/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:12:49,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:12:49,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:12:49,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:12:49,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:12:49,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:12:49,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:12:49,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:12:49,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:12:49,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:12:49,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:12:49,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:12:49,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:12:49,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:12:49,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:12:49,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:12:49,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:12:49,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:12:49,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:12:49,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:12:49,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:12:49,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:12:49,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:12:49,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:12:49,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 04:12:49,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:12:49,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:12:49,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:12:49,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:12:49,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:12:49,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:12:49,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:12:49,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:12:49,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:12:49,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:12:49,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:12:49,282 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 04:12:49,319 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:12:49,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:12:49,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:12:49,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:12:49,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:12:49,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:12:49,322 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:12:49,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:12:49,322 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:12:49,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:12:49,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:12:49,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:12:49,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:12:49,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:12:49,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:12:49,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:12:49,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:12:49,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:12:49,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:12:49,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:12:49,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:12:49,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:12:49,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:12:49,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:12:49,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:12:49,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:12:49,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:12:49,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:12:49,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:12:49,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:12:49,607 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:12:49,615 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:12:49,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2023-01-28 04:12:50,677 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:12:50,891 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:12:50,892 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2023-01-28 04:12:50,898 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c911aa0ed/88830f159c4440b1a6b1444da3cb74ae/FLAG57b174b16 [2023-01-28 04:12:50,911 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c911aa0ed/88830f159c4440b1a6b1444da3cb74ae [2023-01-28 04:12:50,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:12:50,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:12:50,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:12:50,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:12:50,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:12:50,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:12:50" (1/1) ... [2023-01-28 04:12:50,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f371fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:50, skipping insertion in model container [2023-01-28 04:12:50,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:12:50" (1/1) ... [2023-01-28 04:12:50,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:12:50,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:12:51,090 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/popl20-horseshoe.wvr.c[3424,3437] [2023-01-28 04:12:51,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:12:51,107 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:12:51,129 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/popl20-horseshoe.wvr.c[3424,3437] [2023-01-28 04:12:51,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:12:51,151 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:12:51,151 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:12:51,157 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:12:51,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51 WrapperNode [2023-01-28 04:12:51,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:12:51,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:12:51,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:12:51,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:12:51,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,205 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 252 [2023-01-28 04:12:51,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:12:51,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:12:51,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:12:51,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:12:51,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:12:51,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:12:51,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:12:51,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:12:51,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (1/1) ... [2023-01-28 04:12:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:12:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:12:51,285 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 04:12:51,291 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 04:12:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:12:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:12:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:12:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:12:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:12:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:12:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:12:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:12:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:12:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:12:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:12:51,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:12:51,321 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 04:12:51,442 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:12:51,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:12:51,736 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:12:51,818 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:12:51,818 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-28 04:12:51,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:12:51 BoogieIcfgContainer [2023-01-28 04:12:51,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:12:51,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:12:51,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:12:51,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:12:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:12:50" (1/3) ... [2023-01-28 04:12:51,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f92bc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:12:51, skipping insertion in model container [2023-01-28 04:12:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:12:51" (2/3) ... [2023-01-28 04:12:51,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f92bc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:12:51, skipping insertion in model container [2023-01-28 04:12:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:12:51" (3/3) ... [2023-01-28 04:12:51,825 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2023-01-28 04:12:51,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:12:51,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:12:51,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:12:51,880 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:12:51,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 426 flow [2023-01-28 04:12:51,984 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2023-01-28 04:12:51,984 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:12:51,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 18/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-01-28 04:12:51,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 201 transitions, 426 flow [2023-01-28 04:12:52,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 188 transitions, 394 flow [2023-01-28 04:12:52,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:12:52,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 188 transitions, 394 flow [2023-01-28 04:12:52,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 188 transitions, 394 flow [2023-01-28 04:12:52,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 188 transitions, 394 flow [2023-01-28 04:12:52,072 INFO L130 PetriNetUnfolder]: 18/188 cut-off events. [2023-01-28 04:12:52,072 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:12:52,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 18/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-01-28 04:12:52,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 1456 [2023-01-28 04:12:57,400 INFO L134 LiptonReduction]: Checked pairs total: 2169 [2023-01-28 04:12:57,400 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-01-28 04:12:57,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:12:57,457 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;@6c0dc41, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:12:57,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:12:57,483 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-01-28 04:12:57,483 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:12:57,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:12:57,484 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 04:12:57,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:12:57,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:12:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1991589664, now seen corresponding path program 1 times [2023-01-28 04:12:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:12:57,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960540985] [2023-01-28 04:12:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:12:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:12:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:12:57,722 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 04:12:57,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:12:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960540985] [2023-01-28 04:12:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960540985] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:12:57,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:12:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:12:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845180754] [2023-01-28 04:12:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:12:57,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 04:12:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:12:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 04:12:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 04:12:57,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 400 [2023-01-28 04:12:57,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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 04:12:57,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:12:57,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 400 [2023-01-28 04:12:57,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:12:57,853 INFO L130 PetriNetUnfolder]: 321/458 cut-off events. [2023-01-28 04:12:57,853 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-28 04:12:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 458 events. 321/458 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1470 event pairs, 166 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 732. Up to 449 conditions per place. [2023-01-28 04:12:57,860 INFO L137 encePairwiseOnDemand]: 399/400 looper letters, 24 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-01-28 04:12:57,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-01-28 04:12:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 04:12:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 04:12:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-01-28 04:12:57,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47125 [2023-01-28 04:12:57,875 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-01-28 04:12:57,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-01-28 04:12:57,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:12:57,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-01-28 04:12:57,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 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 04:12:57,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 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 04:12:57,887 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 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 04:12:57,889 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 377 transitions. [2023-01-28 04:12:57,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-01-28 04:12:57,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:12:57,893 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2023-01-28 04:12:57,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-28 04:12:57,898 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-01-28 04:12:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2023-01-28 04:12:57,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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 04:12:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:12:57,899 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] [2023-01-28 04:12:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:12:57,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:12:57,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:12:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1850484059, now seen corresponding path program 1 times [2023-01-28 04:12:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:12:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444768646] [2023-01-28 04:12:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:12:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:12:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:12:58,146 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 04:12:58,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:12:58,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444768646] [2023-01-28 04:12:58,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444768646] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:12:58,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:12:58,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:12:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587339671] [2023-01-28 04:12:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:12:58,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:12:58,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:12:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:12:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:12:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 400 [2023-01-28 04:12:58,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 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 04:12:58,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:12:58,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 400 [2023-01-28 04:12:58,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:12:58,256 INFO L130 PetriNetUnfolder]: 326/478 cut-off events. [2023-01-28 04:12:58,256 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:12:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 478 events. 326/478 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1521 event pairs, 167 based on Foata normal form. 16/336 useless extension candidates. Maximal degree in co-relation 962. Up to 449 conditions per place. [2023-01-28 04:12:58,258 INFO L137 encePairwiseOnDemand]: 394/400 looper letters, 23 selfloop transitions, 2 changer transitions 11/39 dead transitions. [2023-01-28 04:12:58,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 159 flow [2023-01-28 04:12:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:12:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:12:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-01-28 04:12:58,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401875 [2023-01-28 04:12:58,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-01-28 04:12:58,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-01-28 04:12:58,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:12:58,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-01-28 04:12:58,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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 04:12:58,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 400.0) internal successors, (2000), 5 states have internal predecessors, (2000), 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 04:12:58,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 400.0) internal successors, (2000), 5 states have internal predecessors, (2000), 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 04:12:58,265 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 4 states and 643 transitions. [2023-01-28 04:12:58,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 159 flow [2023-01-28 04:12:58,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 04:12:58,266 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 78 flow [2023-01-28 04:12:58,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 04:12:58,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-01-28 04:12:58,267 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 78 flow [2023-01-28 04:12:58,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 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 04:12:58,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:12:58,267 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] [2023-01-28 04:12:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:12:58,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:12:58,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:12:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1330974784, now seen corresponding path program 1 times [2023-01-28 04:12:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:12:58,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693810150] [2023-01-28 04:12:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:12:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:12:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:12:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:12:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:12:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693810150] [2023-01-28 04:12:58,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693810150] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:12:58,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:12:58,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:12:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371222845] [2023-01-28 04:12:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:12:58,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:12:58,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:12:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:12:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:12:58,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 400 [2023-01-28 04:12:58,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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 04:12:58,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:12:58,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 400 [2023-01-28 04:12:58,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:12:58,470 INFO L130 PetriNetUnfolder]: 368/551 cut-off events. [2023-01-28 04:12:58,470 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2023-01-28 04:12:58,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 551 events. 368/551 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1947 event pairs, 194 based on Foata normal form. 24/403 useless extension candidates. Maximal degree in co-relation 1341. Up to 447 conditions per place. [2023-01-28 04:12:58,472 INFO L137 encePairwiseOnDemand]: 392/400 looper letters, 23 selfloop transitions, 3 changer transitions 12/41 dead transitions. [2023-01-28 04:12:58,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 190 flow [2023-01-28 04:12:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:12:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:12:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-01-28 04:12:58,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398 [2023-01-28 04:12:58,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-01-28 04:12:58,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-01-28 04:12:58,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:12:58,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-01-28 04:12:58,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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 04:12:58,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 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 04:12:58,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 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 04:12:58,479 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 78 flow. Second operand 5 states and 796 transitions. [2023-01-28 04:12:58,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 190 flow [2023-01-28 04:12:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 186 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:12:58,480 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 96 flow [2023-01-28 04:12:58,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-01-28 04:12:58,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-01-28 04:12:58,481 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 96 flow [2023-01-28 04:12:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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 04:12:58,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:12:58,481 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 04:12:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 04:12:58,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:12:58,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:12:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash 80366818, now seen corresponding path program 1 times [2023-01-28 04:12:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:12:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161008215] [2023-01-28 04:12:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:12:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:12:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:12:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:12:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:12:58,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161008215] [2023-01-28 04:12:58,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161008215] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:12:58,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:12:58,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:12:58,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568022295] [2023-01-28 04:12:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:12:58,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:12:58,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:12:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:12:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:12:58,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 400 [2023-01-28 04:12:58,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 04:12:58,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:12:58,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 400 [2023-01-28 04:12:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:12:58,656 INFO L130 PetriNetUnfolder]: 340/486 cut-off events. [2023-01-28 04:12:58,657 INFO L131 PetriNetUnfolder]: For 145/169 co-relation queries the response was YES. [2023-01-28 04:12:58,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 486 events. 340/486 cut-off events. For 145/169 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1458 event pairs, 48 based on Foata normal form. 10/329 useless extension candidates. Maximal degree in co-relation 1360. Up to 390 conditions per place. [2023-01-28 04:12:58,659 INFO L137 encePairwiseOnDemand]: 395/400 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-01-28 04:12:58,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 200 flow [2023-01-28 04:12:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:12:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:12:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-01-28 04:12:58,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-01-28 04:12:58,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-01-28 04:12:58,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-01-28 04:12:58,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:12:58,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-01-28 04:12:58,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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 04:12:58,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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 04:12:58,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 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 04:12:58,664 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 96 flow. Second operand 3 states and 552 transitions. [2023-01-28 04:12:58,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 200 flow [2023-01-28 04:12:58,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 04:12:58,665 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-01-28 04:12:58,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-28 04:12:58,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-01-28 04:12:58,666 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-01-28 04:12:58,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 04:12:58,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:12:58,667 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 04:12:58,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:12:58,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:12:58,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:12:58,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1541808918, now seen corresponding path program 2 times [2023-01-28 04:12:58,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:12:58,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252549464] [2023-01-28 04:12:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:12:58,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:12:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:13:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:13:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:13:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252549464] [2023-01-28 04:13:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252549464] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:13:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507343123] [2023-01-28 04:13:00,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:13:00,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:13:00,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:13:00,418 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 04:13:00,436 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 04:13:00,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 04:13:00,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:13:00,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 04:13:00,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:13:00,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:00,802 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:13:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:13:00,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:13:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507343123] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:13:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:13:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 18 [2023-01-28 04:13:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068774136] [2023-01-28 04:13:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:13:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 04:13:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:13:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 04:13:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:13:00,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 400 [2023-01-28 04:13:00,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 9 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 04:13:00,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:13:00,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 400 [2023-01-28 04:13:00,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:13:01,203 INFO L130 PetriNetUnfolder]: 282/446 cut-off events. [2023-01-28 04:13:01,203 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2023-01-28 04:13:01,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 446 events. 282/446 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1383 event pairs, 57 based on Foata normal form. 5/330 useless extension candidates. Maximal degree in co-relation 1388. Up to 360 conditions per place. [2023-01-28 04:13:01,205 INFO L137 encePairwiseOnDemand]: 389/400 looper letters, 36 selfloop transitions, 8 changer transitions 22/68 dead transitions. [2023-01-28 04:13:01,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 349 flow [2023-01-28 04:13:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:13:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:13:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1154 transitions. [2023-01-28 04:13:01,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360625 [2023-01-28 04:13:01,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1154 transitions. [2023-01-28 04:13:01,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1154 transitions. [2023-01-28 04:13:01,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:13:01,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1154 transitions. [2023-01-28 04:13:01,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.25) internal successors, (1154), 8 states have internal predecessors, (1154), 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 04:13:01,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:13:01,214 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:13:01,214 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 8 states and 1154 transitions. [2023-01-28 04:13:01,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 349 flow [2023-01-28 04:13:01,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 329 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 04:13:01,218 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 168 flow [2023-01-28 04:13:01,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-01-28 04:13:01,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-01-28 04:13:01,220 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 168 flow [2023-01-28 04:13:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 04:13:01,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:13:01,220 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 04:13:01,225 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 04:13:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:13:01,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:13:01,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:13:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1719258706, now seen corresponding path program 3 times [2023-01-28 04:13:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:13:01,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735721782] [2023-01-28 04:13:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:13:01,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:13:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:13:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:13:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:13:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735721782] [2023-01-28 04:13:02,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735721782] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:13:02,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502515810] [2023-01-28 04:13:02,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:13:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:13:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:13:02,834 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 04:13:02,879 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 04:13:03,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 04:13:03,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:13:03,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 04:13:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:13:03,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:03,201 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:13:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:13:03,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:13:03,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502515810] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:13:03,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:13:03,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 17 [2023-01-28 04:13:03,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128408208] [2023-01-28 04:13:03,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:13:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 04:13:03,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:13:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 04:13:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:13:03,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 400 [2023-01-28 04:13:03,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 168 flow. Second operand has 9 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 04:13:03,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:13:03,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 400 [2023-01-28 04:13:03,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:13:03,690 INFO L130 PetriNetUnfolder]: 297/503 cut-off events. [2023-01-28 04:13:03,690 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-28 04:13:03,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 503 events. 297/503 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1833 event pairs, 61 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1722. Up to 380 conditions per place. [2023-01-28 04:13:03,695 INFO L137 encePairwiseOnDemand]: 388/400 looper letters, 39 selfloop transitions, 8 changer transitions 25/74 dead transitions. [2023-01-28 04:13:03,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 439 flow [2023-01-28 04:13:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:13:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:13:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1153 transitions. [2023-01-28 04:13:03,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3603125 [2023-01-28 04:13:03,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1153 transitions. [2023-01-28 04:13:03,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1153 transitions. [2023-01-28 04:13:03,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:13:03,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1153 transitions. [2023-01-28 04:13:03,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 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 04:13:03,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:13:03,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:13:03,713 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 168 flow. Second operand 8 states and 1153 transitions. [2023-01-28 04:13:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 439 flow [2023-01-28 04:13:03,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 421 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 04:13:03,717 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 219 flow [2023-01-28 04:13:03,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=219, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-01-28 04:13:03,720 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 04:13:03,720 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 219 flow [2023-01-28 04:13:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 04:13:03,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:13:03,721 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 04:13:03,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:13:03,928 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,SelfDestructingSolverStorable5 [2023-01-28 04:13:03,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:13:03,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:13:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1871079068, now seen corresponding path program 4 times [2023-01-28 04:13:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:13:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247506765] [2023-01-28 04:13:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:13:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:13:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:13:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:13:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:13:05,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247506765] [2023-01-28 04:13:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247506765] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:13:05,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892721811] [2023-01-28 04:13:05,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:13:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:13:05,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:13:05,308 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 04:13:05,338 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 04:13:05,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:13:05,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:13:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 04:13:05,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:13:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:05,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:05,447 INFO L321 Elim1Store]: treesize reduction 47, result has 36.5 percent of original size [2023-01-28 04:13:05,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 32 [2023-01-28 04:13:05,502 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 04:13:05,570 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:13:05,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:13:05,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:13:05,700 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:13:05,766 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:13:06,151 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-01-28 04:13:06,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 53 [2023-01-28 04:13:06,166 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 04:13:06,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2023-01-28 04:13:06,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:13:06,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:06,349 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 21 treesize of output 12 [2023-01-28 04:13:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:13:06,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:13:06,495 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse0 (* c_~t~0 2)) (.cse1 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_262 (Array Int Int))) (< (+ .cse0 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse1)) 1) c_~s~0)) (forall ((v_ArrVal_262 (Array Int Int))) (<= c_~s~0 (+ .cse0 2 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse1)))))))) is different from false [2023-01-28 04:13:06,623 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~q2~0.base) (+ (* c_~q2_back~0 4) c_~q2~0.offset)))) (or (< c_~q2_back~0 0) (<= c_~n2~0 c_~q2_back~0) (forall ((~q1_front~0 Int)) (or (< ~q1_front~0 0) (<= c_~n1~0 ~q1_front~0) (not (= (select (select |c_#memory_int| c_~q1~0.base) (+ c_~q1~0.offset (* ~q1_front~0 4))) (+ .cse0 1))))) (<= c_~n2~0 c_~q2_front~0) (let ((.cse3 (+ c_~s~0 .cse0)) (.cse1 (* c_~t~0 2)) (.cse2 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_262 (Array Int Int))) (< (+ .cse1 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse2))) .cse3)) (forall ((v_ArrVal_262 (Array Int Int))) (<= .cse3 (+ .cse1 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse2)) 1))))) (< c_~q2_front~0 0))) is different from false [2023-01-28 04:13:06,668 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_~q1~0.base)) (.cse1 (select (select |c_#memory_int| c_~q2~0.base) (+ (* c_~q2_back~0 4) c_~q2~0.offset)))) (or (< c_~q2_back~0 0) (forall ((~q1_back~0 Int)) (or (<= c_~n1~0 ~q1_back~0) (not (= (select .cse0 (+ (* ~q1_back~0 4) c_~q1~0.offset)) 0)) (< ~q1_back~0 0))) (<= c_~n2~0 c_~q2_back~0) (forall ((~q1_front~0 Int)) (or (< ~q1_front~0 0) (<= c_~n1~0 ~q1_front~0) (not (= (select .cse0 (+ c_~q1~0.offset (* ~q1_front~0 4))) (+ .cse1 1))))) (<= c_~n2~0 c_~q2_front~0) (let ((.cse4 (+ c_~s~0 .cse1)) (.cse2 (* c_~t~0 2)) (.cse3 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_262 (Array Int Int))) (< (+ .cse2 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse3))) .cse4)) (forall ((v_ArrVal_262 (Array Int Int))) (<= .cse4 (+ .cse2 (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_262) c_~q2~0.base) .cse3)) 1))))) (< c_~q2_front~0 0))) is different from false [2023-01-28 04:13:16,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:16,194 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 165 treesize of output 117 [2023-01-28 04:13:16,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:16,230 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 3894 treesize of output 3822 [2023-01-28 04:13:16,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:16,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:16,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1172 treesize of output 992 [2023-01-28 04:13:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:16,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:16,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 956 treesize of output 884 [2023-01-28 04:13:16,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:16,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:16,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 848 treesize of output 806 [2023-01-28 04:13:16,511 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 98 treesize of output 82 [2023-01-28 04:13:21,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:21,650 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 164 treesize of output 116 [2023-01-28 04:13:21,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:13:21,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:21,675 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 4442 treesize of output 4290 [2023-01-28 04:13:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:21,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:21,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 995 treesize of output 927 [2023-01-28 04:13:21,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:21,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:21,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 904 treesize of output 866 [2023-01-28 04:13:21,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:13:22,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:13:22,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 870 treesize of output 698 [2023-01-28 04:13:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:13:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892721811] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:13:29,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:13:29,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-01-28 04:13:29,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446993950] [2023-01-28 04:13:29,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:13:29,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:13:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:13:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:13:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=842, Unknown=5, NotChecked=180, Total=1122 [2023-01-28 04:13:29,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 400 [2023-01-28 04:13:29,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 219 flow. Second operand has 34 states, 34 states have (on average 103.73529411764706) internal successors, (3527), 34 states have internal predecessors, (3527), 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 04:13:29,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:13:29,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 400 [2023-01-28 04:13:29,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:13:36,656 WARN L222 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 177 DAG size of output: 169 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:13:38,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:14:20,407 WARN L222 SmtUtils]: Spent 30.70s on a formula simplification. DAG size of input: 290 DAG size of output: 247 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:14:31,812 WARN L222 SmtUtils]: Spent 10.24s on a formula simplification that was a NOOP. DAG size: 204 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:14:55,569 WARN L222 SmtUtils]: Spent 23.30s on a formula simplification. DAG size of input: 277 DAG size of output: 241 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:15:26,132 WARN L222 SmtUtils]: Spent 21.12s on a formula simplification that was a NOOP. DAG size: 185 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:15:28,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:15:30,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:15:32,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 04:15:33,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 04:16:14,309 WARN L222 SmtUtils]: Spent 35.94s on a formula simplification. DAG size of input: 269 DAG size of output: 261 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:16:38,208 WARN L222 SmtUtils]: Spent 16.12s on a formula simplification. DAG size of input: 278 DAG size of output: 239 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:16:59,488 WARN L222 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 273 DAG size of output: 231 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:17:01,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:02,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:04,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:06,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:09,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:11,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:13,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:17:30,685 WARN L222 SmtUtils]: Spent 11.82s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:18:17,801 WARN L222 SmtUtils]: Spent 42.89s on a formula simplification. DAG size of input: 273 DAG size of output: 262 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:18:50,598 WARN L222 SmtUtils]: Spent 24.14s on a formula simplification. DAG size of input: 261 DAG size of output: 223 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:19:46,375 WARN L222 SmtUtils]: Spent 53.87s on a formula simplification. DAG size of input: 255 DAG size of output: 244 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:20:51,016 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 215 DAG size of output: 203 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:20:52,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 04:20:53,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:20:55,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:20:57,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:00,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:02,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:06,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:08,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:10,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:13,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:16,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:20,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:22,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:24,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-01-28 04:21:28,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:30,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:32,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:34,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:36,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:38,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:40,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:21:42,051 INFO L130 PetriNetUnfolder]: 763/1324 cut-off events. [2023-01-28 04:21:42,051 INFO L131 PetriNetUnfolder]: For 2296/2298 co-relation queries the response was YES. [2023-01-28 04:21:42,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4959 conditions, 1324 events. 763/1324 cut-off events. For 2296/2298 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6381 event pairs, 62 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 4943. Up to 481 conditions per place. [2023-01-28 04:21:42,058 INFO L137 encePairwiseOnDemand]: 378/400 looper letters, 123 selfloop transitions, 62 changer transitions 96/283 dead transitions. [2023-01-28 04:21:42,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 283 transitions, 1843 flow [2023-01-28 04:21:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-28 04:21:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-28 04:21:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4360 transitions. [2023-01-28 04:21:42,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2725 [2023-01-28 04:21:42,070 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4360 transitions. [2023-01-28 04:21:42,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4360 transitions. [2023-01-28 04:21:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:21:42,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4360 transitions. [2023-01-28 04:21:42,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 109.0) internal successors, (4360), 40 states have internal predecessors, (4360), 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 04:21:42,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 400.0) internal successors, (16400), 41 states have internal predecessors, (16400), 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 04:21:42,094 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 400.0) internal successors, (16400), 41 states have internal predecessors, (16400), 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 04:21:42,094 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 219 flow. Second operand 40 states and 4360 transitions. [2023-01-28 04:21:42,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 283 transitions, 1843 flow [2023-01-28 04:21:42,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 283 transitions, 1731 flow, removed 48 selfloop flow, removed 5 redundant places. [2023-01-28 04:21:42,103 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 818 flow [2023-01-28 04:21:42,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=818, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2023-01-28 04:21:42,104 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2023-01-28 04:21:42,104 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 818 flow [2023-01-28 04:21:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 103.73529411764706) internal successors, (3527), 34 states have internal predecessors, (3527), 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 04:21:42,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:21:42,105 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 04:21:42,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 04:21:42,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:21:42,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:21:42,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:21:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1105249356, now seen corresponding path program 5 times [2023-01-28 04:21:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:21:42,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50343622] [2023-01-28 04:21:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:21:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:21:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:21:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:21:43,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:21:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50343622] [2023-01-28 04:21:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50343622] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:21:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951166060] [2023-01-28 04:21:43,655 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:21:43,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:21:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:21:43,657 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 04:21:43,659 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 04:21:43,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:21:43,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:21:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 04:21:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:21:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:21:44,170 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:21:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:21:44,236 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:21:44,579 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:21:44,583 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:21:44,583 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 30 treesize of output 16 [2023-01-28 04:21:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:21:44,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:21:45,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:21:45,072 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 1102 treesize of output 1034 [2023-01-28 04:21:45,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:21:45,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 554 treesize of output 462 [2023-01-28 04:21:45,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:21:45,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 358 treesize of output 332 [2023-01-28 04:22:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:22:03,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951166060] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:22:03,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:22:03,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2023-01-28 04:22:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2443764] [2023-01-28 04:22:03,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:22:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-28 04:22:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:22:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-28 04:22:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=931, Unknown=10, NotChecked=0, Total=1056 [2023-01-28 04:22:03,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 400 [2023-01-28 04:22:03,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 818 flow. Second operand has 33 states, 33 states have (on average 110.93939393939394) internal successors, (3661), 33 states have internal predecessors, (3661), 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 04:22:03,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:22:03,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 400 [2023-01-28 04:22:03,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:22:10,639 INFO L130 PetriNetUnfolder]: 1720/2756 cut-off events. [2023-01-28 04:22:10,640 INFO L131 PetriNetUnfolder]: For 16510/16512 co-relation queries the response was YES. [2023-01-28 04:22:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15395 conditions, 2756 events. 1720/2756 cut-off events. For 16510/16512 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14028 event pairs, 103 based on Foata normal form. 4/2275 useless extension candidates. Maximal degree in co-relation 15359. Up to 1021 conditions per place. [2023-01-28 04:22:10,662 INFO L137 encePairwiseOnDemand]: 385/400 looper letters, 217 selfloop transitions, 172 changer transitions 52/443 dead transitions. [2023-01-28 04:22:10,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 443 transitions, 5019 flow [2023-01-28 04:22:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 04:22:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 04:22:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4912 transitions. [2023-01-28 04:22:10,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2923809523809524 [2023-01-28 04:22:10,672 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4912 transitions. [2023-01-28 04:22:10,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4912 transitions. [2023-01-28 04:22:10,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:22:10,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4912 transitions. [2023-01-28 04:22:10,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 116.95238095238095) internal successors, (4912), 42 states have internal predecessors, (4912), 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 04:22:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 400.0) internal successors, (17200), 43 states have internal predecessors, (17200), 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 04:22:10,708 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 400.0) internal successors, (17200), 43 states have internal predecessors, (17200), 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 04:22:10,708 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 818 flow. Second operand 42 states and 4912 transitions. [2023-01-28 04:22:10,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 443 transitions, 5019 flow [2023-01-28 04:22:10,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 443 transitions, 3816 flow, removed 576 selfloop flow, removed 11 redundant places. [2023-01-28 04:22:10,746 INFO L231 Difference]: Finished difference. Result has 140 places, 245 transitions, 2512 flow [2023-01-28 04:22:10,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2512, PETRI_PLACES=140, PETRI_TRANSITIONS=245} [2023-01-28 04:22:10,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2023-01-28 04:22:10,747 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 245 transitions, 2512 flow [2023-01-28 04:22:10,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 110.93939393939394) internal successors, (3661), 33 states have internal predecessors, (3661), 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 04:22:10,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:22:10,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:22:10,755 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 04:22:10,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:22:10,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:22:10,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:22:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1562981495, now seen corresponding path program 6 times [2023-01-28 04:22:10,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:22:10,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60909513] [2023-01-28 04:22:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:22:10,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:22:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:22:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:22:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:22:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60909513] [2023-01-28 04:22:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60909513] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:22:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297960566] [2023-01-28 04:22:13,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:22:13,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:22:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:22:13,458 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 04:22:13,458 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 04:22:13,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 04:22:13,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:22:13,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 04:22:13,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:22:13,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:22:13,968 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 04:22:13,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 40 [2023-01-28 04:22:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:22:14,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:22:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297960566] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:22:14,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:22:14,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 20 [2023-01-28 04:22:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285583034] [2023-01-28 04:22:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:22:14,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:22:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:22:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:22:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:22:14,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 400 [2023-01-28 04:22:14,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 245 transitions, 2512 flow. Second operand has 10 states, 10 states have (on average 133.2) internal successors, (1332), 10 states have internal predecessors, (1332), 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 04:22:14,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:22:14,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 400 [2023-01-28 04:22:14,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:22:14,611 INFO L130 PetriNetUnfolder]: 1634/2596 cut-off events. [2023-01-28 04:22:14,611 INFO L131 PetriNetUnfolder]: For 19871/19881 co-relation queries the response was YES. [2023-01-28 04:22:14,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 2596 events. 1634/2596 cut-off events. For 19871/19881 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12811 event pairs, 223 based on Foata normal form. 1/2368 useless extension candidates. Maximal degree in co-relation 15210. Up to 2376 conditions per place. [2023-01-28 04:22:14,632 INFO L137 encePairwiseOnDemand]: 390/400 looper letters, 235 selfloop transitions, 8 changer transitions 36/281 dead transitions. [2023-01-28 04:22:14,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 281 transitions, 3288 flow [2023-01-28 04:22:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:22:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:22:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1117 transitions. [2023-01-28 04:22:14,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3490625 [2023-01-28 04:22:14,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1117 transitions. [2023-01-28 04:22:14,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1117 transitions. [2023-01-28 04:22:14,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:22:14,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1117 transitions. [2023-01-28 04:22:14,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 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 04:22:14,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:22:14,638 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:22:14,638 INFO L175 Difference]: Start difference. First operand has 140 places, 245 transitions, 2512 flow. Second operand 8 states and 1117 transitions. [2023-01-28 04:22:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 281 transitions, 3288 flow [2023-01-28 04:22:14,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 281 transitions, 2704 flow, removed 271 selfloop flow, removed 13 redundant places. [2023-01-28 04:22:14,711 INFO L231 Difference]: Finished difference. Result has 130 places, 239 transitions, 1886 flow [2023-01-28 04:22:14,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1886, PETRI_PLACES=130, PETRI_TRANSITIONS=239} [2023-01-28 04:22:14,712 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2023-01-28 04:22:14,712 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 239 transitions, 1886 flow [2023-01-28 04:22:14,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.2) internal successors, (1332), 10 states have internal predecessors, (1332), 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 04:22:14,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:22:14,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:22:14,717 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 04:22:14,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:22:14,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:22:14,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:22:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1215612886, now seen corresponding path program 7 times [2023-01-28 04:22:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:22:14,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768052643] [2023-01-28 04:22:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:22:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:22:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:22:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:22:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:22:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768052643] [2023-01-28 04:22:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768052643] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:22:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663200067] [2023-01-28 04:22:16,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:22:16,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:22:16,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:22:16,336 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 04:22:16,338 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 04:22:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:22:16,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2023-01-28 04:22:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:22:16,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:22:16,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:22:16,469 INFO L321 Elim1Store]: treesize reduction 47, result has 36.5 percent of original size [2023-01-28 04:22:16,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 32 [2023-01-28 04:22:16,529 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 04:22:16,605 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 04:22:16,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:22:16,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:22:16,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:22:16,728 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:22:16,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:22:16,865 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 18 treesize of output 20 [2023-01-28 04:22:17,058 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-01-28 04:22:17,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 40 [2023-01-28 04:22:17,087 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 9 treesize of output 3 [2023-01-28 04:22:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:22:17,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:22:17,207 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_440 (Array Int Int))) (= c_~s~0 (+ (* c_~t~0 2) (* 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_440) c_~q2~0.base) (+ c_~q2~0.offset (* c_~q2_front~0 4)))) 2))) is different from false [2023-01-28 04:22:17,352 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_439 (Array Int Int)) (~q2~0.offset Int) (v_ArrVal_440 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_439))) (let ((.cse0 (select (select .cse1 c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (or (= (+ c_~s~0 .cse0) (+ (* c_~t~0 2) 2 (* (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_440) c_~q2~0.base) (+ ~q2~0.offset (* c_~q2_front~0 4))) 2))) (not (= .cse0 (+ (select (select .cse1 c_~q2~0.base) (+ ~q2~0.offset (* c_~q2_back~0 4))) 1))))))) is different from false [2023-01-28 04:22:17,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:22:17,736 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 168 treesize of output 120 [2023-01-28 04:22:17,756 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:22:17,757 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 12518 treesize of output 12126 [2023-01-28 04:22:18,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:22:18,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3044 treesize of output 2950 [2023-01-28 04:22:18,133 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 2022 treesize of output 1830 [2023-01-28 04:22:18,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:22:18,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2678 treesize of output 2506 [2023-01-28 04:22:18,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:22:18,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2380 treesize of output 1940 [2023-01-28 04:23:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663200067] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:02,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2023-01-28 04:23:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594527458] [2023-01-28 04:23:02,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 04:23:02,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 04:23:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=961, Unknown=6, NotChecked=126, Total=1190 [2023-01-28 04:23:02,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 400 [2023-01-28 04:23:02,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 239 transitions, 1886 flow. Second operand has 35 states, 35 states have (on average 103.77142857142857) internal successors, (3632), 35 states have internal predecessors, (3632), 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 04:23:02,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:02,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 400 [2023-01-28 04:23:02,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:13,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:23:16,928 INFO L130 PetriNetUnfolder]: 1985/3301 cut-off events. [2023-01-28 04:23:16,929 INFO L131 PetriNetUnfolder]: For 23100/23102 co-relation queries the response was YES. [2023-01-28 04:23:16,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17343 conditions, 3301 events. 1985/3301 cut-off events. For 23100/23102 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18459 event pairs, 274 based on Foata normal form. 41/3048 useless extension candidates. Maximal degree in co-relation 17302. Up to 2527 conditions per place. [2023-01-28 04:23:16,968 INFO L137 encePairwiseOnDemand]: 378/400 looper letters, 285 selfloop transitions, 143 changer transitions 94/524 dead transitions. [2023-01-28 04:23:16,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 524 transitions, 5278 flow [2023-01-28 04:23:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 04:23:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 04:23:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5095 transitions. [2023-01-28 04:23:16,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27101063829787236 [2023-01-28 04:23:16,973 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5095 transitions. [2023-01-28 04:23:16,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5095 transitions. [2023-01-28 04:23:16,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:16,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5095 transitions. [2023-01-28 04:23:16,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 108.40425531914893) internal successors, (5095), 47 states have internal predecessors, (5095), 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 04:23:16,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 400.0) internal successors, (19200), 48 states have internal predecessors, (19200), 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 04:23:16,989 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 400.0) internal successors, (19200), 48 states have internal predecessors, (19200), 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 04:23:16,989 INFO L175 Difference]: Start difference. First operand has 130 places, 239 transitions, 1886 flow. Second operand 47 states and 5095 transitions. [2023-01-28 04:23:16,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 524 transitions, 5278 flow [2023-01-28 04:23:17,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 524 transitions, 5082 flow, removed 79 selfloop flow, removed 7 redundant places. [2023-01-28 04:23:17,071 INFO L231 Difference]: Finished difference. Result has 189 places, 340 transitions, 3449 flow [2023-01-28 04:23:17,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3449, PETRI_PLACES=189, PETRI_TRANSITIONS=340} [2023-01-28 04:23:17,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2023-01-28 04:23:17,072 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 340 transitions, 3449 flow [2023-01-28 04:23:17,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 103.77142857142857) internal successors, (3632), 35 states have internal predecessors, (3632), 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 04:23:17,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:17,073 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 04:23:17,081 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 04:23:17,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:17,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:17,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1668641668, now seen corresponding path program 1 times [2023-01-28 04:23:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499804104] [2023-01-28 04:23:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:17,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499804104] [2023-01-28 04:23:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499804104] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:17,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763196802] [2023-01-28 04:23:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:17,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:17,373 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 04:23:17,375 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 04:23:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:17,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:23:17,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:17,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:23:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:17,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763196802] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:17,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:17,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 04:23:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753558089] [2023-01-28 04:23:17,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:17,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:23:17,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:23:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:23:17,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 400 [2023-01-28 04:23:17,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 340 transitions, 3449 flow. Second operand has 12 states, 12 states have (on average 152.66666666666666) internal successors, (1832), 12 states have internal predecessors, (1832), 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 04:23:17,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:17,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 400 [2023-01-28 04:23:17,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:17,918 INFO L130 PetriNetUnfolder]: 1036/1768 cut-off events. [2023-01-28 04:23:17,919 INFO L131 PetriNetUnfolder]: For 21727/21833 co-relation queries the response was YES. [2023-01-28 04:23:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 1768 events. 1036/1768 cut-off events. For 21727/21833 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8890 event pairs, 244 based on Foata normal form. 212/1825 useless extension candidates. Maximal degree in co-relation 11309. Up to 1016 conditions per place. [2023-01-28 04:23:17,935 INFO L137 encePairwiseOnDemand]: 395/400 looper letters, 130 selfloop transitions, 6 changer transitions 70/209 dead transitions. [2023-01-28 04:23:17,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 209 transitions, 2493 flow [2023-01-28 04:23:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:23:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:23:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 949 transitions. [2023-01-28 04:23:17,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954166666666667 [2023-01-28 04:23:17,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 949 transitions. [2023-01-28 04:23:17,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 949 transitions. [2023-01-28 04:23:17,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:17,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 949 transitions. [2023-01-28 04:23:17,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.16666666666666) internal successors, (949), 6 states have internal predecessors, (949), 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 04:23:17,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 400.0) internal successors, (2800), 7 states have internal predecessors, (2800), 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 04:23:17,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 400.0) internal successors, (2800), 7 states have internal predecessors, (2800), 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 04:23:17,939 INFO L175 Difference]: Start difference. First operand has 189 places, 340 transitions, 3449 flow. Second operand 6 states and 949 transitions. [2023-01-28 04:23:17,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 209 transitions, 2493 flow [2023-01-28 04:23:17,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 209 transitions, 2057 flow, removed 190 selfloop flow, removed 25 redundant places. [2023-01-28 04:23:17,982 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 988 flow [2023-01-28 04:23:17,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2023-01-28 04:23:17,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 104 predicate places. [2023-01-28 04:23:17,983 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 988 flow [2023-01-28 04:23:17,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 152.66666666666666) internal successors, (1832), 12 states have internal predecessors, (1832), 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 04:23:17,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:17,983 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:23:17,991 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 04:23:18,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:18,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:18,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1433880464, now seen corresponding path program 1 times [2023-01-28 04:23:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890641577] [2023-01-28 04:23:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:18,262 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 04:23:18,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:18,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890641577] [2023-01-28 04:23:18,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890641577] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:23:18,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:23:18,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:23:18,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489936634] [2023-01-28 04:23:18,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:23:18,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:23:18,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:23:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:23:18,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 400 [2023-01-28 04:23:18,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 988 flow. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 04:23:18,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:18,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 400 [2023-01-28 04:23:18,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:18,527 INFO L130 PetriNetUnfolder]: 1397/2286 cut-off events. [2023-01-28 04:23:18,527 INFO L131 PetriNetUnfolder]: For 11367/11411 co-relation queries the response was YES. [2023-01-28 04:23:18,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 2286 events. 1397/2286 cut-off events. For 11367/11411 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11241 event pairs, 167 based on Foata normal form. 128/2091 useless extension candidates. Maximal degree in co-relation 11998. Up to 894 conditions per place. [2023-01-28 04:23:18,542 INFO L137 encePairwiseOnDemand]: 395/400 looper letters, 130 selfloop transitions, 24 changer transitions 9/166 dead transitions. [2023-01-28 04:23:18,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 166 transitions, 1714 flow [2023-01-28 04:23:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:23:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:23:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-01-28 04:23:18,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2023-01-28 04:23:18,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-01-28 04:23:18,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-01-28 04:23:18,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:18,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-01-28 04:23:18,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 04:23:18,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 400.0) internal successors, (2000), 5 states have internal predecessors, (2000), 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 04:23:18,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 400.0) internal successors, (2000), 5 states have internal predecessors, (2000), 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 04:23:18,546 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 988 flow. Second operand 4 states and 744 transitions. [2023-01-28 04:23:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 166 transitions, 1714 flow [2023-01-28 04:23:18,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1593 flow, removed 53 selfloop flow, removed 14 redundant places. [2023-01-28 04:23:18,574 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1056 flow [2023-01-28 04:23:18,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1056, PETRI_PLACES=110, PETRI_TRANSITIONS=119} [2023-01-28 04:23:18,575 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2023-01-28 04:23:18,575 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1056 flow [2023-01-28 04:23:18,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 04:23:18,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:18,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:23:18,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 04:23:18,576 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:18,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1130956623, now seen corresponding path program 8 times [2023-01-28 04:23:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091065533] [2023-01-28 04:23:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:18,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:23:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:20,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091065533] [2023-01-28 04:23:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091065533] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456829284] [2023-01-28 04:23:20,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:23:20,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:20,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:20,817 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 04:23:20,819 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 04:23:20,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 04:23:20,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:23:20,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 04:23:20,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:21,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:23:21,173 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:23:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:23:21,222 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:23:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:23:21,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:23:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456829284] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:23:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:23:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 20 [2023-01-28 04:23:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279345827] [2023-01-28 04:23:21,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:23:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:23:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:23:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:23:21,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 400 [2023-01-28 04:23:21,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 1056 flow. Second operand has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 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 04:23:21,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:21,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 400 [2023-01-28 04:23:21,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:21,820 INFO L130 PetriNetUnfolder]: 1222/2019 cut-off events. [2023-01-28 04:23:21,820 INFO L131 PetriNetUnfolder]: For 10953/10953 co-relation queries the response was YES. [2023-01-28 04:23:21,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11097 conditions, 2019 events. 1222/2019 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9575 event pairs, 131 based on Foata normal form. 27/1747 useless extension candidates. Maximal degree in co-relation 11058. Up to 1675 conditions per place. [2023-01-28 04:23:21,838 INFO L137 encePairwiseOnDemand]: 389/400 looper letters, 92 selfloop transitions, 12 changer transitions 46/152 dead transitions. [2023-01-28 04:23:21,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 152 transitions, 1617 flow [2023-01-28 04:23:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:23:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:23:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1129 transitions. [2023-01-28 04:23:21,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528125 [2023-01-28 04:23:21,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1129 transitions. [2023-01-28 04:23:21,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1129 transitions. [2023-01-28 04:23:21,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:21,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1129 transitions. [2023-01-28 04:23:21,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.125) internal successors, (1129), 8 states have internal predecessors, (1129), 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 04:23:21,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:23:21,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 400.0) internal successors, (3600), 9 states have internal predecessors, (3600), 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 04:23:21,843 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1056 flow. Second operand 8 states and 1129 transitions. [2023-01-28 04:23:21,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 152 transitions, 1617 flow [2023-01-28 04:23:21,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 1579 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 04:23:21,862 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 842 flow [2023-01-28 04:23:21,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=842, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-01-28 04:23:21,864 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2023-01-28 04:23:21,864 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 842 flow [2023-01-28 04:23:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 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 04:23:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:21,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:23:21,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 04:23:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 04:23:22,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:22,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:22,070 INFO L85 PathProgramCache]: Analyzing trace with hash 240373459, now seen corresponding path program 2 times [2023-01-28 04:23:22,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856735135] [2023-01-28 04:23:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:22,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856735135] [2023-01-28 04:23:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856735135] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266072861] [2023-01-28 04:23:22,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:23:22,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:22,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:23:22,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 04:23:22,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:23:22,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:23:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 04:23:22,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:22,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:23:22,966 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 04:23:22,967 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 24 treesize of output 11 [2023-01-28 04:23:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266072861] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:23,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-01-28 04:23:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046592864] [2023-01-28 04:23:23,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:23:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:23:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:23:23,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 400 [2023-01-28 04:23:23,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 842 flow. Second operand has 23 states, 23 states have (on average 131.2608695652174) internal successors, (3019), 23 states have internal predecessors, (3019), 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 04:23:23,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:23,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 400 [2023-01-28 04:23:23,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:25,346 INFO L130 PetriNetUnfolder]: 7397/10808 cut-off events. [2023-01-28 04:23:25,346 INFO L131 PetriNetUnfolder]: For 55563/55563 co-relation queries the response was YES. [2023-01-28 04:23:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59435 conditions, 10808 events. 7397/10808 cut-off events. For 55563/55563 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 58903 event pairs, 280 based on Foata normal form. 733/9309 useless extension candidates. Maximal degree in co-relation 59395. Up to 3437 conditions per place. [2023-01-28 04:23:25,436 INFO L137 encePairwiseOnDemand]: 390/400 looper letters, 500 selfloop transitions, 197 changer transitions 12/711 dead transitions. [2023-01-28 04:23:25,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 711 transitions, 7845 flow [2023-01-28 04:23:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 04:23:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 04:23:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3760 transitions. [2023-01-28 04:23:25,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2023-01-28 04:23:25,441 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3760 transitions. [2023-01-28 04:23:25,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3760 transitions. [2023-01-28 04:23:25,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:25,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3760 transitions. [2023-01-28 04:23:25,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 139.25925925925927) internal successors, (3760), 27 states have internal predecessors, (3760), 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 04:23:25,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 400.0) internal successors, (11200), 28 states have internal predecessors, (11200), 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 04:23:25,455 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 400.0) internal successors, (11200), 28 states have internal predecessors, (11200), 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 04:23:25,455 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 842 flow. Second operand 27 states and 3760 transitions. [2023-01-28 04:23:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 711 transitions, 7845 flow [2023-01-28 04:23:25,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 711 transitions, 7353 flow, removed 219 selfloop flow, removed 15 redundant places. [2023-01-28 04:23:25,637 INFO L231 Difference]: Finished difference. Result has 125 places, 313 transitions, 3580 flow [2023-01-28 04:23:25,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3580, PETRI_PLACES=125, PETRI_TRANSITIONS=313} [2023-01-28 04:23:25,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2023-01-28 04:23:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 313 transitions, 3580 flow [2023-01-28 04:23:25,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 131.2608695652174) internal successors, (3019), 23 states have internal predecessors, (3019), 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 04:23:25,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:25,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:23:25,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 04:23:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 04:23:25,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:25,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1214562967, now seen corresponding path program 3 times [2023-01-28 04:23:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988304256] [2023-01-28 04:23:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988304256] [2023-01-28 04:23:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988304256] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563052328] [2023-01-28 04:23:26,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:23:26,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:26,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:26,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:23:26,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 04:23:26,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:23:26,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:23:26,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 04:23:26,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:26,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:23:26,755 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:23:26,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-01-28 04:23:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:26,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:23:27,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:23:27,008 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 42 treesize of output 34 [2023-01-28 04:23:27,016 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 9 treesize of output 3 [2023-01-28 04:23:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563052328] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:27,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:27,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-01-28 04:23:27,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568491375] [2023-01-28 04:23:27,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 04:23:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 04:23:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-01-28 04:23:27,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 400 [2023-01-28 04:23:27,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 313 transitions, 3580 flow. Second operand has 25 states, 25 states have (on average 127.28) internal successors, (3182), 25 states have internal predecessors, (3182), 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 04:23:27,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:27,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 400 [2023-01-28 04:23:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:37,432 INFO L130 PetriNetUnfolder]: 16333/24545 cut-off events. [2023-01-28 04:23:37,432 INFO L131 PetriNetUnfolder]: For 310972/310972 co-relation queries the response was YES. [2023-01-28 04:23:37,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169071 conditions, 24545 events. 16333/24545 cut-off events. For 310972/310972 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 161936 event pairs, 959 based on Foata normal form. 376/22525 useless extension candidates. Maximal degree in co-relation 169024. Up to 8135 conditions per place. [2023-01-28 04:23:37,666 INFO L137 encePairwiseOnDemand]: 389/400 looper letters, 634 selfloop transitions, 552 changer transitions 19/1207 dead transitions. [2023-01-28 04:23:37,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1207 transitions, 16170 flow [2023-01-28 04:23:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 04:23:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 04:23:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4350 transitions. [2023-01-28 04:23:37,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2023-01-28 04:23:37,670 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4350 transitions. [2023-01-28 04:23:37,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4350 transitions. [2023-01-28 04:23:37,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:37,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4350 transitions. [2023-01-28 04:23:37,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 135.9375) internal successors, (4350), 32 states have internal predecessors, (4350), 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 04:23:37,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 400.0) internal successors, (13200), 33 states have internal predecessors, (13200), 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 04:23:37,680 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 400.0) internal successors, (13200), 33 states have internal predecessors, (13200), 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 04:23:37,680 INFO L175 Difference]: Start difference. First operand has 125 places, 313 transitions, 3580 flow. Second operand 32 states and 4350 transitions. [2023-01-28 04:23:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1207 transitions, 16170 flow [2023-01-28 04:23:39,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1207 transitions, 15094 flow, removed 533 selfloop flow, removed 5 redundant places. [2023-01-28 04:23:39,323 INFO L231 Difference]: Finished difference. Result has 171 places, 755 transitions, 11019 flow [2023-01-28 04:23:39,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=11019, PETRI_PLACES=171, PETRI_TRANSITIONS=755} [2023-01-28 04:23:39,324 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2023-01-28 04:23:39,324 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 755 transitions, 11019 flow [2023-01-28 04:23:39,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 127.28) internal successors, (3182), 25 states have internal predecessors, (3182), 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 04:23:39,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:39,325 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 04:23:39,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 04:23:39,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 04:23:39,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:39,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash -15937028, now seen corresponding path program 4 times [2023-01-28 04:23:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920235625] [2023-01-28 04:23:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:40,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920235625] [2023-01-28 04:23:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920235625] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542288017] [2023-01-28 04:23:40,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:23:40,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:40,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:40,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:23:40,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 04:23:40,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:23:40,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:23:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:23:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 04:23:40,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:23:40,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542288017] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:23:40,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:23:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-01-28 04:23:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574706478] [2023-01-28 04:23:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:23:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:23:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:23:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:23:40,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 400 [2023-01-28 04:23:40,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 755 transitions, 11019 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:23:40,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:40,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 400 [2023-01-28 04:23:40,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:46,277 INFO L130 PetriNetUnfolder]: 16859/25236 cut-off events. [2023-01-28 04:23:46,278 INFO L131 PetriNetUnfolder]: For 509232/509232 co-relation queries the response was YES. [2023-01-28 04:23:46,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197507 conditions, 25236 events. 16859/25236 cut-off events. For 509232/509232 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 165542 event pairs, 2832 based on Foata normal form. 18/23292 useless extension candidates. Maximal degree in co-relation 197442. Up to 22502 conditions per place. [2023-01-28 04:23:46,655 INFO L137 encePairwiseOnDemand]: 393/400 looper letters, 779 selfloop transitions, 100 changer transitions 0/881 dead transitions. [2023-01-28 04:23:46,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 881 transitions, 14499 flow [2023-01-28 04:23:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:23:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:23:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2023-01-28 04:23:46,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418 [2023-01-28 04:23:46,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2023-01-28 04:23:46,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2023-01-28 04:23:46,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:46,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2023-01-28 04:23:46,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 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 04:23:46,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 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 04:23:46,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 400.0) internal successors, (2400), 6 states have internal predecessors, (2400), 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 04:23:46,661 INFO L175 Difference]: Start difference. First operand has 171 places, 755 transitions, 11019 flow. Second operand 5 states and 836 transitions. [2023-01-28 04:23:46,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 881 transitions, 14499 flow [2023-01-28 04:23:51,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 881 transitions, 13412 flow, removed 540 selfloop flow, removed 4 redundant places. [2023-01-28 04:23:51,642 INFO L231 Difference]: Finished difference. Result has 170 places, 779 transitions, 10692 flow [2023-01-28 04:23:51,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=9974, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10692, PETRI_PLACES=170, PETRI_TRANSITIONS=779} [2023-01-28 04:23:51,643 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2023-01-28 04:23:51,643 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 779 transitions, 10692 flow [2023-01-28 04:23:51,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:23:51,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:23:51,643 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 04:23:51,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 04:23:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 04:23:51,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:23:51,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:23:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash 33418138, now seen corresponding path program 5 times [2023-01-28 04:23:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:23:51,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809405589] [2023-01-28 04:23:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:23:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:23:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:23:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:23:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:23:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809405589] [2023-01-28 04:23:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809405589] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:23:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660065704] [2023-01-28 04:23:52,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:23:52,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:23:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:23:52,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:23:52,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 04:23:52,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:23:52,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:23:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 04:23:52,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:23:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:23:52,557 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:23:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:23:52,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:23:52,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:23:52,645 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 42 treesize of output 34 [2023-01-28 04:23:52,647 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 9 treesize of output 3 [2023-01-28 04:23:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 04:23:52,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660065704] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:23:52,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:23:52,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2023-01-28 04:23:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934235878] [2023-01-28 04:23:52,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:23:52,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 04:23:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:23:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 04:23:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=505, Unknown=7, NotChecked=0, Total=600 [2023-01-28 04:23:52,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 400 [2023-01-28 04:23:52,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 779 transitions, 10692 flow. Second operand has 25 states, 25 states have (on average 119.36) internal successors, (2984), 25 states have internal predecessors, (2984), 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 04:23:52,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:23:52,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 400 [2023-01-28 04:23:52,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:23:58,448 INFO L130 PetriNetUnfolder]: 17028/25474 cut-off events. [2023-01-28 04:23:58,449 INFO L131 PetriNetUnfolder]: For 462757/462757 co-relation queries the response was YES. [2023-01-28 04:23:58,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190860 conditions, 25474 events. 17028/25474 cut-off events. For 462757/462757 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 166834 event pairs, 1332 based on Foata normal form. 20/23536 useless extension candidates. Maximal degree in co-relation 190794. Up to 8451 conditions per place. [2023-01-28 04:23:58,764 INFO L137 encePairwiseOnDemand]: 390/400 looper letters, 683 selfloop transitions, 728 changer transitions 0/1412 dead transitions. [2023-01-28 04:23:58,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1412 transitions, 22436 flow [2023-01-28 04:23:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:23:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:23:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1981 transitions. [2023-01-28 04:23:58,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30953125 [2023-01-28 04:23:58,775 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1981 transitions. [2023-01-28 04:23:58,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1981 transitions. [2023-01-28 04:23:58,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:23:58,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1981 transitions. [2023-01-28 04:23:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.8125) internal successors, (1981), 16 states have internal predecessors, (1981), 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 04:23:58,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 400.0) internal successors, (6800), 17 states have internal predecessors, (6800), 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 04:23:58,781 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 400.0) internal successors, (6800), 17 states have internal predecessors, (6800), 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 04:23:58,781 INFO L175 Difference]: Start difference. First operand has 170 places, 779 transitions, 10692 flow. Second operand 16 states and 1981 transitions. [2023-01-28 04:23:58,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1412 transitions, 22436 flow [2023-01-28 04:24:01,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1412 transitions, 21991 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-28 04:24:01,973 INFO L231 Difference]: Finished difference. Result has 185 places, 1091 transitions, 17887 flow [2023-01-28 04:24:01,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=10419, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17887, PETRI_PLACES=185, PETRI_TRANSITIONS=1091} [2023-01-28 04:24:01,979 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2023-01-28 04:24:01,979 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 1091 transitions, 17887 flow [2023-01-28 04:24:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 119.36) internal successors, (2984), 25 states have internal predecessors, (2984), 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 04:24:01,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:24:01,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:24:01,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 04:24:02,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 04:24:02,185 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:24:02,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:24:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1145804143, now seen corresponding path program 6 times [2023-01-28 04:24:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:24:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073721472] [2023-01-28 04:24:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:24:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:24:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:24:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:24:02,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:24:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073721472] [2023-01-28 04:24:02,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073721472] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:24:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759255839] [2023-01-28 04:24:02,744 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:24:02,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:24:02,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:24:02,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:24:02,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 04:24:02,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:24:02,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:24:02,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 04:24:02,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:24:03,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:24:03,096 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:24:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:24:03,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:24:03,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:24:03,237 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 42 treesize of output 34 [2023-01-28 04:24:03,245 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 9 treesize of output 3 [2023-01-28 04:24:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:24:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759255839] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:24:03,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:24:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-01-28 04:24:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949468575] [2023-01-28 04:24:03,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:24:03,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 04:24:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:24:03,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 04:24:03,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=504, Unknown=3, NotChecked=0, Total=600 [2023-01-28 04:24:03,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 400 [2023-01-28 04:24:03,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 1091 transitions, 17887 flow. Second operand has 25 states, 25 states have (on average 127.4) internal successors, (3185), 25 states have internal predecessors, (3185), 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 04:24:03,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:24:03,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 400 [2023-01-28 04:24:03,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:24:16,151 INFO L130 PetriNetUnfolder]: 29657/44272 cut-off events. [2023-01-28 04:24:16,151 INFO L131 PetriNetUnfolder]: For 959755/959755 co-relation queries the response was YES. [2023-01-28 04:24:16,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356280 conditions, 44272 events. 29657/44272 cut-off events. For 959755/959755 co-relation queries the response was YES. Maximal size of possible extension queue 2168. Compared 315029 event pairs, 2212 based on Foata normal form. 622/41557 useless extension candidates. Maximal degree in co-relation 356212. Up to 14470 conditions per place. [2023-01-28 04:24:16,890 INFO L137 encePairwiseOnDemand]: 390/400 looper letters, 1403 selfloop transitions, 1200 changer transitions 3/2608 dead transitions. [2023-01-28 04:24:16,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 2608 transitions, 47845 flow [2023-01-28 04:24:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 04:24:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 04:24:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3637 transitions. [2023-01-28 04:24:16,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33675925925925926 [2023-01-28 04:24:16,894 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3637 transitions. [2023-01-28 04:24:16,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3637 transitions. [2023-01-28 04:24:16,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:24:16,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3637 transitions. [2023-01-28 04:24:16,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 134.7037037037037) internal successors, (3637), 27 states have internal predecessors, (3637), 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 04:24:16,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 400.0) internal successors, (11200), 28 states have internal predecessors, (11200), 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 04:24:16,924 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 400.0) internal successors, (11200), 28 states have internal predecessors, (11200), 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 04:24:16,924 INFO L175 Difference]: Start difference. First operand has 185 places, 1091 transitions, 17887 flow. Second operand 27 states and 3637 transitions. [2023-01-28 04:24:16,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 2608 transitions, 47845 flow [2023-01-28 04:24:27,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 2608 transitions, 46853 flow, removed 480 selfloop flow, removed 6 redundant places. [2023-01-28 04:24:27,654 INFO L231 Difference]: Finished difference. Result has 221 places, 1826 transitions, 35751 flow [2023-01-28 04:24:27,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=17487, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=35751, PETRI_PLACES=221, PETRI_TRANSITIONS=1826} [2023-01-28 04:24:27,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2023-01-28 04:24:27,655 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 1826 transitions, 35751 flow [2023-01-28 04:24:27,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 127.4) internal successors, (3185), 25 states have internal predecessors, (3185), 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 04:24:27,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:24:27,656 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 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 04:24:27,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 04:24:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 04:24:27,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:24:27,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:24:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1449519811, now seen corresponding path program 9 times [2023-01-28 04:24:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:24:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823857281] [2023-01-28 04:24:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:24:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:24:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:24:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:24:29,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:24:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823857281] [2023-01-28 04:24:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823857281] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:24:29,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906191045] [2023-01-28 04:24:29,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:24:29,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:24:29,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:24:29,982 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:24:29,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 04:24:30,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 04:24:30,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:24:30,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 04:24:30,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:24:30,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:24:30,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 04:24:30,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:24:30,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:24:30,529 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:24:30,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2023-01-28 04:24:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 04:24:30,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:24:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906191045] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:24:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:24:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 23 [2023-01-28 04:24:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464925710] [2023-01-28 04:24:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:24:30,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 04:24:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:24:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 04:24:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2023-01-28 04:24:30,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 400 [2023-01-28 04:24:30,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1826 transitions, 35751 flow. Second operand has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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 04:24:30,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:24:30,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 400 [2023-01-28 04:24:30,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:24:46,027 INFO L130 PetriNetUnfolder]: 29721/44308 cut-off events. [2023-01-28 04:24:46,027 INFO L131 PetriNetUnfolder]: For 1018982/1018982 co-relation queries the response was YES. [2023-01-28 04:24:46,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382330 conditions, 44308 events. 29721/44308 cut-off events. For 1018982/1018982 co-relation queries the response was YES. Maximal size of possible extension queue 2178. Compared 314406 event pairs, 5905 based on Foata normal form. 7/40969 useless extension candidates. Maximal degree in co-relation 382246. Up to 43836 conditions per place. [2023-01-28 04:24:46,705 INFO L137 encePairwiseOnDemand]: 392/400 looper letters, 1812 selfloop transitions, 10 changer transitions 25/1849 dead transitions. [2023-01-28 04:24:46,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1849 transitions, 39570 flow [2023-01-28 04:24:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:24:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:24:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2023-01-28 04:24:46,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432142857142857 [2023-01-28 04:24:46,706 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2023-01-28 04:24:46,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2023-01-28 04:24:46,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:24:46,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2023-01-28 04:24:46,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 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 04:24:46,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 400.0) internal successors, (3200), 8 states have internal predecessors, (3200), 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 04:24:46,709 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 400.0) internal successors, (3200), 8 states have internal predecessors, (3200), 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 04:24:46,709 INFO L175 Difference]: Start difference. First operand has 221 places, 1826 transitions, 35751 flow. Second operand 7 states and 961 transitions. [2023-01-28 04:24:46,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1849 transitions, 39570 flow [2023-01-28 04:25:01,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1849 transitions, 39004 flow, removed 269 selfloop flow, removed 7 redundant places. [2023-01-28 04:25:01,717 INFO L231 Difference]: Finished difference. Result has 222 places, 1820 transitions, 35137 flow [2023-01-28 04:25:01,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=35185, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1816, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35137, PETRI_PLACES=222, PETRI_TRANSITIONS=1820} [2023-01-28 04:25:01,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2023-01-28 04:25:01,718 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 1820 transitions, 35137 flow [2023-01-28 04:25:01,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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 04:25:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:25:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:25:01,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 04:25:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:25:01,924 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:25:01,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:25:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1135414791, now seen corresponding path program 7 times [2023-01-28 04:25:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:25:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692130603] [2023-01-28 04:25:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:25:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:25:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:25:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:25:02,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:25:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692130603] [2023-01-28 04:25:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692130603] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:25:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19791556] [2023-01-28 04:25:02,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:25:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:25:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:25:02,479 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:25:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 04:25:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:25:02,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 04:25:02,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:25:02,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:25:02,857 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:25:02,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:25:02,897 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 04:25:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:25:02,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:25:02,975 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1005 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1005) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) is different from false [2023-01-28 04:25:02,981 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1005 (Array Int Int)) (v_ArrVal_1004 (Array Int Int))) (< 0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1005) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) is different from false [2023-01-28 04:25:03,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:25:03,022 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 158 treesize of output 142 [2023-01-28 04:25:03,026 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 27 treesize of output 21 [2023-01-28 04:25:03,041 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 28 treesize of output 16 [2023-01-28 04:25:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:25:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19791556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:25:03,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:25:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-01-28 04:25:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065739814] [2023-01-28 04:25:03,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:25:03,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:25:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:25:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:25:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=745, Unknown=2, NotChecked=114, Total=992 [2023-01-28 04:25:03,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 400 [2023-01-28 04:25:03,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1820 transitions, 35137 flow. Second operand has 32 states, 32 states have (on average 115.90625) internal successors, (3709), 32 states have internal predecessors, (3709), 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 04:25:03,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:25:03,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 400 [2023-01-28 04:25:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:25:06,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:25:08,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:25:28,620 INFO L130 PetriNetUnfolder]: 36949/55606 cut-off events. [2023-01-28 04:25:28,620 INFO L131 PetriNetUnfolder]: For 1337093/1337093 co-relation queries the response was YES. [2023-01-28 04:25:29,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474700 conditions, 55606 events. 36949/55606 cut-off events. For 1337093/1337093 co-relation queries the response was YES. Maximal size of possible extension queue 2781. Compared 414375 event pairs, 2626 based on Foata normal form. 333/51682 useless extension candidates. Maximal degree in co-relation 474613. Up to 18504 conditions per place. [2023-01-28 04:25:29,996 INFO L137 encePairwiseOnDemand]: 381/400 looper letters, 1390 selfloop transitions, 1895 changer transitions 4/3290 dead transitions. [2023-01-28 04:25:29,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 3290 transitions, 66943 flow [2023-01-28 04:25:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 04:25:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 04:25:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4428 transitions. [2023-01-28 04:25:30,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3075 [2023-01-28 04:25:30,001 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4428 transitions. [2023-01-28 04:25:30,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4428 transitions. [2023-01-28 04:25:30,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:25:30,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4428 transitions. [2023-01-28 04:25:30,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 123.0) internal successors, (4428), 36 states have internal predecessors, (4428), 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 04:25:30,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 400.0) internal successors, (14800), 37 states have internal predecessors, (14800), 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 04:25:30,016 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 400.0) internal successors, (14800), 37 states have internal predecessors, (14800), 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 04:25:30,016 INFO L175 Difference]: Start difference. First operand has 222 places, 1820 transitions, 35137 flow. Second operand 36 states and 4428 transitions. [2023-01-28 04:25:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 3290 transitions, 66943 flow [2023-01-28 04:25:51,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 3290 transitions, 66293 flow, removed 315 selfloop flow, removed 7 redundant places. [2023-01-28 04:25:51,970 INFO L231 Difference]: Finished difference. Result has 264 places, 2558 transitions, 57600 flow [2023-01-28 04:25:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=34787, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=57600, PETRI_PLACES=264, PETRI_TRANSITIONS=2558} [2023-01-28 04:25:51,972 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 232 predicate places. [2023-01-28 04:25:51,972 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 2558 transitions, 57600 flow [2023-01-28 04:25:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 115.90625) internal successors, (3709), 32 states have internal predecessors, (3709), 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 04:25:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:25:51,972 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:25:51,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 04:25:52,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:25:52,175 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:25:52,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:25:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 66921485, now seen corresponding path program 1 times [2023-01-28 04:25:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:25:52,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163181284] [2023-01-28 04:25:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:25:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:25:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:25:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:25:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:25:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163181284] [2023-01-28 04:25:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163181284] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:25:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903252099] [2023-01-28 04:25:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:25:52,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:25:52,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:25:52,305 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:25:52,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:25:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:25:52,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:25:52,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:25:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:25:52,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:25:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:25:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903252099] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:25:52,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:25:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 04:25:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213887293] [2023-01-28 04:25:52,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:25:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:25:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:25:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:25:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:25:52,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 400 [2023-01-28 04:25:52,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 2558 transitions, 57600 flow. Second operand has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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 04:25:52,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:25:52,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 400 [2023-01-28 04:25:52,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:26:29,160 INFO L130 PetriNetUnfolder]: 46005/70480 cut-off events. [2023-01-28 04:26:29,160 INFO L131 PetriNetUnfolder]: For 2372376/2372491 co-relation queries the response was YES. [2023-01-28 04:26:30,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703536 conditions, 70480 events. 46005/70480 cut-off events. For 2372376/2372491 co-relation queries the response was YES. Maximal size of possible extension queue 3702. Compared 562796 event pairs, 8559 based on Foata normal form. 3034/67911 useless extension candidates. Maximal degree in co-relation 703433. Up to 51924 conditions per place. [2023-01-28 04:26:31,006 INFO L137 encePairwiseOnDemand]: 393/400 looper letters, 2389 selfloop transitions, 15 changer transitions 1343/3766 dead transitions. [2023-01-28 04:26:31,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 3766 transitions, 91482 flow [2023-01-28 04:26:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:26:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:26:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1399 transitions. [2023-01-28 04:26:31,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38861111111111113 [2023-01-28 04:26:31,010 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1399 transitions. [2023-01-28 04:26:31,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1399 transitions. [2023-01-28 04:26:31,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:26:31,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1399 transitions. [2023-01-28 04:26:31,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.44444444444446) internal successors, (1399), 9 states have internal predecessors, (1399), 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 04:26:31,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 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 04:26:31,026 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 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 04:26:31,026 INFO L175 Difference]: Start difference. First operand has 264 places, 2558 transitions, 57600 flow. Second operand 9 states and 1399 transitions. [2023-01-28 04:26:31,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 3766 transitions, 91482 flow Received shutdown request... [2023-01-28 04:26:49,166 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:26:49,183 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:26:49,187 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 04:26:49,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 04:26:49,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:26:49,384 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 04:26:49,385 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:26:49,386 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:26:49,386 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:26:49,386 INFO L445 BasicCegarLoop]: Path program histogram: [9, 7, 1, 1, 1, 1, 1] [2023-01-28 04:26:49,388 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:26:49,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:26:49,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:26:49 BasicIcfg [2023-01-28 04:26:49,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:26:49,391 INFO L158 Benchmark]: Toolchain (without parser) took 838476.95ms. Allocated memory was 385.9MB in the beginning and 9.5GB in the end (delta: 9.1GB). Free memory was 346.3MB in the beginning and 7.5GB in the end (delta: -7.2GB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. [2023-01-28 04:26:49,391 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:26:49,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.45ms. Allocated memory is still 385.9MB. Free memory was 345.9MB in the beginning and 333.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:26:49,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.74ms. Allocated memory is still 385.9MB. Free memory was 333.9MB in the beginning and 331.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:26:49,392 INFO L158 Benchmark]: Boogie Preprocessor took 36.37ms. Allocated memory is still 385.9MB. Free memory was 331.4MB in the beginning and 329.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:26:49,392 INFO L158 Benchmark]: RCFGBuilder took 576.96ms. Allocated memory is still 385.9MB. Free memory was 329.3MB in the beginning and 295.4MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-28 04:26:49,392 INFO L158 Benchmark]: TraceAbstraction took 837569.44ms. Allocated memory was 385.9MB in the beginning and 9.5GB in the end (delta: 9.1GB). Free memory was 294.8MB in the beginning and 7.5GB in the end (delta: -7.2GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. [2023-01-28 04:26:49,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 242.45ms. Allocated memory is still 385.9MB. Free memory was 345.9MB in the beginning and 333.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.74ms. Allocated memory is still 385.9MB. Free memory was 333.9MB in the beginning and 331.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.37ms. Allocated memory is still 385.9MB. Free memory was 331.4MB in the beginning and 329.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 576.96ms. Allocated memory is still 385.9MB. Free memory was 329.3MB in the beginning and 295.4MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 837569.44ms. Allocated memory was 385.9MB in the beginning and 9.5GB in the end (delta: 9.1GB). Free memory was 294.8MB in the beginning and 7.5GB in the end (delta: -7.2GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 180 PlacesBefore, 32 PlacesAfterwards, 188 TransitionsBefore, 28 TransitionsAfterwards, 1456 CoEnabledTransitionPairs, 7 FixpointIterations, 122 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 12 ConcurrentYvCompositions, 12 ChoiceCompositions, 199 TotalNumberOfCompositions, 2169 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1643, independent: 1586, independent conditional: 0, independent unconditional: 1586, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 838, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1643, independent: 768, independent conditional: 0, independent unconditional: 768, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 838, unknown conditional: 0, unknown unconditional: 838] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, 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: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 214 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.5s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 713.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 450 mSolverCounterUnknown, 3012 SdHoareTripleChecker+Valid, 97.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3012 mSDsluCounter, 528 SdHoareTripleChecker+Invalid, 95.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2158 IncrementalHoareTripleChecker+Unchecked, 484 mSDsCounter, 587 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14001 IncrementalHoareTripleChecker+Invalid, 17196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 587 mSolverCounterUnsat, 44 mSDtfsCounter, 14001 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1023 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 546 ConstructedPredicates, 7 IntricatePredicates, 4 DeprecatedPredicates, 4610 ImplicationChecksByTransitivity, 450.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57600occurred in iteration=20, InterpolantAutomatonStates: 335, 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: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 112.2s InterpolantComputationTime, 940 NumberOfCodeBlocks, 924 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1152 ConstructedInterpolants, 84 QuantifiedInterpolants, 32320 SizeOfPredicates, 232 NumberOfNonLiveVariables, 4926 ConjunctsInSsa, 571 ConjunctsInUnsatCore, 47 InterpolantComputations, 11 PerfectInterpolantSequences, 98/224 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