/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/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:22:10,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:22:10,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:22:10,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:22:10,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:22:10,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:22:10,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:22:10,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:22:10,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:22:10,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:22:10,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:22:10,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:22:10,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:22:10,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:22:10,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:22:10,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:22:10,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:22:10,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:22:10,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:22:10,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:22:10,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:22:10,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:22:10,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:22:10,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:22:10,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:22:10,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:22:10,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:22:10,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:22:10,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:22:10,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:22:10,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:22:10,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:22:10,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:22:10,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:22:10,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:22:10,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:22:10,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:22:10,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:22:10,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:22:10,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:22:10,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:22:10,234 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 23:22:10,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:22:10,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:22:10,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:22:10,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:22:10,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:22:10,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:22:10,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:22:10,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:22:10,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:22:10,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:22:10,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:22:10,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:22:10,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:22:10,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:22:10,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:22:10,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:22:10,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:22:10,285 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:22:10,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:22:10,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:22:10,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:22:10,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:22:10,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:22:10,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:22:10,514 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:22:10,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-09-20 23:22:10,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d765498ee/df535055a42d4224960778afb1250be2/FLAGf5ddd6b7e [2022-09-20 23:22:10,930 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:22:10,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-09-20 23:22:10,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d765498ee/df535055a42d4224960778afb1250be2/FLAGf5ddd6b7e [2022-09-20 23:22:10,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d765498ee/df535055a42d4224960778afb1250be2 [2022-09-20 23:22:10,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:22:10,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:22:10,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:22:10,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:22:10,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:22:10,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:22:10" (1/1) ... [2022-09-20 23:22:10,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467ff8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:10, skipping insertion in model container [2022-09-20 23:22:10,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:22:10" (1/1) ... [2022-09-20 23:22:10,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:22:11,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:22:11,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-09-20 23:22:11,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:22:11,231 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:22:11,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-09-20 23:22:11,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:22:11,263 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:22:11,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11 WrapperNode [2022-09-20 23:22:11,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:22:11,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:22:11,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:22:11,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:22:11,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,315 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-09-20 23:22:11,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:22:11,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:22:11,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:22:11,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:22:11,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:22:11,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:22:11,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:22:11,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:22:11,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (1/1) ... [2022-09-20 23:22:11,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:22:11,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:22:11,388 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 23:22:11,401 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 23:22:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:22:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:22:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:22:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:22:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:22:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:22:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:22:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:22:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:22:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:22:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:22:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:22:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:22:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:22:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:22:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:22:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:22:11,438 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 23:22:11,505 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:22:11,506 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:22:11,725 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:22:11,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:22:11,807 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-20 23:22:11,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:22:11 BoogieIcfgContainer [2022-09-20 23:22:11,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:22:11,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:22:11,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:22:11,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:22:11,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:22:10" (1/3) ... [2022-09-20 23:22:11,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cce42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:22:11, skipping insertion in model container [2022-09-20 23:22:11,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:22:11" (2/3) ... [2022-09-20 23:22:11,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cce42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:22:11, skipping insertion in model container [2022-09-20 23:22:11,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:22:11" (3/3) ... [2022-09-20 23:22:11,818 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-09-20 23:22:11,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:22:11,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:22:11,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:22:11,913 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 23:22:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-09-20 23:22:12,058 INFO L130 PetriNetUnfolder]: 10/146 cut-off events. [2022-09-20 23:22:12,058 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:22:12,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-09-20 23:22:12,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2022-09-20 23:22:12,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2022-09-20 23:22:12,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:22:12,094 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;@564c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:22:12,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 23:22:12,144 INFO L130 PetriNetUnfolder]: 10/134 cut-off events. [2022-09-20 23:22:12,145 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:22:12,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:12,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:22:12,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1625555615, now seen corresponding path program 1 times [2022-09-20 23:22:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140373982] [2022-09-20 23:22:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:12,639 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 23:22:12,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:12,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140373982] [2022-09-20 23:22:12,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140373982] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:22:12,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:22:12,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:22:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796303832] [2022-09-20 23:22:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:22:12,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:22:12,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:22:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:22:12,682 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2022-09-20 23:22:12,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 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 23:22:12,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:12,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2022-09-20 23:22:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:12,870 INFO L130 PetriNetUnfolder]: 156/397 cut-off events. [2022-09-20 23:22:12,871 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-09-20 23:22:12,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 397 events. 156/397 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1520 event pairs, 61 based on Foata normal form. 5/327 useless extension candidates. Maximal degree in co-relation 621. Up to 160 conditions per place. [2022-09-20 23:22:12,876 INFO L137 encePairwiseOnDemand]: 134/149 looper letters, 38 selfloop transitions, 5 changer transitions 4/137 dead transitions. [2022-09-20 23:22:12,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 392 flow [2022-09-20 23:22:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:22:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:22:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 778 transitions. [2022-09-20 23:22:12,897 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7459252157238735 [2022-09-20 23:22:12,898 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 778 transitions. [2022-09-20 23:22:12,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 778 transitions. [2022-09-20 23:22:12,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:12,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 778 transitions. [2022-09-20 23:22:12,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:22:12,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 23:22:12,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 23:22:12,952 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 7 states and 778 transitions. [2022-09-20 23:22:12,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 392 flow [2022-09-20 23:22:12,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 376 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 23:22:12,987 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 272 flow [2022-09-20 23:22:12,989 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2022-09-20 23:22:12,992 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 1 predicate places. [2022-09-20 23:22:12,993 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 272 flow [2022-09-20 23:22:12,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 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 23:22:12,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:12,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:22:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:22:12,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1551362859, now seen corresponding path program 1 times [2022-09-20 23:22:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:12,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206524150] [2022-09-20 23:22:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:22:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:13,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206524150] [2022-09-20 23:22:13,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206524150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:22:13,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:22:13,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:22:13,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646621228] [2022-09-20 23:22:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:22:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:22:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:13,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:22:13,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:22:13,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-09-20 23:22:13,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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 23:22:13,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:13,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-09-20 23:22:13,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:13,418 INFO L130 PetriNetUnfolder]: 182/527 cut-off events. [2022-09-20 23:22:13,419 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-09-20 23:22:13,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 527 events. 182/527 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2221 event pairs, 111 based on Foata normal form. 9/452 useless extension candidates. Maximal degree in co-relation 304. Up to 261 conditions per place. [2022-09-20 23:22:13,426 INFO L137 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 15/144 dead transitions. [2022-09-20 23:22:13,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 421 flow [2022-09-20 23:22:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:22:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:22:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2022-09-20 23:22:13,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7869127516778524 [2022-09-20 23:22:13,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 938 transitions. [2022-09-20 23:22:13,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 938 transitions. [2022-09-20 23:22:13,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:13,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 938 transitions. [2022-09-20 23:22:13,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 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 23:22:13,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 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 23:22:13,437 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 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 23:22:13,437 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 272 flow. Second operand 8 states and 938 transitions. [2022-09-20 23:22:13,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 421 flow [2022-09-20 23:22:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 144 transitions, 410 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:22:13,442 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 288 flow [2022-09-20 23:22:13,443 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-09-20 23:22:13,443 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 2 predicate places. [2022-09-20 23:22:13,444 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 288 flow [2022-09-20 23:22:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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 23:22:13,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:13,445 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, 1, 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 23:22:13,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:22:13,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash 887233019, now seen corresponding path program 1 times [2022-09-20 23:22:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:13,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176978414] [2022-09-20 23:22:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:22:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176978414] [2022-09-20 23:22:13,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176978414] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:13,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124978029] [2022-09-20 23:22:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:13,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:13,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:22:13,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:22:13,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:22:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:13,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:22:13,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:22:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:22:13,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:22:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:22:14,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124978029] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:14,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:22:14,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 23:22:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027994857] [2022-09-20 23:22:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:22:14,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:22:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:22:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 23:22:14,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-09-20 23:22:14,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 23:22:14,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:14,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-09-20 23:22:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:14,276 INFO L130 PetriNetUnfolder]: 139/492 cut-off events. [2022-09-20 23:22:14,276 INFO L131 PetriNetUnfolder]: For 62/74 co-relation queries the response was YES. [2022-09-20 23:22:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 492 events. 139/492 cut-off events. For 62/74 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2242 event pairs, 87 based on Foata normal form. 12/475 useless extension candidates. Maximal degree in co-relation 799. Up to 133 conditions per place. [2022-09-20 23:22:14,281 INFO L137 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2022-09-20 23:22:14,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 384 flow [2022-09-20 23:22:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:22:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:22:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2022-09-20 23:22:14,283 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2022-09-20 23:22:14,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2022-09-20 23:22:14,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2022-09-20 23:22:14,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:14,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2022-09-20 23:22:14,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 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 23:22:14,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 23:22:14,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 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 23:22:14,289 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2022-09-20 23:22:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 384 flow [2022-09-20 23:22:14,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-09-20 23:22:14,294 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 307 flow [2022-09-20 23:22:14,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2022-09-20 23:22:14,295 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-09-20 23:22:14,295 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 307 flow [2022-09-20 23:22:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 23:22:14,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:14,296 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, 1, 1, 1, 1, 1, 1, 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 23:22:14,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 23:22:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:14,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1649285213, now seen corresponding path program 1 times [2022-09-20 23:22:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:14,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971205518] [2022-09-20 23:22:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:22:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:15,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971205518] [2022-09-20 23:22:15,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971205518] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:15,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809435470] [2022-09-20 23:22:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:15,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:22:15,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:22:15,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:22:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:15,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 50 conjunts are in the unsatisfiable core [2022-09-20 23:22:15,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:22:15,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:22:15,337 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 23:22:15,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-20 23:22:15,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-20 23:22:15,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:22:15,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:15,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:22:15,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:16,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:16,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-20 23:22:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:22:16,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:22:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:22:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809435470] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:22:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18, 25] total 43 [2022-09-20 23:22:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426330957] [2022-09-20 23:22:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:22:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 23:22:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 23:22:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1620, Unknown=1, NotChecked=0, Total=1806 [2022-09-20 23:22:17,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-09-20 23:22:17,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 307 flow. Second operand has 10 states, 10 states have (on average 85.5) internal successors, (855), 10 states have internal predecessors, (855), 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 23:22:17,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:17,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-09-20 23:22:17,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:18,029 INFO L130 PetriNetUnfolder]: 2404/4691 cut-off events. [2022-09-20 23:22:18,030 INFO L131 PetriNetUnfolder]: For 1970/1970 co-relation queries the response was YES. [2022-09-20 23:22:18,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10407 conditions, 4691 events. 2404/4691 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 33845 event pairs, 432 based on Foata normal form. 1/4621 useless extension candidates. Maximal degree in co-relation 10323. Up to 1817 conditions per place. [2022-09-20 23:22:18,059 INFO L137 encePairwiseOnDemand]: 134/149 looper letters, 129 selfloop transitions, 37 changer transitions 9/246 dead transitions. [2022-09-20 23:22:18,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 246 transitions, 1005 flow [2022-09-20 23:22:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:22:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:22:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1048 transitions. [2022-09-20 23:22:18,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6394142769981697 [2022-09-20 23:22:18,063 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1048 transitions. [2022-09-20 23:22:18,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1048 transitions. [2022-09-20 23:22:18,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:18,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1048 transitions. [2022-09-20 23:22:18,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.27272727272727) internal successors, (1048), 11 states have internal predecessors, (1048), 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 23:22:18,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 149.0) internal successors, (1788), 12 states have internal predecessors, (1788), 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 23:22:18,069 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 149.0) internal successors, (1788), 12 states have internal predecessors, (1788), 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 23:22:18,069 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 307 flow. Second operand 11 states and 1048 transitions. [2022-09-20 23:22:18,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 246 transitions, 1005 flow [2022-09-20 23:22:18,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 246 transitions, 987 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:22:18,076 INFO L231 Difference]: Finished difference. Result has 151 places, 168 transitions, 565 flow [2022-09-20 23:22:18,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=565, PETRI_PLACES=151, PETRI_TRANSITIONS=168} [2022-09-20 23:22:18,077 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 16 predicate places. [2022-09-20 23:22:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 168 transitions, 565 flow [2022-09-20 23:22:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.5) internal successors, (855), 10 states have internal predecessors, (855), 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 23:22:18,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:18,078 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, 1, 1, 1, 1, 1, 1, 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 23:22:18,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 23:22:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-09-20 23:22:18,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -867192591, now seen corresponding path program 2 times [2022-09-20 23:22:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:18,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005914688] [2022-09-20 23:22:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:18,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:18,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005914688] [2022-09-20 23:22:18,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005914688] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:18,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159134264] [2022-09-20 23:22:18,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:22:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:22:18,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:22:18,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 23:22:18,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:22:18,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:22:18,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-20 23:22:18,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:22:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:22:19,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:19,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:22:19,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:22:19,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-09-20 23:22:19,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-20 23:22:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:19,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:22:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:20,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159134264] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:20,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:22:20,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11, 22] total 37 [2022-09-20 23:22:20,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728529377] [2022-09-20 23:22:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:22:20,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 23:22:20,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 23:22:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1151, Unknown=18, NotChecked=0, Total=1332 [2022-09-20 23:22:20,542 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 149 [2022-09-20 23:22:20,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 168 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 80.85714285714286) internal successors, (1132), 14 states have internal predecessors, (1132), 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 23:22:20,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:20,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 149 [2022-09-20 23:22:20,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:21,267 INFO L130 PetriNetUnfolder]: 1704/4072 cut-off events. [2022-09-20 23:22:21,268 INFO L131 PetriNetUnfolder]: For 3439/3692 co-relation queries the response was YES. [2022-09-20 23:22:21,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10595 conditions, 4072 events. 1704/4072 cut-off events. For 3439/3692 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 33300 event pairs, 485 based on Foata normal form. 46/3960 useless extension candidates. Maximal degree in co-relation 10565. Up to 1636 conditions per place. [2022-09-20 23:22:21,309 INFO L137 encePairwiseOnDemand]: 135/149 looper letters, 129 selfloop transitions, 43 changer transitions 7/260 dead transitions. [2022-09-20 23:22:21,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 260 transitions, 1330 flow [2022-09-20 23:22:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 23:22:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 23:22:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1262 transitions. [2022-09-20 23:22:21,313 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5646532438478747 [2022-09-20 23:22:21,313 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1262 transitions. [2022-09-20 23:22:21,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1262 transitions. [2022-09-20 23:22:21,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:21,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1262 transitions. [2022-09-20 23:22:21,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 84.13333333333334) internal successors, (1262), 15 states have internal predecessors, (1262), 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 23:22:21,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 149.0) internal successors, (2384), 16 states have internal predecessors, (2384), 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 23:22:21,322 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 149.0) internal successors, (2384), 16 states have internal predecessors, (2384), 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 23:22:21,322 INFO L175 Difference]: Start difference. First operand has 151 places, 168 transitions, 565 flow. Second operand 15 states and 1262 transitions. [2022-09-20 23:22:21,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 260 transitions, 1330 flow [2022-09-20 23:22:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 260 transitions, 1320 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-09-20 23:22:21,341 INFO L231 Difference]: Finished difference. Result has 168 places, 207 transitions, 921 flow [2022-09-20 23:22:21,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=921, PETRI_PLACES=168, PETRI_TRANSITIONS=207} [2022-09-20 23:22:21,342 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-09-20 23:22:21,343 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 207 transitions, 921 flow [2022-09-20 23:22:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.85714285714286) internal successors, (1132), 14 states have internal predecessors, (1132), 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 23:22:21,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:22:21,343 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, 1, 1, 1, 1, 1, 1, 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 23:22:21,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 23:22:21,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:21,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:22:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:22:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -275179179, now seen corresponding path program 3 times [2022-09-20 23:22:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:22:21,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657326055] [2022-09-20 23:22:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:22:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:22:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:22:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:22:21,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657326055] [2022-09-20 23:22:21,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657326055] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:22:21,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090654232] [2022-09-20 23:22:21,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 23:22:21,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:21,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:22:21,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:22:21,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 23:22:21,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-20 23:22:21,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:22:21,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-20 23:22:21,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:22:21,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-20 23:22:21,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2022-09-20 23:22:21,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2022-09-20 23:22:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:22,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:22:22,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2022-09-20 23:22:22,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2022-09-20 23:22:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:22:22,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090654232] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:22:22,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:22:22,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-09-20 23:22:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452552330] [2022-09-20 23:22:22,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:22:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 23:22:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:22:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 23:22:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-09-20 23:22:22,155 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 149 [2022-09-20 23:22:22,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 207 transitions, 921 flow. Second operand has 15 states, 15 states have (on average 95.6) internal successors, (1434), 15 states have internal predecessors, (1434), 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 23:22:22,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:22:22,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 149 [2022-09-20 23:22:22,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:22:22,583 INFO L130 PetriNetUnfolder]: 625/1850 cut-off events. [2022-09-20 23:22:22,584 INFO L131 PetriNetUnfolder]: For 2511/3033 co-relation queries the response was YES. [2022-09-20 23:22:22,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 1850 events. 625/1850 cut-off events. For 2511/3033 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13447 event pairs, 50 based on Foata normal form. 80/1898 useless extension candidates. Maximal degree in co-relation 5148. Up to 472 conditions per place. [2022-09-20 23:22:22,600 INFO L137 encePairwiseOnDemand]: 136/149 looper letters, 0 selfloop transitions, 0 changer transitions 245/245 dead transitions. [2022-09-20 23:22:22,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 245 transitions, 1472 flow [2022-09-20 23:22:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:22:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:22:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1338 transitions. [2022-09-20 23:22:22,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6414189837008629 [2022-09-20 23:22:22,604 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1338 transitions. [2022-09-20 23:22:22,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1338 transitions. [2022-09-20 23:22:22,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:22:22,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1338 transitions. [2022-09-20 23:22:22,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.57142857142857) internal successors, (1338), 14 states have internal predecessors, (1338), 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 23:22:22,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 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 23:22:22,612 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 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 23:22:22,612 INFO L175 Difference]: Start difference. First operand has 168 places, 207 transitions, 921 flow. Second operand 14 states and 1338 transitions. [2022-09-20 23:22:22,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 245 transitions, 1472 flow [2022-09-20 23:22:22,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 245 transitions, 1460 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-20 23:22:22,623 INFO L231 Difference]: Finished difference. Result has 171 places, 0 transitions, 0 flow [2022-09-20 23:22:22,623 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=171, PETRI_TRANSITIONS=0} [2022-09-20 23:22:22,624 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 36 predicate places. [2022-09-20 23:22:22,624 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 0 transitions, 0 flow [2022-09-20 23:22:22,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 95.6) internal successors, (1434), 15 states have internal predecessors, (1434), 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 23:22:22,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 23:22:22,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 23:22:22,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 23:22:22,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 23:22:22,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 23:22:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:22:22,844 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-09-20 23:22:22,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 23:22:22,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 23:22:22,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 11:22:22 BasicIcfg [2022-09-20 23:22:22,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 23:22:22,850 INFO L158 Benchmark]: Toolchain (without parser) took 11891.75ms. Allocated memory was 188.7MB in the beginning and 435.2MB in the end (delta: 246.4MB). Free memory was 124.2MB in the beginning and 196.5MB in the end (delta: -72.3MB). Peak memory consumption was 174.8MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,850 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 188.7MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 23:22:22,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.85ms. Allocated memory was 188.7MB in the beginning and 263.2MB in the end (delta: 74.4MB). Free memory was 124.1MB in the beginning and 230.6MB in the end (delta: -106.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.05ms. Allocated memory is still 263.2MB. Free memory was 230.6MB in the beginning and 229.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,851 INFO L158 Benchmark]: Boogie Preprocessor took 43.51ms. Allocated memory is still 263.2MB. Free memory was 229.0MB in the beginning and 227.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,852 INFO L158 Benchmark]: RCFGBuilder took 449.06ms. Allocated memory is still 263.2MB. Free memory was 227.4MB in the beginning and 209.5MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,852 INFO L158 Benchmark]: TraceAbstraction took 11037.23ms. Allocated memory was 263.2MB in the beginning and 435.2MB in the end (delta: 172.0MB). Free memory was 209.1MB in the beginning and 196.5MB in the end (delta: 12.5MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. [2022-09-20 23:22:22,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 188.7MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.85ms. Allocated memory was 188.7MB in the beginning and 263.2MB in the end (delta: 74.4MB). Free memory was 124.1MB in the beginning and 230.6MB in the end (delta: -106.5MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.05ms. Allocated memory is still 263.2MB. Free memory was 230.6MB in the beginning and 229.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.51ms. Allocated memory is still 263.2MB. Free memory was 229.0MB in the beginning and 227.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.06ms. Allocated memory is still 263.2MB. Free memory was 227.4MB in the beginning and 209.5MB in the end (delta: 17.9MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 11037.23ms. Allocated memory was 263.2MB in the beginning and 435.2MB in the end (delta: 172.0MB). Free memory was 209.1MB in the beginning and 196.5MB in the end (delta: 12.5MB). Peak memory consumption was 186.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 432 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 432 mSDsluCounter, 1206 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 288 IncrementalHoareTripleChecker+Unchecked, 1269 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 887 IncrementalHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 208 mSDtfsCounter, 887 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1066 GetRequests, 926 SyntacticMatches, 6 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=921occurred in iteration=5, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1201 NumberOfCodeBlocks, 1201 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1678 ConstructedInterpolants, 26 QuantifiedInterpolants, 10047 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1145 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 22/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 23:22:22,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...