Thread1of1ForFork1_#t~ite5#1_1|} AuxVars[|v_P0_#t~ite3#1_47|] AssignedVars[~a~0, P0Thread1of1ForFork1_#t~ite8#1, ~a$r_buff1_thd1~0, ~a$w_buff0_used~0, P0Thread1of1ForFork1_#t~ite6#1, ~a$r_buff0_thd1~0, P0Thread1of1ForFork1_#t~ite7#1, ~a$w_buff1_used~0, P0Thread1of1ForFork1_#t~ite5#1, P0Thread1of1ForFork1_#t~ite3#1, P0Thread1of1ForFork1_#t~ite4#1][214], [359#true, 218#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 118#L848true, P0Thread1of1ForFork1InUse, 81#L884-1true, P1Thread1of1ForFork3InUse, P3Thread1of1ForFork2InUse, P2Thread1of1ForFork0InUse, Black: 253#(= ~y~0 0), Black: 251#true, 39#L769true, Black: 259#(and (<= 1 ~main$tmp_guard1~0) (= ~y~0 0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 263#(and (<= 1 ~main$tmp_guard1~0) (= ~y~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 326#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 289#(= ~y~0 1), 16#L812true, Black: 154#true, Black: 161#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 165#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 157#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 169#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 182#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 163#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 167#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 299#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 291#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 303#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 301#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 309#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 290#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 307#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 287#true, Black: 179#true, Black: 181#(= ~z~0 0), Black: 191#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (= ~z~0 0)), Black: 187#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (= ~z~0 0)), Black: 197#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|)) (= ~z~0 0)), Black: 337#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 323#true, Black: 335#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 325#(= ~__unbuffered_p3_EAX~0 0), Black: 339#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 345#(and (<= 1 ~main$tmp_guard1~0) (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 343#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 327#(and (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 331#(and (<= 1 ~main$tmp_guard1~0) (= ~__unbuffered_p3_EAX~0 0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 341#(and (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (= ~__unbuffered_p3_EAX~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 333#(and (<= 1 ~main$tmp_guard1~0) (= ~__unbuffered_p3_EAX~0 0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 254#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 225#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), 34#L792true, Black: 233#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (or (<= 1 |ULTIMATE.start___VERIFIER_assert_~expression#1|) (<= (+ |ULTIMATE.start___VERIFIER_assert_~expression#1| 255) 0)) (<= (div ~main$tmp_guard1~0 256) 0) (or (<= (+ |ULTIMATE.start___VERIFIER_assert_#in~expression#1| 255) 0) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~expression#1|))), Black: 215#true, Black: 223#(and (= ~x~0 0) (<= 1 ~main$tmp_guard1~0) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 217#(= ~x~0 0)]) [2022-09-20 22:27:18,958 INFO L383 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-09-20 22:27:18,958 INFO L386 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-09-20 22:27:18,958 INFO L386 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-09-20 22:27:18,958 INFO L386 tUnfolder$Statistics]: existing Event has 100 ancestors and is cut-off event [2022-09-20 22:27:19,045 INFO L130 PetriNetUnfolder]: 31942/55980 cut-off events. [2022-09-20 22:27:19,045 INFO L131 PetriNetUnfolder]: For 277960/355235 co-relation queries the response was YES. [2022-09-20 22:27:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153705 conditions, 55980 events. 31942/55980 cut-off events. For 277960/355235 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 546203 event pairs, 3056 based on Foata normal form. 1236/54316 useless extension candidates. Maximal degree in co-relation 153574. Up to 17627 conditions per place. [2022-09-20 22:27:19,933 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 117 selfloop transitions, 20 changer transitions 0/284 dead transitions. [2022-09-20 22:27:19,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 284 transitions, 2904 flow [2022-09-20 22:27:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:27:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:27:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-09-20 22:27:19,936 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-09-20 22:27:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-09-20 22:27:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-09-20 22:27:19,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:27:19,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-09-20 22:27:19,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:19,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:19,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:19,940 INFO L175 Difference]: Start difference. First operand has 193 places, 174 transitions, 1732 flow. Second operand 10 states and 1197 transitions. [2022-09-20 22:27:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 284 transitions, 2904 flow [2022-09-20 22:27:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 284 transitions, 2860 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-09-20 22:27:20,216 INFO L231 Difference]: Finished difference. Result has 192 places, 192 transitions, 1831 flow [2022-09-20 22:27:20,217 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1831, PETRI_PLACES=192, PETRI_TRANSITIONS=192} [2022-09-20 22:27:20,217 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 49 predicate places. [2022-09-20 22:27:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 192 transitions, 1831 flow [2022-09-20 22:27:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:20,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:27:20,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:27:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:27:20,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:27:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:27:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -711753452, now seen corresponding path program 1 times [2022-09-20 22:27:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:27:20,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607437832] [2022-09-20 22:27:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:27:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:27:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:27:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:27:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:27:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607437832] [2022-09-20 22:27:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607437832] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:27:20,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:27:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:27:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367732709] [2022-09-20 22:27:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:27:20,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:27:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:27:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:27:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:27:20,302 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 136 [2022-09-20 22:27:20,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 192 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:20,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:27:20,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 136 [2022-09-20 22:27:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:27:26,707 INFO L130 PetriNetUnfolder]: 13813/35445 cut-off events. [2022-09-20 22:27:26,707 INFO L131 PetriNetUnfolder]: For 234425/240412 co-relation queries the response was YES. [2022-09-20 22:27:27,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131846 conditions, 35445 events. 13813/35445 cut-off events. For 234425/240412 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 448631 event pairs, 3299 based on Foata normal form. 751/33622 useless extension candidates. Maximal degree in co-relation 131709. Up to 6457 conditions per place. [2022-09-20 22:27:27,378 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 152 selfloop transitions, 81 changer transitions 3/339 dead transitions. [2022-09-20 22:27:27,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 339 transitions, 4216 flow [2022-09-20 22:27:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:27:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:27:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-09-20 22:27:27,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8331447963800905 [2022-09-20 22:27:27,381 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-09-20 22:27:27,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-09-20 22:27:27,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:27:27,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-09-20 22:27:27,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.3076923076923) internal successors, (1473), 13 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:27,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:27,386 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:27,386 INFO L175 Difference]: Start difference. First operand has 192 places, 192 transitions, 1831 flow. Second operand 13 states and 1473 transitions. [2022-09-20 22:27:27,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 339 transitions, 4216 flow [2022-09-20 22:27:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 339 transitions, 4120 flow, removed 47 selfloop flow, removed 9 redundant places. [2022-09-20 22:27:27,973 INFO L231 Difference]: Finished difference. Result has 207 places, 236 transitions, 3147 flow [2022-09-20 22:27:27,973 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3147, PETRI_PLACES=207, PETRI_TRANSITIONS=236} [2022-09-20 22:27:27,974 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 64 predicate places. [2022-09-20 22:27:27,974 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 236 transitions, 3147 flow [2022-09-20 22:27:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:27,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:27:27,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:27:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:27:27,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:27:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:27:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 908472614, now seen corresponding path program 1 times [2022-09-20 22:27:27,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:27:27,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493966573] [2022-09-20 22:27:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:27:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:27:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:27:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:27:28,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:27:28,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493966573] [2022-09-20 22:27:28,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493966573] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:27:28,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:27:28,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:27:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393755972] [2022-09-20 22:27:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:27:28,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:27:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:27:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:27:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:27:28,068 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-09-20 22:27:28,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 236 transitions, 3147 flow. Second operand has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:27:28,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:27:28,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-09-20 22:27:28,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand