/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:28:43,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:28:43,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:28:43,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:28:43,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:28:43,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:28:43,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:28:43,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:28:43,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:28:43,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:28:43,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:28:43,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:28:43,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:28:43,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:28:43,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:28:43,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:28:43,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:28:43,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:28:43,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:28:43,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:28:43,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:28:43,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:28:43,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:28:43,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:28:43,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:28:43,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:28:43,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:28:43,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:28:43,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:28:43,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:28:43,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:28:43,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:28:43,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:28:43,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:28:43,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:28:43,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:28:43,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:28:43,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:28:43,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:28:43,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:28:43,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:28:43,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:28:43,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:28:43,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:28:43,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:28:43,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:28:43,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:28:43,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:28:43,304 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:28:43,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:28:43,304 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:28:43,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:28:43,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:28:43,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:28:43,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:28:43,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:28:43,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:28:43,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:28:43,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:28:43,307 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:28:43,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:28:43,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:28:43,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:28:43,508 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:28:43,509 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:28:43,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-01-28 09:28:44,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:28:44,797 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:28:44,798 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-01-28 09:28:44,807 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b487efa4/d5681eed4ffd4617a97196f059377cfc/FLAGa2d5c53c8 [2023-01-28 09:28:44,822 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b487efa4/d5681eed4ffd4617a97196f059377cfc [2023-01-28 09:28:44,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:28:44,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:28:44,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:28:44,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:28:44,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:28:44,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:28:44" (1/1) ... [2023-01-28 09:28:44,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32049332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:44, skipping insertion in model container [2023-01-28 09:28:44,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:28:44" (1/1) ... [2023-01-28 09:28:44,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:28:44,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:28:45,072 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-01-28 09:28:45,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:28:45,105 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:28:45,145 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-01-28 09:28:45,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:28:45,162 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:28:45,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45 WrapperNode [2023-01-28 09:28:45,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:28:45,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:28:45,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:28:45,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:28:45,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,197 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2023-01-28 09:28:45,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:28:45,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:28:45,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:28:45,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:28:45,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:28:45,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:28:45,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:28:45,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:28:45,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (1/1) ... [2023-01-28 09:28:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:28:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:28:45,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:28:45,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:28:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:28:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:28:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:28:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:28:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:28:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:28:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:28:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:28:45,320 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:28:45,447 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:28:45,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:28:45,754 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:28:45,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:28:45,761 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 09:28:45,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:28:45 BoogieIcfgContainer [2023-01-28 09:28:45,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:28:45,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:28:45,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:28:45,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:28:45,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:28:44" (1/3) ... [2023-01-28 09:28:45,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44677080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:28:45, skipping insertion in model container [2023-01-28 09:28:45,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:28:45" (2/3) ... [2023-01-28 09:28:45,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44677080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:28:45, skipping insertion in model container [2023-01-28 09:28:45,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:28:45" (3/3) ... [2023-01-28 09:28:45,774 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-01-28 09:28:45,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:28:45,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:28:45,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:28:45,881 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:28:45,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 257 transitions, 530 flow [2023-01-28 09:28:46,007 INFO L130 PetriNetUnfolder]: 26/255 cut-off events. [2023-01-28 09:28:46,008 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:28:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 255 events. 26/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-01-28 09:28:46,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 257 transitions, 530 flow [2023-01-28 09:28:46,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 247 transitions, 506 flow [2023-01-28 09:28:46,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:28:46,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 247 transitions, 506 flow [2023-01-28 09:28:46,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 247 transitions, 506 flow [2023-01-28 09:28:46,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 247 transitions, 506 flow [2023-01-28 09:28:46,131 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-01-28 09:28:46,131 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:28:46,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 26/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-01-28 09:28:46,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-01-28 09:29:01,543 INFO L134 LiptonReduction]: Checked pairs total: 1519 [2023-01-28 09:29:01,544 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-01-28 09:29:01,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:29:01,560 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;@3373154, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:29:01,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:29:01,563 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-01-28 09:29:01,564 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:29:01,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:01,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:29:01,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:01,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2101152341, now seen corresponding path program 1 times [2023-01-28 09:29:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:01,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083315006] [2023-01-28 09:29:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:01,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:01,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:01,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663253864] [2023-01-28 09:29:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:01,642 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) [2023-01-28 09:29:01,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:29:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:01,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 09:29:01,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:29:01,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:29:01,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:01,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083315006] [2023-01-28 09:29:01,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:01,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663253864] [2023-01-28 09:29:01,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663253864] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:29:01,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:29:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:29:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709368155] [2023-01-28 09:29:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:01,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:29:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:29:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:29:01,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-01-28 09:29:01,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:01,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:01,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-01-28 09:29:01,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:01,931 INFO L130 PetriNetUnfolder]: 205/348 cut-off events. [2023-01-28 09:29:01,931 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-01-28 09:29:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 348 events. 205/348 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1363 event pairs, 100 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 278. Up to 166 conditions per place. [2023-01-28 09:29:01,933 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 26 selfloop transitions, 2 changer transitions 16/47 dead transitions. [2023-01-28 09:29:01,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 206 flow [2023-01-28 09:29:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:29:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:29:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 909 transitions. [2023-01-28 09:29:01,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263602251407129 [2023-01-28 09:29:01,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 909 transitions. [2023-01-28 09:29:01,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 909 transitions. [2023-01-28 09:29:01,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:01,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 909 transitions. [2023-01-28 09:29:01,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:01,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:01,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:01,958 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 909 transitions. [2023-01-28 09:29:01,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 206 flow [2023-01-28 09:29:01,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:29:01,961 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-01-28 09:29:01,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 09:29:01,964 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-01-28 09:29:01,965 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-01-28 09:29:01,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:01,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:01,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:29:01,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:29:02,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-01-28 09:29:02,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:02,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1311819515, now seen corresponding path program 1 times [2023-01-28 09:29:02,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:02,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718012668] [2023-01-28 09:29:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:02,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261157775] [2023-01-28 09:29:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:02,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:02,187 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) [2023-01-28 09:29:02,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:29:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:02,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 09:29:02,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:29:02,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:29:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:29:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718012668] [2023-01-28 09:29:02,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261157775] [2023-01-28 09:29:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261157775] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:29:02,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:29:02,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-01-28 09:29:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279614723] [2023-01-28 09:29:02,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 09:29:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:29:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:29:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:29:02,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-01-28 09:29:02,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:02,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-01-28 09:29:02,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:02,456 INFO L130 PetriNetUnfolder]: 194/311 cut-off events. [2023-01-28 09:29:02,456 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 09:29:02,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 311 events. 194/311 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1013 event pairs, 32 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 629. Up to 114 conditions per place. [2023-01-28 09:29:02,458 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 40 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-01-28 09:29:02,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 204 flow [2023-01-28 09:29:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:29:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:29:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1312 transitions. [2023-01-28 09:29:02,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-01-28 09:29:02,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1312 transitions. [2023-01-28 09:29:02,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1312 transitions. [2023-01-28 09:29:02,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:02,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1312 transitions. [2023-01-28 09:29:02,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,469 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 6 states and 1312 transitions. [2023-01-28 09:29:02,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 204 flow [2023-01-28 09:29:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:29:02,470 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 103 flow [2023-01-28 09:29:02,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-01-28 09:29:02,471 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-01-28 09:29:02,471 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 103 flow [2023-01-28 09:29:02,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:02,472 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] [2023-01-28 09:29:02,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:29:02,676 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,SelfDestructingSolverStorable1 [2023-01-28 09:29:02,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:02,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1014923716, now seen corresponding path program 1 times [2023-01-28 09:29:02,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:02,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726579909] [2023-01-28 09:29:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:02,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503330085] [2023-01-28 09:29:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:02,692 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) [2023-01-28 09:29:02,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:29:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:02,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:29:02,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:29:02,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:29:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:02,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726579909] [2023-01-28 09:29:02,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503330085] [2023-01-28 09:29:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503330085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:29:02,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:29:02,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:29:02,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159349423] [2023-01-28 09:29:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:29:02,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:29:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:29:02,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 533 [2023-01-28 09:29:02,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:02,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 533 [2023-01-28 09:29:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:02,932 INFO L130 PetriNetUnfolder]: 528/850 cut-off events. [2023-01-28 09:29:02,932 INFO L131 PetriNetUnfolder]: For 135/171 co-relation queries the response was YES. [2023-01-28 09:29:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 850 events. 528/850 cut-off events. For 135/171 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3736 event pairs, 312 based on Foata normal form. 38/766 useless extension candidates. Maximal degree in co-relation 1272. Up to 285 conditions per place. [2023-01-28 09:29:02,935 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 28 selfloop transitions, 3 changer transitions 46/79 dead transitions. [2023-01-28 09:29:02,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 79 transitions, 403 flow [2023-01-28 09:29:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:29:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:29:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1015 transitions. [2023-01-28 09:29:02,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808630393996248 [2023-01-28 09:29:02,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1015 transitions. [2023-01-28 09:29:02,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1015 transitions. [2023-01-28 09:29:02,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:02,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1015 transitions. [2023-01-28 09:29:02,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,944 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,944 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 103 flow. Second operand 5 states and 1015 transitions. [2023-01-28 09:29:02,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 79 transitions, 403 flow [2023-01-28 09:29:02,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:29:02,947 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 125 flow [2023-01-28 09:29:02,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-01-28 09:29:02,947 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-01-28 09:29:02,947 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 125 flow [2023-01-28 09:29:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:02,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:02,948 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] [2023-01-28 09:29:02,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:29:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:03,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:03,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1495140604, now seen corresponding path program 1 times [2023-01-28 09:29:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:03,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528833967] [2023-01-28 09:29:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:03,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:03,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955152763] [2023-01-28 09:29:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:03,165 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) [2023-01-28 09:29:03,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:29:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:03,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 09:29:03,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:29:03,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:29:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:29:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528833967] [2023-01-28 09:29:03,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955152763] [2023-01-28 09:29:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955152763] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:29:03,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:29:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-01-28 09:29:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314048233] [2023-01-28 09:29:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:03,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:29:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:29:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:29:03,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 533 [2023-01-28 09:29:03,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:03,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:03,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 533 [2023-01-28 09:29:03,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:03,581 INFO L130 PetriNetUnfolder]: 212/348 cut-off events. [2023-01-28 09:29:03,581 INFO L131 PetriNetUnfolder]: For 60/68 co-relation queries the response was YES. [2023-01-28 09:29:03,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 348 events. 212/348 cut-off events. For 60/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1057 event pairs, 56 based on Foata normal form. 28/323 useless extension candidates. Maximal degree in co-relation 798. Up to 176 conditions per place. [2023-01-28 09:29:03,583 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 35 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-01-28 09:29:03,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 254 flow [2023-01-28 09:29:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:29:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:29:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 965 transitions. [2023-01-28 09:29:03,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621013133208255 [2023-01-28 09:29:03,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 965 transitions. [2023-01-28 09:29:03,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 965 transitions. [2023-01-28 09:29:03,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:03,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 965 transitions. [2023-01-28 09:29:03,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:03,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:03,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:03,591 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 125 flow. Second operand 5 states and 965 transitions. [2023-01-28 09:29:03,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 254 flow [2023-01-28 09:29:03,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 239 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 09:29:03,595 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 178 flow [2023-01-28 09:29:03,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 09:29:03,596 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2023-01-28 09:29:03,596 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 178 flow [2023-01-28 09:29:03,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:03,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:03,597 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] [2023-01-28 09:29:03,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 09:29:03,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:03,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:03,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:03,802 INFO L85 PathProgramCache]: Analyzing trace with hash 894191198, now seen corresponding path program 1 times [2023-01-28 09:29:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:03,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992062672] [2023-01-28 09:29:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:03,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:03,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:03,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690022329] [2023-01-28 09:29:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:03,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:03,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:03,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:29:03,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:29:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:03,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 09:29:03,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:29:04,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:29:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992062672] [2023-01-28 09:29:04,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690022329] [2023-01-28 09:29:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690022329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:29:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:29:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:29:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080788639] [2023-01-28 09:29:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:29:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:29:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:29:04,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 533 [2023-01-28 09:29:04,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 178.66666666666666) internal successors, (1072), 6 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:04,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 533 [2023-01-28 09:29:04,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:04,394 INFO L130 PetriNetUnfolder]: 212/350 cut-off events. [2023-01-28 09:29:04,394 INFO L131 PetriNetUnfolder]: For 127/135 co-relation queries the response was YES. [2023-01-28 09:29:04,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 350 events. 212/350 cut-off events. For 127/135 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1056 event pairs, 128 based on Foata normal form. 9/307 useless extension candidates. Maximal degree in co-relation 925. Up to 339 conditions per place. [2023-01-28 09:29:04,395 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 31 selfloop transitions, 2 changer transitions 7/42 dead transitions. [2023-01-28 09:29:04,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 282 flow [2023-01-28 09:29:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:29:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:29:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1435 transitions. [2023-01-28 09:29:04,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2023-01-28 09:29:04,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1435 transitions. [2023-01-28 09:29:04,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1435 transitions. [2023-01-28 09:29:04,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:04,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1435 transitions. [2023-01-28 09:29:04,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 179.375) internal successors, (1435), 8 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,404 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 178 flow. Second operand 8 states and 1435 transitions. [2023-01-28 09:29:04,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 282 flow [2023-01-28 09:29:04,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:29:04,406 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 162 flow [2023-01-28 09:29:04,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-01-28 09:29:04,406 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-01-28 09:29:04,407 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 162 flow [2023-01-28 09:29:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.66666666666666) internal successors, (1072), 6 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:04,407 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] [2023-01-28 09:29:04,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:29:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:04,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:04,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1413036971, now seen corresponding path program 1 times [2023-01-28 09:29:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:04,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248656858] [2023-01-28 09:29:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:04,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454229494] [2023-01-28 09:29:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:04,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:04,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:04,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:29:04,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:29:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:04,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:29:04,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:29:04,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:29:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:29:04,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248656858] [2023-01-28 09:29:04,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454229494] [2023-01-28 09:29:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454229494] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:29:04,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:29:04,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 09:29:04,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560693455] [2023-01-28 09:29:04,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:04,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:29:04,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:04,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:29:04,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:29:04,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 533 [2023-01-28 09:29:04,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:04,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 533 [2023-01-28 09:29:04,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:04,843 INFO L130 PetriNetUnfolder]: 178/310 cut-off events. [2023-01-28 09:29:04,843 INFO L131 PetriNetUnfolder]: For 137/145 co-relation queries the response was YES. [2023-01-28 09:29:04,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 310 events. 178/310 cut-off events. For 137/145 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 972 event pairs, 104 based on Foata normal form. 9/274 useless extension candidates. Maximal degree in co-relation 818. Up to 286 conditions per place. [2023-01-28 09:29:04,845 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-01-28 09:29:04,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 232 flow [2023-01-28 09:29:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:29:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:29:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-01-28 09:29:04,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374484052532833 [2023-01-28 09:29:04,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-01-28 09:29:04,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-01-28 09:29:04,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:04,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-01-28 09:29:04,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,851 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,851 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 162 flow. Second operand 5 states and 998 transitions. [2023-01-28 09:29:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 232 flow [2023-01-28 09:29:04,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 212 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 09:29:04,852 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 160 flow [2023-01-28 09:29:04,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-01-28 09:29:04,853 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-01-28 09:29:04,853 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 160 flow [2023-01-28 09:29:04,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:04,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:04,854 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] [2023-01-28 09:29:04,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 09:29:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:05,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:05,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 527810065, now seen corresponding path program 1 times [2023-01-28 09:29:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:05,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420963871] [2023-01-28 09:29:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:05,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:05,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434807184] [2023-01-28 09:29:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:05,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:05,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:05,070 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:29:05,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:29:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:05,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 09:29:05,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 09:29:05,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:29:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 09:29:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:29:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420963871] [2023-01-28 09:29:05,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:29:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434807184] [2023-01-28 09:29:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434807184] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:29:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:29:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 09:29:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530793862] [2023-01-28 09:29:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:29:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:29:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:29:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:29:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:29:05,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 533 [2023-01-28 09:29:05,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:05,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:29:05,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 533 [2023-01-28 09:29:05,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:29:05,312 INFO L130 PetriNetUnfolder]: 193/340 cut-off events. [2023-01-28 09:29:05,312 INFO L131 PetriNetUnfolder]: For 262/276 co-relation queries the response was YES. [2023-01-28 09:29:05,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 193/340 cut-off events. For 262/276 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1080 event pairs, 78 based on Foata normal form. 14/332 useless extension candidates. Maximal degree in co-relation 912. Up to 197 conditions per place. [2023-01-28 09:29:05,313 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-01-28 09:29:05,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 309 flow [2023-01-28 09:29:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:29:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:29:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2023-01-28 09:29:05,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36848030018761724 [2023-01-28 09:29:05,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2023-01-28 09:29:05,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2023-01-28 09:29:05,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:29:05,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2023-01-28 09:29:05,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:05,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:05,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:05,320 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 160 flow. Second operand 5 states and 982 transitions. [2023-01-28 09:29:05,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 309 flow [2023-01-28 09:29:05,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:29:05,321 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 178 flow [2023-01-28 09:29:05,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 09:29:05,322 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2023-01-28 09:29:05,322 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 178 flow [2023-01-28 09:29:05,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:29:05,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:29:05,322 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] [2023-01-28 09:29:05,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:29:05,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:05,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:29:05,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:29:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1892160258, now seen corresponding path program 1 times [2023-01-28 09:29:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:29:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323958458] [2023-01-28 09:29:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:29:05,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 09:29:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194995601] [2023-01-28 09:29:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:29:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:29:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:29:05,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:29:05,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:29:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:29:05,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 82 conjunts are in the unsatisfiable core [2023-01-28 09:29:05,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:29:05,783 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-01-28 09:29:05,783 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-01-28 09:29:05,816 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 09:29:05,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 09:29:05,859 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 09:29:05,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-01-28 09:29:05,902 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-28 09:29:05,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 09:29:05,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2023-01-28 09:29:06,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:29:06,039 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 23 [2023-01-28 09:29:06,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:29:06,086 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 23 [2023-01-28 09:29:06,212 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 15 [2023-01-28 09:29:06,222 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 23 [2023-01-28 09:29:06,663 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-01-28 09:29:06,664 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 59 [2023-01-28 09:29:06,677 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-01-28 09:29:06,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-01-28 09:29:06,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-01-28 09:29:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:29:06,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:29:07,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:29:07,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 322 treesize of output 290 [2023-01-28 09:29:07,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 143 treesize of output 137 [2023-01-28 09:29:56,179 WARN L222 SmtUtils]: Spent 44.33s on a formula simplification. DAG size of input: 96 DAG size of output: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:30:16,535 WARN L222 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:30:38,991 WARN L222 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:30:47,150 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 09:30:47,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1629 treesize of output 1427 [2023-01-28 09:30:57,300 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 09:30:57,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1693 treesize of output 1491 [2023-01-28 09:31:00,016 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-01-28 09:31:00,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1651 treesize of output 1349 [2023-01-28 09:31:05,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:31:05,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2023-01-28 09:31:05,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:31:05,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 155 treesize of output 151 [2023-01-28 09:31:05,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 138 treesize of output 130 [2023-01-28 09:31:05,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 130 treesize of output 128 [2023-01-28 09:31:05,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 128 treesize of output 124 [2023-01-28 09:31:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:31:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:31:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323958458] [2023-01-28 09:31:06,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 09:31:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194995601] [2023-01-28 09:31:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194995601] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:31:06,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:31:06,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-01-28 09:31:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969980157] [2023-01-28 09:31:06,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 09:31:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 09:31:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:31:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 09:31:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=968, Unknown=36, NotChecked=0, Total=1122 [2023-01-28 09:31:06,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 533 [2023-01-28 09:31:06,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 178 flow. Second operand has 34 states, 34 states have (on average 128.64705882352942) internal successors, (4374), 34 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:31:06,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:31:06,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 533 [2023-01-28 09:31:06,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:31:30,131 WARN L222 SmtUtils]: Spent 12.99s on a formula simplification. DAG size of input: 138 DAG size of output: 112 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:31:46,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:32:37,951 WARN L222 SmtUtils]: Spent 32.66s on a formula simplification. DAG size of input: 167 DAG size of output: 145 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:33:37,715 WARN L222 SmtUtils]: Spent 38.37s on a formula simplification. DAG size of input: 210 DAG size of output: 167 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:33:39,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:33:41,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:34:35,915 WARN L222 SmtUtils]: Spent 30.62s on a formula simplification. DAG size of input: 189 DAG size of output: 158 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:34:37,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:34:40,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:36:23,946 WARN L222 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 232 DAG size of output: 194 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:36:26,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:36:28,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:36:30,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:36:32,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:37:42,167 WARN L222 SmtUtils]: Spent 38.79s on a formula simplification. DAG size of input: 199 DAG size of output: 177 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:37:45,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:37:47,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:37:49,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:37:51,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:39:40,138 WARN L222 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 242 DAG size of output: 199 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:39:42,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:39:44,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:39:46,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:39:49,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:39:51,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:41,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:43,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:45,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:48,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:50,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:51,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:54,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:56,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:57,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:40:59,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:41:03,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:06,881 WARN L222 SmtUtils]: Spent 13.67s on a formula simplification. DAG size of input: 192 DAG size of output: 154 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:42:09,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:12,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:14,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:16,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:19,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:21,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:24,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:26,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:28,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:30,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:32,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:34,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:55,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:57,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:42:59,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:01,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:04,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:06,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:08,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:11,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:13,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:15,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:16,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:18,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:20,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:22,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:23,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] Received shutdown request... [2023-01-28 09:43:24,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:43:24,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:43:25,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:25,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-01-28 09:43:25,693 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:43:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:43:25,693 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 09:43:25,694 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:43:25,694 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:43:25,695 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:25,696 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:43:25,696 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:43:25,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:43:25 BasicIcfg [2023-01-28 09:43:25,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:43:25,698 INFO L158 Benchmark]: Toolchain (without parser) took 880874.22ms. Allocated memory was 358.6MB in the beginning and 811.6MB in the end (delta: 453.0MB). Free memory was 319.4MB in the beginning and 744.8MB in the end (delta: -425.4MB). Peak memory consumption was 490.4MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,698 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 307.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:43:25,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.66ms. Allocated memory is still 358.6MB. Free memory was 319.4MB in the beginning and 307.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.65ms. Allocated memory is still 358.6MB. Free memory was 307.4MB in the beginning and 305.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,699 INFO L158 Benchmark]: Boogie Preprocessor took 19.88ms. Allocated memory is still 358.6MB. Free memory was 305.3MB in the beginning and 303.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,699 INFO L158 Benchmark]: RCFGBuilder took 544.63ms. Allocated memory is still 358.6MB. Free memory was 303.6MB in the beginning and 280.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,699 INFO L158 Benchmark]: TraceAbstraction took 879934.03ms. Allocated memory was 358.6MB in the beginning and 811.6MB in the end (delta: 453.0MB). Free memory was 279.2MB in the beginning and 744.8MB in the end (delta: -465.6MB). Peak memory consumption was 450.6MB. Max. memory is 16.0GB. [2023-01-28 09:43:25,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 307.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 321.66ms. Allocated memory is still 358.6MB. Free memory was 319.4MB in the beginning and 307.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.65ms. Allocated memory is still 358.6MB. Free memory was 307.4MB in the beginning and 305.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.88ms. Allocated memory is still 358.6MB. Free memory was 305.3MB in the beginning and 303.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 544.63ms. Allocated memory is still 358.6MB. Free memory was 303.6MB in the beginning and 280.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 879934.03ms. Allocated memory was 358.6MB in the beginning and 811.6MB in the end (delta: 453.0MB). Free memory was 279.2MB in the beginning and 744.8MB in the end (delta: -465.6MB). Peak memory consumption was 450.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.5s, 228 PlacesBefore, 28 PlacesAfterwards, 247 TransitionsBefore, 28 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 8 FixpointIterations, 173 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 55 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 276 TotalNumberOfCompositions, 1519 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1157, independent: 1082, independent conditional: 0, independent unconditional: 1082, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 511, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1157, independent: 590, independent conditional: 0, independent unconditional: 590, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 511, unknown conditional: 0, unknown unconditional: 511] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 263 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 879.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 740.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.6s, HoareTripleCheckerStatistics: 97 mSolverCounterUnknown, 688 SdHoareTripleChecker+Valid, 128.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 688 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 127.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2000 IncrementalHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 8 mSDtfsCounter, 2000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 714.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 0.4s SatisfiabilityAnalysisTime, 121.0s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 283 ConstructedInterpolants, 33 QuantifiedInterpolants, 5844 SizeOfPredicates, 51 NumberOfNonLiveVariables, 2431 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 35/50 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown